RARA IRF250 Series

  • RARA

Product Features

  • Flat type metal clad wire wound resistor
  • Cement or silicone filling material with an extruded aluminium housing
  • 300mm flying leads
  • Excellent heat dissipation
  • Insulation resistance of 20MΩ minimum
  • Temperature range of -55°C up to +200°C (cement) or -55°C up to +150°C (silicone)
  • Short time overload of 5 x power rating is 5 seconds

Applications

  • Motion Control
  • Renewables
  • Compliant

Description

The IRF250 flat type metal clad wire wound resistor series from RARA, offers a power rating of up to 250W on a heat sink and available resistance values between 1Ω and 2.79kΩ. These high power and low inductance resistors are designed for industrial and other applications where space is at a premium, the flat design also allows for excellent heat dissipation. The IRF250 series from RARA offers an extruded aluminium housing which provides strong and rugged protection, with options of cement or silicone filling materials as well as tolerances as low as ±0.5%. This resistor series offers a temperature range from -55°C up to +200°C (cement filling material).

  • Flat space saving metal clad wire wound resistor
  • Cement (standard) or silicone filling material with an extruded aluminium housing
  • 300mm flying leads
  • Resistance ranges available between 1Ω and 2.79kΩ
  • TCR of +260 ppm/°C maximum
  • Tolerance values available of ±0.5%, ±1.0%, ±2.0%, ±5.0% and ±10.0%
  • Power rating of 250W (on a heat sink)
  • Insulation resistance of 20MΩ minimum
  • Temperature range between -55°C and +200°C (cement) or -55°C and +150°C (silicone)
  • Short time overload of 5 x power rating for 5 seconds

 

Typical applications for the IRF series include:

  • Motor drives
  • Braking and snubbing applications
  • Power sources for industrial equipment

 

The below table gives the specifications available for the IRF series including the IRF250 resistors:

RARA IRF250 Specifications

 

Specifications

Weight 245.00000 kg
Dimensions 180.00 × 80.00 × 10.00 mm
Series / Model

Minimum Resistance

Maximum Resistance

Tolerance

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Power Rating

Additional Features

Flat type metal clad wire wound resistorCement or silicone filling material with an extruded aluminium housing300mm flying leadsExcellent heat dissipationInsulation resistance of 20MΩ minimumTempera

Resistance Value

Temperature Coefficient

Filling Material

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RARA IRF250 Series Resources

Product Datasheet

RARA IRN, ULN, IRF and ULF Technical Library

We are pleased to provide you with a range of additional content including videos, product datasheets, case studies, white papers and application notes for your reference. Please see below for the latest content available:

 

 

DOCUMENTATION
RARA IRN, ULN, IRF and ULF series flat space saving metal clad wire wound resistor datasheet

 

 

 

RARA IRF250 Series

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