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Power Resistors (Through Hole)



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  1. BRK high load and braking resistor series 100W (1kW/sec. pulse handling)

    BRK high load and braking resistor series 100W (1kW/sec. pulse handling)

    The BRK resistor series has a continuous power rating of 100W (on a suitable heatsink) with a high pulse power capability of 1kW for 1 second. They are designed with a  2mm thick copper baseplate for optimum heat transfer to the heatsink. 

    • 100W continuous power rating
    • 1kW pulse power for 1second
    • Resistance values of 10Ω, 22, 47, 68, 100 & 200Ω
    • 275mm silicone rubber insulated flying leads
    • Protection type IP54
    More Info
  2. BRQ high load and braking resistor series 300W (3kW/sec. pulse handling)

    BRQ high load and braking resistor series 300W (3kW/sec. pulse handling)

    The BRQ resistor series has a continuous power rating of 300W (on a suitable heatsink) with a high pulse power capability of 3kW for 1 second. They are designed with a thick copper baseplate for optimum heat transfer to the heatsink. 

    • Power rating of 300W
    • 3kW pulse power for 1s
    • Resistance values of 10Ω, 22, 47, 100 & 150Ω
    • 275mm silicone rubber insulated flying leads
    • Protection type IP54
    More Info
  3. DBR series power resistor assembly 8KW - 60kW

    DBR series power resistor assembly 8KW - 60kW

    The DBR series of dynamic braking resistors is designed for indoor (DBRI) or outdoor (DBRO) applications.  The resistor elements are wound from a choice of inductive edge wound (EW) or helical wound (HW) elements, and non-inductive wire grid (VW) elements.

    • 8KW to 50KW free air power handling (increased by 20% approx. with additional fan)
    • 2Ω to 150Ω resistance range.
    • Watertight external structure for outdoor applications.
    • Custom design options
    More Info
  4. EW series very high power resistor assemblies 3kW - 12kW

    EW series very high power resistor assemblies 3kW - 12kW

    The unit is enclosed in a steel case which conforms to international safety standards, and has a baked powder coated finish for durability.

    • 3kW to 8kW free air power handling, rated 50% higher with fan cooling.
    • 0.5Ω to 48Ω resistance range.
    • ±5% and ±10% tolerance options
    • Optional thermostat for over-temperature protection.
    • Steel case provides rugged and strong protection.
    • Custom design options
    More Info
  5. FNP Series Ultra-High Precision High Power Shunt Resistor

    FNP Series Ultra-High Precision High Power Shunt Resistor

    The FNP shunt resistor series from Alpha Electronics offers a range of very high precision current sensing resistors with a maximum power rating of 500W on a suitable heat sink at 25°C.

    The FNP series utilises a Ni-Cr Bulk Metal® foil technology for low TCR, and have a working temperature range between -55°C and +125°C. a built-in Pt100 sensor is incorporated into the resistor for monitoring the resistive element, though this can be omitted as a custom request

    • Power rating of 500W on a suitable heat sink
    • 0.001Ω to 1Ω
    • ±1% to ±0.05% tolerance options available
    • TCR options of ±1ppm/°C (Z) and 2.5ppm/°C (Y) between +25°C and +60°C, and ±5ppm/°C (X) between -25°C to +125°C.
    More Info
  6. HPF250 series non inductive resistor 250W

    HPF250 series non inductive resistor 250W

    This model is also ideal for applications where a high level of vibration could be encountered.

    • 250W on heatsink
    • 5Ω-1kΩ
    • Non inductive
    • Low thermal resistance to heatsink
    More Info
  7. HRA Series high power resistor assemblies

    HRA Series high power resistor assemblies

    The resistors are enclosed in a steel case which conforms to international safety standards, and has a baked powder coated finish for durability.

    • Power ratings from 960W - 5kW
    • 0.1Ω to 1.6kΩ resistance value range (power dependant)
    • Steel case provides rugged and strong protection
    • Custom design options available
    More Info
  8. IRB Series Metal Clad Inductive Economy resistors.

    IRB Series Metal Clad Inductive Economy resistors.

    This IRB series is a metal clad inductively wire-wound resistor, ideal for low cost motor drive and braking applications.

    • 60W, 80W and 120W options
    • 0.1Ω - 1.3KΩ inductively wound resistance range
    • Operating temperature range of -55°C to +200°C
    • Up to 5600Vac dielectric strength
    More Info
  9. IRB-N Series Metal Clad Non-Inductive Economy Resistors

    IRB-N Series Metal Clad Non-Inductive Economy Resistors

    This IRB series is a metal clad non-inductively wire-wound resistor, ideal for low cost applications.

    • 60W, 80W and 120W options
    • 0.1Ω - 300Ω non-inductively wound resistance range
    • Operating temperature range of -55°C to +200°C
    • Up to 5600Vac dielectric strength
    More Info
  10. IRC Series

    IRC Series

    The IRC(C=Compact type) models are compact wire wound,metal clad resistors. These models have an extruded aluminum housing providing strong and rugged protection. These models are available with flying leads. The most common applications for these models are: Motor drives,braking and snubber applications and power sources for industrial equipment. More Info
  11. IRF100 series low profile 100W

    IRF100 series low profile 100W

    The IRF100C is a metal-clad, wire-wound, high-power resistor designed for industrial and other applications where space is at a premium and performance is a must. This resistor is ideal for motor braking applications.

    • 100W
    • 47Ω-150Ω
    • Flat design allows excellent heat dissipation
    • Extremely low inductance resistors
    More Info
  12. IRF300 series low profile 300W

    IRF300 series low profile 300W

    The IRF300C is a metal-clad, wire-wound, high-power resistor designed for industrial and other applications where space is at a premium and performance is a must. This resistor is ideal for motor braking applications.

    • 300W
    • 47Ω-150Ω
    • Flat design allows excellent heat dissipation
    • Extremely low inductance resistors
    More Info
  13. IRN/IRF series low profile wire wound resistors 50-500W

    IRN/IRF series low profile wire wound resistors 50-500W

    The IRN/IRF series are metal-clad, wire-wound, high-power resistors designed for industrial and other applications where space is at a premium and performance is a must. This resistor is ideal for motor braking applications.

    • 50 to 500W
    • 47Ω-150Ω
    • Flat design allows excellent heat dissipation
    • Extremely low inductance resistors
    More Info
  14. IRP series very high power resistor assemblies 1000-10000W

    IRP series very high power resistor assemblies 1000-10000W

    The base is zinc plated steel. The cover is baked powder coated steel.

    • 10,000W
    • 0.1Ω to 1.4KΩ
    • Non inductive versions available
    • Custom design options
    More Info
  15. IRS30 series low profile metal clad resistors 30W

    IRS30 series low profile metal clad resistors 30W

    The IRS30 is a low profile, low cost power resistor.  The most common applications for this model are motor drives, braking & snubber applications and heaters.

    • 30W
    • Custom resistance values between 1Ω to 420Ω
    • Tolerances of ±0.5% to ±10% available.
    • 2500Vac dielectric strength
    More Info
  16. IRS50 series low profile metal clad resistors 50W

    IRS50 series low profile metal clad resistors 50W

    The IRS50 is a low profile, low cost power resistor.  The most common applications for this model are motor drives, braking & snubber applications and heaters.

    • 50W
    • 10Ω, 20Ω, 50Ω, 100Ω & 150Ω values at ±5% tolerance available from stock.
    • Custom resistance values between 1Ω to 500Ω
    • Tolerances of ±0.5% to ±10% available.
    • 2500Vac dielectric strength
    More Info
  17. IRV series very high power 1600-2800W

    IRV series very high power 1600-2800W

    The most common applications for these models are: motor drives, braking and snubber applications and power sources for industrial equipment. These models are fully RoHS compliant.

    • 1600-2800W
    • 2.5Ω to 96Ω
    • UL approved
    • Custom design options
    More Info
  18. IRV-ULV series metal clad resistors 600-1200W UL approved

    IRV-ULV series metal clad resistors 600-1200W UL approved

    The ULV model is a UL approved power resistor. Options include flying leads or tab terminals and inductive or non-inductive windings.

    • 600-1200W
    • 0.1Ω to 48Ω
    • Extruded aluminium housing provides rugged and strong protection.
    • IP65 options available
    More Info
  19. IRV/IRH ULV/ULH series wire wound resistors 60-500W

    IRV/IRH ULV/ULH series wire wound resistors 60-500W

    The ULV and ULH devices are UL approved versions of the IRV and IRH models suitable for applications where UL approved power resistors are needed

    • 60-500W
    • 0.1Ω to 6.8KΩ
    • Extruded aluminium housing provides rugged and strong protection.
    • 5400V dielectric strength
    More Info
  20. IT series dynamic braking unit 3.2kW - 12.8kW

    IT series dynamic braking unit 3.2kW - 12.8kW

    Up to 4 units can be used in parallel to increase power rating. The units are suitable to be used with inverters with capacities from 11kW to 75kW

    • 3.2kW to 12.8kW ( with fan )
    • 8.5Ω to 33.9Ω
    • Naturally cooled
    • 400V and 800V options
    More Info

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