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    • Home 2 AC Powered EV Charger
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      • Back
      • Diode and RC Supressors
    • Automotive Fuses
    • Automotive Current Sensors
    • Meters for Electric Vehicle Chargers
    • E-Bike Technology
    • Split Core Current Transformers
    • Split Core AC Current Sensors with Process Outputs
    • DC Current Sensors with Process Outputs
    • Hall Effect Current Sensors
    • Hall Effect Current Sensors PCB Mount
    • Hall Effect Voltage Transducers
    • Din Rail Mount Energy Transducers
  • Process Control
    • Temperature/Humidity Controllers
      • Back
      • 48x24mm Panel Mount
      • 48x48mm Panel Mount
      • 48x96mm Panel Mount
      • 96x96mm Panel Mount
      • Dual Loop Temperature and Humidity
      • 98x48mm Indicators
      • Pattern Controllers
      • Limit Controllers
      • PWM Controllers
      • Refigeration Controllers
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      • Back
      • BSP Fittings and TC Cable
      • RTD's
      • Thermocouples
      • Bimetal Switches
      • Air Temp & Humidity Sensors
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      • Solid Core AC Current Transformers with Process Outputs
      • Split Core AC Current Transformers with Process Outputs
      • DC Current Sensors with Process Outputs
    • Motors & Motor Control
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      • Motor Protection Breakers
      • Motors, Alternators, Starter Motors
      • Speed Relays, Encoders, PWM Contactors
      • Din Rail Mount Contactors
    • Programmable Logic Controllers (PLC)
    • HMI Touch Screens
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    • Mechanical Relays
    • Hour Meters
    • Microswitches
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    • Phase Angle Power Controllers
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      • Thyristor (SCR Based)
      • Solid State Relay (SSR) Based
    • Burst Fire Power Controllers
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      • Thyristor (SCR Based)
      • Solid State Relay (SSR) Based
    • Accessories/Spare parts and OEM Power Controller card sets
    • Pulse Transformers
    • Power Factor Controllers
    • PWM Controllers (HVAC)
  • Power Quality
    • EMC Filters
    • IEC Power Sockets & Plugs
      • Back
      • Sockets with Filter
      • Socktes and plugs without Filter
    • Power Factor Correction
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      • 3 Phase PFC Capacitors
      • Single Phase PFC Capacitors
      • MV Power Factor Capacitors
      • Capacitor Duty Contactors
      • SVG Modules & Smart Capacitor Banks
      • PFC Controllers
      • Power Factor Meters and Transducers
      • Detuned Reactors
    • Pulse Transformers
    • Chokes
    • Smart Sub Meters and Power Quality Analysers
    • Utility Scale Meters
  • Electrical Measurement
    • Hall Effect Current Sensors/Transducers
      • Back
      • Split Core AC Current Sensors Process Output
      • Solid Core AC Current Sensors with Process Outputs
      • DC Current Sensor with Process Outputs
      • Panel Mount
      • Busbar Mount
      • Surface Mount
      • PCB Mount
      • Automotive Sensors
      • LEM Accessories
    • Hall Effect Voltage Sensors/Transducers
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      • PCB Mount
      • Panel Mount
    • Current Transformers
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      • Solid Core
      • Split Core
      • Solid Core with Process Output
      • Split Core with Process Output
      • Core Balance CT's
    • Rogowski Coils (Rope CT's)
    • High Frequency 20Mhz or DC Current Sensors
    • High Precision Hall Effect Sensors
    • Clamp On Current Sensors
    • Signal Conditioners
    • Din Rail Mount Transducers
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      • Current
      • Voltage
      • Power
    • Digital Panel Meters
    • Synchronometers
    • kWh Meters
    • Utility Smart Meters, Tariff, ICG Meters
    • Power Quality Meters and Analysers
    • Moving Coil Meter
    • DC Current Shunts
  • Power Capacitors
    • Snubber Capacitors
    • Power Factor Correction
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      • Medium Voltage up to 22kV
      • Single Phase 525V
      • 3 Phase 525V
    • DC Link & Electrolytic Capacitors
    • 3 Phase 525V Power Factor Correction Capacitors
  • Power Semiconductors
    • Bridge Rectifiers
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      • Single Phase
      • Three Phase
    • Isolated Power Modules
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      • Dual Diode Modules
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      • Single Thyristor(SCR) Modules
      • Common Cathode Modules
    • Stud Mount Diodes and Thyristors(SCR)
      • Back
      • Metric Stud Diodes & Thyristors(SCR)
      • Imperial Diodes and Thyristors(SCR)
      • Flat Base Diode and Thyristor(SCR)
    • Capsule (PUK) Devices
      • Back
      • Diode Capsules
      • Thyristor(SCR) Capsules
    • Press Fit Diodes
    • IGBT
      • Back
      • IGBT Devices
      • IGBT Drivers
    • Other Welding & Generator Diodes
    • Silicon Carbide Modules
    • Discrete Components (limited)
    • Semiconductor Fuses
      • Back
      • BS88 Style Fuse Links
      • European NH Style Fuses
      • Cartridge Fuses & DIN Rail Holders
      • Fuse Kits for Gear Tray
      • Solar Fuses for DC or AC
  • Solid State Relays
    • AC Control Solid Sate Relays
    • DC Control Solid Sate Relays
    • AC Switching Solid State Relays
    • DC Switching Solid State Relays
    • Proportional Phase/Burst SSR
    • 3 Phase Solid State Relays
    • Solid State Relay Heatsink
    • 3 Phase Solid State Relays On Heatsink
    • Solid State Relay & Heatsink Assembled
      • Back
      • AC Load
      • DC Load
      • 3 Phase
    • PCB Mount
    • Slimline & Socket Din Rail Mount
    • Solid State Contactors
    • Cartridge Fuses up to 125 Amp
  • Contactors
    • AC/DC Contactors (IP67K)
      • Back
      • TVS Supression Diodes
    • DIN Rail Mount AC Contactors
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      • Auxiliary Contacts
      • Thermal Overload Relays
      • Diode and RC Supressors
    • Miniature Contactors
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      • Auxiliary Contacts
      • Thermal Overload Relays
      • Diode and RC Supressors
    • Installation Contactors
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      • Auxiliary Contacts & Terminal Covers
    • Capacitor Duty Contactors
    • MV and HV Contactors
    • Solid State Contactors
    • Motor Protection Switches
  • Relays
    • Monitoring Relays
    • Standard DIN Rail Mount Relays
    • Slimline Relays & Sockets
    • Bistable Relays
    • Time Relays
    • Earth Leakage Relays
    • Diode and RC Supressors
  • Energy Monitoring
    • DIN Rail Mount Transducers
      • Back
      • Current
      • Voltage
      • Power
    • kWh Meters
    • Current Transformers
    • Rogowski Coils (Rope CT's)
    • Monitoring Relays
    • Synchrometers
    • Wi-LEM Wireless Energy Monitoring
    • Ergo Energy Monitoring Software
    • Smart Sub-Meters and Power Quality Analysers
    • Battery Monitoring
    • Digital Panel Meter
    • Utility Smart Meters, Tariff, ICG Meters
  • Electrical Protection
    • Semiconductor Fuses
      • Back
      • BS88 Style Fuse Links
      • European NH Fuses
      • Cartridge Semiconductor Fuses/DIN Rail Holders
      • Fuse Kits for Gear Tray or Heatsink Mounting
      • Solar Fuses (New)
      • Automotive Power Fuses
    • Appliance & IEC Fuses
    • Appliance Thermal Circuit Breakers
    • Varistors (MOV)
    • Diode & RC Supressors
    • Surge Protection Devices
    • Snubber Capacitors
    • Earth Leakage Relays
    • Monitoring Relays
    • Mechanical Relays
    • Solar Fuses for DC or AC
    • Motor Protection Breakers
    • Residual Current Device (RCD)
    • Miniature Circuit Breakers (MCB)
    • DC Miniature Circuit Breakers (MCB)
    • RCBO's
  • Switches
    • Solar and Battery Switches
    • Momentary Switches
    • Metal Line Switches
    • Bistable Switches
    • Emergency Start Stop Buttons
    • Motor Protection Breaker
    • Low Voltage Disconnect Switches
    • DC Circuit Breakers
    • Appliance Circuit Breakers
    • Bimetal Thermal Switches
  • Heat Sink
    • Heatsink Extrusions
    • Cooling Fans
    • Heatsink for SSR's
    • Water Cooled
    • Natural Cooled
    • Fan Cooled
    • Clamps, Paste, Hardware
  • Stack Assemblies
    • Solid State Contactors
    • Bridge Rectifier Stacks
    • Water Cooled Stacks
    • High Voltage Diode Arrays
    • Welder/Charger Rectifier Stacks
    • Repair Accessories for Stacks
  • Test Equipment
    • High Precision Current Sensors
    • Precision Potentiometers
    • Power Semiconductor Test Equipment
    • Portable Meters & Power Quality Analysers
    • Clamp On Current Sensors
    • Synchrometers
    • High Frequency 20MHz or High DC Current Sensor
  • Low Voltage Switchgear
    • Motor Protection Switch
    • DC Circuit Breakers
    • DC Disconnect Switches
    • Metal Line Switches
    • Din Rail Mount Contactors
    • Standard Relays and Sockets
    • Bistable Relays
    • Slimline Relays and Sockets
    • Appliance Thermal Circuit Breakers
    • AC Disconnect Switches
    • Moulded Case Circuit Breakers (MCCB)
    • Miniature Circuit Breakers (MCB)
    • Residual Current Circuit Breakers (RCCB,RCD)
    • RCD with Circuit Breaker (RCBO)
    • Distribution Board Enclosures
    • Panel Indicators
    • Emergency Stop Buttons
    • Installation Contactors
    • RC and Transient Supressors
  • Appliance Connectors, Switches and Fuses
    • IEC Fuses
    • Fuse Holders
    • Micro Fuses (PCB)
    • Thermal Circuit Breakers & Rocker Switches
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    • Metal Line Switches
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All Departments
  • E-Mobility
    • Home 2 AC Powered EV Charger
    • AC & DC Sealed Contactors
      • Back
      • Diode and RC Supressors
    • Automotive Fuses
    • Automotive Current Sensors
    • Meters for Electric Vehicle Chargers
    • E-Bike Technology
    • Split Core Current Transformers
    • Split Core AC Current Sensors with Process Outputs
    • DC Current Sensors with Process Outputs
    • Hall Effect Current Sensors
    • Hall Effect Current Sensors PCB Mount
    • Hall Effect Voltage Transducers
    • Din Rail Mount Energy Transducers
  • Process Control
    • Temperature/Humidity Controllers
      • Back
      • 48x24mm Panel Mount
      • 48x48mm Panel Mount
      • 48x96mm Panel Mount
      • 96x96mm Panel Mount
      • Dual Loop Temperature and Humidity
      • 98x48mm Indicators
      • Pattern Controllers
      • Limit Controllers
      • PWM Controllers
      • Refigeration Controllers
    • Temperature & Humidity Sensors
      • Back
      • BSP Fittings and TC Cable
      • RTD's
      • Thermocouples
      • Bimetal Switches
      • Air Temp & Humidity Sensors
    • AC/DC Current Sensors with Process Outputs
      • Back
      • Solid Core AC Current Transformers with Process Outputs
      • Split Core AC Current Transformers with Process Outputs
      • DC Current Sensors with Process Outputs
    • Motors & Motor Control
      • Back
      • Motor Protection Breakers
      • Motors, Alternators, Starter Motors
      • Speed Relays, Encoders, PWM Contactors
      • Din Rail Mount Contactors
    • Programmable Logic Controllers (PLC)
    • HMI Touch Screens
    • Signal Conditioners
    • Timers
    • Monitoring Relays
    • Rotary Encoders
    • Pressure/Pneumatic Components
    • Mechanical Relays
    • Hour Meters
    • Microswitches
  • Power Control
    • Phase Angle Power Controllers
      • Back
      • Thyristor (SCR Based)
      • Solid State Relay (SSR) Based
    • Burst Fire Power Controllers
      • Back
      • Thyristor (SCR Based)
      • Solid State Relay (SSR) Based
    • Accessories/Spare parts and OEM Power Controller card sets
    • Pulse Transformers
    • Power Factor Controllers
    • PWM Controllers (HVAC)
  • Power Quality
    • EMC Filters
    • IEC Power Sockets & Plugs
      • Back
      • Sockets with Filter
      • Socktes and plugs without Filter
    • Power Factor Correction
      • Back
      • 3 Phase PFC Capacitors
      • Single Phase PFC Capacitors
      • MV Power Factor Capacitors
      • Capacitor Duty Contactors
      • SVG Modules & Smart Capacitor Banks
      • PFC Controllers
      • Power Factor Meters and Transducers
      • Detuned Reactors
    • Pulse Transformers
    • Chokes
    • Smart Sub Meters and Power Quality Analysers
    • Utility Scale Meters
  • Electrical Measurement
    • Hall Effect Current Sensors/Transducers
      • Back
      • Split Core AC Current Sensors Process Output
      • Solid Core AC Current Sensors with Process Outputs
      • DC Current Sensor with Process Outputs
      • Panel Mount
      • Busbar Mount
      • Surface Mount
      • PCB Mount
      • Automotive Sensors
      • LEM Accessories
    • Hall Effect Voltage Sensors/Transducers
      • Back
      • PCB Mount
      • Panel Mount
    • Current Transformers
      • Back
      • Solid Core
      • Split Core
      • Solid Core with Process Output
      • Split Core with Process Output
      • Core Balance CT's
    • Rogowski Coils (Rope CT's)
    • High Frequency 20Mhz or DC Current Sensors
    • High Precision Hall Effect Sensors
    • Clamp On Current Sensors
    • Signal Conditioners
    • Din Rail Mount Transducers
      • Back
      • Current
      • Voltage
      • Power
    • Digital Panel Meters
    • Synchronometers
    • kWh Meters
    • Utility Smart Meters, Tariff, ICG Meters
    • Power Quality Meters and Analysers
    • Moving Coil Meter
    • DC Current Shunts
  • Power Capacitors
    • Snubber Capacitors
    • Power Factor Correction
      • Back
      • Medium Voltage up to 22kV
      • Single Phase 525V
      • 3 Phase 525V
    • DC Link & Electrolytic Capacitors
    • 3 Phase 525V Power Factor Correction Capacitors
  • Power Semiconductors
    • Bridge Rectifiers
      • Back
      • Single Phase
      • Three Phase
    • Isolated Power Modules
      • Back
      • Dual Diode Modules
      • Dual Thyristor Modules
      • Thyristor(SCR)-Diode Modules
      • Single Diode Modules
      • Single Thyristor(SCR) Modules
      • Common Cathode Modules
    • Stud Mount Diodes and Thyristors(SCR)
      • Back
      • Metric Stud Diodes & Thyristors(SCR)
      • Imperial Diodes and Thyristors(SCR)
      • Flat Base Diode and Thyristor(SCR)
    • Capsule (PUK) Devices
      • Back
      • Diode Capsules
      • Thyristor(SCR) Capsules
    • Press Fit Diodes
    • IGBT
      • Back
      • IGBT Devices
      • IGBT Drivers
    • Other Welding & Generator Diodes
    • Silicon Carbide Modules
    • Discrete Components (limited)
    • Semiconductor Fuses
      • Back
      • BS88 Style Fuse Links
      • European NH Style Fuses
      • Cartridge Fuses & DIN Rail Holders
      • Fuse Kits for Gear Tray
      • Solar Fuses for DC or AC
  • Solid State Relays
    • AC Control Solid Sate Relays
    • DC Control Solid Sate Relays
    • AC Switching Solid State Relays
    • DC Switching Solid State Relays
    • Proportional Phase/Burst SSR
    • 3 Phase Solid State Relays
    • Solid State Relay Heatsink
    • 3 Phase Solid State Relays On Heatsink
    • Solid State Relay & Heatsink Assembled
      • Back
      • AC Load
      • DC Load
      • 3 Phase
    • PCB Mount
    • Slimline & Socket Din Rail Mount
    • Solid State Contactors
    • Cartridge Fuses up to 125 Amp
  • Contactors
    • AC/DC Contactors (IP67K)
      • Back
      • TVS Supression Diodes
    • DIN Rail Mount AC Contactors
      • Back
      • Auxiliary Contacts
      • Thermal Overload Relays
      • Diode and RC Supressors
    • Miniature Contactors
      • Back
      • Auxiliary Contacts
      • Thermal Overload Relays
      • Diode and RC Supressors
    • Installation Contactors
      • Back
      • Auxiliary Contacts & Terminal Covers
    • Capacitor Duty Contactors
    • MV and HV Contactors
    • Solid State Contactors
    • Motor Protection Switches
  • Relays
    • Monitoring Relays
    • Standard DIN Rail Mount Relays
    • Slimline Relays & Sockets
    • Bistable Relays
    • Time Relays
    • Earth Leakage Relays
    • Diode and RC Supressors
  • Energy Monitoring
    • DIN Rail Mount Transducers
      • Back
      • Current
      • Voltage
      • Power
    • kWh Meters
    • Current Transformers
    • Rogowski Coils (Rope CT's)
    • Monitoring Relays
    • Synchrometers
    • Wi-LEM Wireless Energy Monitoring
    • Ergo Energy Monitoring Software
    • Smart Sub-Meters and Power Quality Analysers
    • Battery Monitoring
    • Digital Panel Meter
    • Utility Smart Meters, Tariff, ICG Meters
  • Electrical Protection
    • Semiconductor Fuses
      • Back
      • BS88 Style Fuse Links
      • European NH Fuses
      • Cartridge Semiconductor Fuses/DIN Rail Holders
      • Fuse Kits for Gear Tray or Heatsink Mounting
      • Solar Fuses (New)
      • Automotive Power Fuses
    • Appliance & IEC Fuses
    • Appliance Thermal Circuit Breakers
    • Varistors (MOV)
    • Diode & RC Supressors
    • Surge Protection Devices
    • Snubber Capacitors
    • Earth Leakage Relays
    • Monitoring Relays
    • Mechanical Relays
    • Solar Fuses for DC or AC
    • Motor Protection Breakers
    • Residual Current Device (RCD)
    • Miniature Circuit Breakers (MCB)
    • DC Miniature Circuit Breakers (MCB)
    • RCBO's
  • Switches
    • Solar and Battery Switches
    • Momentary Switches
    • Metal Line Switches
    • Bistable Switches
    • Emergency Start Stop Buttons
    • Motor Protection Breaker
    • Low Voltage Disconnect Switches
    • DC Circuit Breakers
    • Appliance Circuit Breakers
    • Bimetal Thermal Switches
  • Heat Sink
    • Heatsink Extrusions
    • Cooling Fans
    • Heatsink for SSR's
    • Water Cooled
    • Natural Cooled
    • Fan Cooled
    • Clamps, Paste, Hardware
  • Stack Assemblies
    • Solid State Contactors
    • Bridge Rectifier Stacks
    • Water Cooled Stacks
    • High Voltage Diode Arrays
    • Welder/Charger Rectifier Stacks
    • Repair Accessories for Stacks
  • Test Equipment
    • High Precision Current Sensors
    • Precision Potentiometers
    • Power Semiconductor Test Equipment
    • Portable Meters & Power Quality Analysers
    • Clamp On Current Sensors
    • Synchrometers
    • High Frequency 20MHz or High DC Current Sensor
  • Low Voltage Switchgear
    • Motor Protection Switch
    • DC Circuit Breakers
    • DC Disconnect Switches
    • Metal Line Switches
    • Din Rail Mount Contactors
    • Standard Relays and Sockets
    • Bistable Relays
    • Slimline Relays and Sockets
    • Appliance Thermal Circuit Breakers
    • AC Disconnect Switches
    • Moulded Case Circuit Breakers (MCCB)
    • Miniature Circuit Breakers (MCB)
    • Residual Current Circuit Breakers (RCCB,RCD)
    • RCD with Circuit Breaker (RCBO)
    • Distribution Board Enclosures
    • Panel Indicators
    • Emergency Stop Buttons
    • Installation Contactors
    • RC and Transient Supressors
  • Appliance Connectors, Switches and Fuses
    • IEC Fuses
    • Fuse Holders
    • Micro Fuses (PCB)
    • Thermal Circuit Breakers & Rocker Switches
    • IEC Inlets & Sockets
    • IEC Inlets with Filters, Fuses, or Switches
    • Metal Line Switches
    • Thermoplastic Momentary Switches
  • DC Power Supplies
  • Communication Accessories
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  • E-Mobility
    • Back
    • Home 2 AC Powered EV Charger
    • AC & DC Sealed Contactors
      • Back
      • Diode and RC Supressors
    • Automotive Fuses
    • Automotive Current Sensors
    • Meters for Electric Vehicle Chargers
    • E-Bike Technology
    • Split Core Current Transformers
    • Split Core AC Current Sensors with Process Outputs
    • DC Current Sensors with Process Outputs
    • Hall Effect Current Sensors
    • Hall Effect Current Sensors PCB Mount
    • Hall Effect Voltage Transducers
    • Din Rail Mount Energy Transducers
  • Process Control Sale
    • Back
    • Temperature/Humidity Controllers
      • Back
      • 48x24mm Panel Mount
      • 48x48mm Panel Mount
      • 48x96mm Panel Mount
      • 96x96mm Panel Mount
      • Dual Loop Temperature and Humidity
      • 98x48mm Indicators
      • Pattern Controllers
      • Limit Controllers
      • PWM Controllers
      • Refigeration Controllers
    • Temperature & Humidity Sensors
      • Back
      • BSP Fittings and TC Cable
      • RTD's
      • Thermocouples
      • Bimetal Switches
      • Air Temp & Humidity Sensors
    • AC/DC Current Sensors with Process Outputs
      • Back
      • Solid Core AC Current Transformers with Process Outputs
      • Split Core AC Current Transformers with Process Outputs
      • DC Current Sensors with Process Outputs
    • Motors & Motor Control
      • Back
      • Motor Protection Breakers
      • Motors, Alternators, Starter Motors
      • Speed Relays, Encoders, PWM Contactors
      • Din Rail Mount Contactors
    • Programmable Logic Controllers (PLC)
    • HMI Touch Screens
    • Signal Conditioners
    • Timers
    • Monitoring Relays
    • Rotary Encoders
    • Pressure/Pneumatic Components
    • Mechanical Relays
    • Hour Meters
    • Microswitches
  • Power Control
    • Back
    • Phase Angle Power Controllers
      • Back
      • Thyristor (SCR Based)
      • Solid State Relay (SSR) Based
    • Burst Fire Power Controllers
      • Back
      • Thyristor (SCR Based)
      • Solid State Relay (SSR) Based
    • Accessories/Spare parts and OEM Power Controller card sets
    • Pulse Transformers
    • Power Factor Controllers
    • PWM Controllers (HVAC)
  • Power Quality
    • Back
    • EMC Filters
    • IEC Power Sockets & Plugs
      • Back
      • Sockets with Filter
      • Socktes and plugs without Filter
    • Power Factor Correction
      • Back
      • 3 Phase PFC Capacitors
      • Single Phase PFC Capacitors
      • MV Power Factor Capacitors
      • Capacitor Duty Contactors
      • SVG Modules & Smart Capacitor Banks
      • PFC Controllers
      • Power Factor Meters and Transducers
      • Detuned Reactors
    • Pulse Transformers
    • Chokes
    • Smart Sub Meters and Power Quality Analysers
    • Utility Scale Meters
  • Electrical Measurement
    • Back
    • Hall Effect Current Sensors/Transducers
      • Back
      • Split Core AC Current Sensors Process Output
      • Solid Core AC Current Sensors with Process Outputs
      • DC Current Sensor with Process Outputs
      • Panel Mount
      • Busbar Mount
      • Surface Mount
      • PCB Mount
      • Automotive Sensors
      • LEM Accessories
    • Hall Effect Voltage Sensors/Transducers
      • Back
      • PCB Mount
      • Panel Mount
    • Current Transformers
      • Back
      • Solid Core
      • Split Core
      • Solid Core with Process Output
      • Split Core with Process Output
      • Core Balance CT's
    • Rogowski Coils (Rope CT's)
    • High Frequency 20Mhz or DC Current Sensors
    • High Precision Hall Effect Sensors
    • Clamp On Current Sensors
    • Signal Conditioners
    • Din Rail Mount Transducers
      • Back
      • Current
      • Voltage
      • Power
    • Digital Panel Meters
    • Synchronometers
    • kWh Meters
    • Utility Smart Meters, Tariff, ICG Meters
    • Power Quality Meters and Analysers
    • Moving Coil Meter
    • DC Current Shunts
  • Power Capacitors
    • Back
    • Snubber Capacitors
    • Power Factor Correction
      • Back
      • Medium Voltage up to 22kV
      • Single Phase 525V
      • 3 Phase 525V
    • DC Link & Electrolytic Capacitors
    • 3 Phase 525V Power Factor Correction Capacitors
  • Power Semiconductors
    • Back
    • Bridge Rectifiers
      • Back
      • Single Phase
      • Three Phase
    • Isolated Power Modules
      • Back
      • Dual Diode Modules
      • Dual Thyristor Modules
      • Thyristor(SCR)-Diode Modules
      • Single Diode Modules
      • Single Thyristor(SCR) Modules
      • Common Cathode Modules
    • Stud Mount Diodes and Thyristors(SCR)
      • Back
      • Metric Stud Diodes & Thyristors(SCR)
      • Imperial Diodes and Thyristors(SCR)
      • Flat Base Diode and Thyristor(SCR)
    • Capsule (PUK) Devices
      • Back
      • Diode Capsules
      • Thyristor(SCR) Capsules
    • Press Fit Diodes
    • IGBT
      • Back
      • IGBT Devices
      • IGBT Drivers
    • Other Welding & Generator Diodes
    • Silicon Carbide Modules
    • Discrete Components (limited)
    • Semiconductor Fuses
      • Back
      • BS88 Style Fuse Links
      • European NH Style Fuses
      • Cartridge Fuses & DIN Rail Holders
      • Fuse Kits for Gear Tray
      • Solar Fuses for DC or AC
  • Solid State Relays
    • Back
    • AC Control Solid Sate Relays
    • DC Control Solid Sate Relays
    • AC Switching Solid State Relays
    • DC Switching Solid State Relays
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  • Fastron Electronics Store Home
  • Power Factor Correction
  • Connection Types for Power Factor Correction Capacitors
Article

Connection Types for Power Factor Correction Capacitors

  • Power Factor Correction
  • 17 Mar, 2020
  • Posted by: Daniel Rehe

Connection Topologies for Power Factor Correction Capacitors & Capacitor Banks

In this article we will breifly explain the 4 types of capacitor connection topologies for Power Factor Correction capacitors, along with rules to apply for series or parallel connected capacitor banks. 

1) Single Phase 

Single Phase PFC capacitors are simply connected from line to neutral.

2) 3 Phase Four Wire Y (Star) connected loads

The Capacitors are generally connected between L1 and Neutral, L2 and Neutral and L3 and Neutral in order to reduce the voltage seen by the capacitors, any external fuses, and the cabling/busbar system which rediuces cost and is generally safer due to the lower voltages.

4 Wire Star

3) 3 Phase 3 Wire Y (Star) connected loads

Capacitors are connected in parallel to each load, or Line to Line, L1 to Star Point(L2,L3), L2 to Star Point(L1,L3) L3 to Star Point (L1,L2)

3 Wire Star

Many Low Voltage Capacitors in the market come interally connected in 3 Wire Star configuration.

3) 3 Phase Delta (Most Common for Low Voltage) connected loads

Capacitors are connected in parallel to each load, or Line to Line, L1 to L2, L2 to L3, L3 to L1

Delta Connected Loads

Most Low Voltage Capacitors in the market come interally connected in Delta configuration.

5) If you need to increase Kvar rating due to capacitor design limitations

In this case we connect multiple capacitors in parallel to increase the Capacitance (uf) and therefore the kVar rating.

 

PFC Caps in parallel

The basic formula is as follows where Q = Kvar

Q=2π*fn*Un*Un*C

6) Higher voltages than 22kV

In this case we need to connect multiple capacitors in series. Note that in series the capacitor value must be identical, and connecting in this way will decrease the effective capacitance seen by the circuit/load.

PFC Caps in Series

 

The Effective Capacitance (CT)will be 1/CT = 1/C1 + 1/C2 +1/C3 

In many cases to achieve the reqired voltage and capacitance rating, a bank of parallel and Series connected capacitors are required.

Real world applications

PFC with short circuited Motor

PFC Cap connection to a motor with starter on rotor

PFC Cap connection to a motor conected by ordinary star-triangle switch

PFC Cap connection to a motor conected by special star-triangle switch for motors of any rated power

PFC Cap connection to an automatic star-triangle switch for motors of any power rating

Contact us for design and manufacture of Power Factor Correction Capacitor Banks

For more detailed design information on selecting and connecting capacitors you can download Iskra Systemi guideline here

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