RARA IRM800 Series

RARA IRM800 Series

The IRM800 metal clad wire wound resistor series from RARA offers a power rating of up to 800W on a heat sink (360W in free air) with available resistance values between 0.1Ω and 112Ω (inductive design) or between 0.1Ω and 28.8Ω (non-inductive design). These high power resistors are available with tolerances of ±1.0%, ±2.0%, ±5.0% and ±10.0% as standard with other options available including flying leads or tab terminals, as well as inductive or non-inductive resistive windings. The IRM800 series from RARA are a metal cover type with an extruded aluminium housing providing strong and rugged protection all with a temperature range from -55°C up to +200°C

  • Metal clad wire wound resistor
  • Option of flying leads, parallel or series terminal connections
  • Inductive resistance ranges available between 0.1Ω and 112Ω (flying leads), 0.1Ω and 11Ω (parallel tab terminal connection) or 11.1Ω and 112Ω (serial tab terminal connection)
  • Non-inductive resistance ranges available between 0.1Ω and 28.8Ω (flying leads), 0.1Ω and 7.2Ω (parallel terminal connection) or 7.3Ω and 28.8Ω (serial terminal connection)
  • TCR of +260 ppm/°C maximum
  • Tolerance values available of ±1.0%, ±2.0%, ±5.0% and ±10.0%
  • Power rating of 800W on a heat sink (360W in free air)
  • Metal cover type with an extruded aluminium housing
  • Insulation resistance of 20MΩ minimum
  • Temperature range between -55°C and +200°C
  • Short time overload of 10 x power rating for 5 seconds

Typical applications for the IRM series include:

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

The below table gives the specifications available for the IRM series including the IRM800 resistors:

RARA IRM800 Specifications

* Note: Tab TP = terminal parallel connection, Tab TS = terminal serial connection

Specifications
Additional Features
  • Metal clad wire wound resistor
  • Option of flying leads, parallel or series connections
  • Inductive or non-inductive design
  • Insulation resistance of 20MΩ minimum
  • Temperature range of -55°C up to +200°C
  • Metal cover type with an extruded aluminium housing
  • Short time overload of 10 x power rating is 5 seconds
Maximum Power Rating On heat sink
  • 800W
In free air
  • 360W
Maximum Resistance Inductive
  • 112Ω (flying leads)
  • 112Ω (serial tab terminal connection)
  • 11Ω (parallel tab terminal connection)
Non-inductive
  • 28.8Ω (flying leads)
  • 28.8Ω (serial tab terminal connection)
  • 7.3Ω (parallel tab terminal connection)
Minimum Resistance Inductive
  • 0.1Ω (flying leads)
  • 11.1Ω (serial tab terminal connection)
  • 0.1Ω (parallel tab terminal connection)
 Non-inductive
  • 0.1Ω (flying leads)
  • 7.3Ω (serial tab terminal connection)
  • 0.1Ω (parallel tab terminal connection)
TCR ±260ppm/°C maximum
Tolerance
  • ±1.0% (F)
  • ±2.0% (G)
  • ±5.0% (J)
  • ±10.0% (K)

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
PDF Document RARA IRV, ULV, IRM and ULM 600 to 1200 series metal clad wire wound resistor datasheet

 

 

 

This product is available fully compliant to the RoHS EU directive 2011/65/EU.

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