• RARA

Metal Clad Wire Wound Resistors

RARA ULM1000

  • Metal clad wire wound resistor
  • Resistance options from 0.1Ω up to 140Ω
  • Power rating of up to 1000W (on heatsink)
  • Tolerance options between ±1% and ±10.0%
  • TCR of +260 ppm/°C maximum
  • For Non UL Approval see the IRM
  • Compliant

The ULM1000 metal clad wire wound resistor series from RARA offers a power rating of up to 1000W on a heat sink (400W in free air) with available resistance values between 0.1Ω and 140Ω (inductive design) or between 0.1Ω and 36Ω (non-inductive design). These high power resistors are UL approved and 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 ULM1000 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 0.17Ω and 140Ω (flying leads), 0.1Ω and 18Ω (parallel tab terminal connection) or 18.1Ω and 90Ω (serial tab terminal connection)
  • Non-inductive resistance ranges available between 0.17Ω and 36Ω (flying leads), 0.1Ω and 9Ω (parallel terminal connection) or 9.1Ω and 36Ω (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 1000W on a heat sink (400W in free air)
  • Insulation resistance of 20MΩ minimum
  • UL approved
  • Metal cover type with an extruded aluminium housing
  • Temperature range between -55°C and +200°C
  • Short time overload of 10 x power rating for 5 seconds

Typical applications for the ULM series include:

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

Specifications

Weight 1.83500 kg
Dimensions 59.00 x 61.00 x 335.00mm
Product Type

, ,

Series / Model

Power Rating

,

Minimum Resistance

0.1Ω

Maximum Resistance

140Ω

Tolerance

, , ,

Temperature Coefficient

Insulation Resistance

20MΩ minimum

Inductive or Non Inductive

Inductive, Non Inductive

Termination / Connection

Flying Leads, Parallel Tab Terminal Connection, Serial Tab Terminal Connection

Temperature Range (°C)

-55 to +200°C (Cement)

Due to the technical complexity nature of these components, complete specifications, performance data, dimensional information and configuration options are provided within the product datasheet.

Ordering Info

Below is the model number configuration for the ULM series from RARA.
Ordering example: ULM1000N6.75ΩKFL100
ULMXXXXXXXXXΩXFLXXX

Series/Model (ULMXXX)

ULM1000

Connection * (X)

P Parallel
S Series

Inductive/Non-Inductive (X)

(Blank)      Inductive
N      Non-Inductive

Resistance Value (XXXXΩ)

Resistance value expressed in ohms, for example 220.5Ω or 2Ω.

Tolerance (X)

F
±1%
G
±2%
J
±5%
K
±10%

Termination (FLXXX)

FL XXX      Flying Lead **
(Blank)     Tab Terminal

* Defined by the resistance value chosen, see datasheet for full details
** Please include requested lead length with request, for example, FL300 for 300mm flying leads

Product Variations

SKUResistance ValueToleranceInductive or Non InductiveTermination / ConnectionLead Length
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±1%InductiveFlying Leads
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±1%InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±1%Non InductiveFlying Leads
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±1%Non InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±10%InductiveFlying Leads
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±10%InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±10%Non InductiveFlying Leads
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±10%Non InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±2%InductiveFlying Leads
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±2%InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±2%Non InductiveFlying Leads
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±2%Non InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±5%InductiveFlying Leads
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±5%InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±5%Non InductiveFlying Leads
RARA ULM1000 SeriesCustom (0.17Ω - 9Ω)±5%Non InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.1Ω - 0.16Ω)±1%InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.1Ω - 0.16Ω)±1%Non InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.1Ω - 0.16Ω)±10%InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.1Ω - 0.16Ω)±10%Non InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.1Ω - 0.16Ω)±2%InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.1Ω - 0.16Ω)±2%Non InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.1Ω - 0.16Ω)±5%InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (0.1Ω - 0.16Ω)±5%Non InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±1%InductiveFlying Leads
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±1%InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±1%Non InductiveFlying Leads
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±1%Non InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±10%InductiveFlying Leads
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±10%InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±10%Non InductiveFlying Leads
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±10%Non InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±2%InductiveFlying Leads
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±2%InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±2%Non InductiveFlying Leads
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±2%Non InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±5%InductiveFlying Leads
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±5%InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±5%Non InductiveFlying Leads
RARA ULM1000 SeriesCustom (18.1Ω - 36Ω)±5%Non InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (36.1Ω - 90Ω)±1%InductiveFlying Leads
RARA ULM1000 SeriesCustom (36.1Ω - 90Ω)±1%InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (36.1Ω - 90Ω)±10%InductiveFlying Leads
RARA ULM1000 SeriesCustom (36.1Ω - 90Ω)±10%InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (36.1Ω - 90Ω)±2%InductiveFlying Leads
RARA ULM1000 SeriesCustom (36.1Ω - 90Ω)±2%InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (36.1Ω - 90Ω)±5%InductiveFlying Leads
RARA ULM1000 SeriesCustom (36.1Ω - 90Ω)±5%InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±1%InductiveFlying Leads
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±1%InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±1%Non InductiveFlying Leads
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±1%Non InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±10%InductiveFlying Leads
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±10%InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±10%Non InductiveFlying Leads
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±10%Non InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±2%InductiveFlying Leads
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±2%InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±2%Non InductiveFlying Leads
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±2%Non InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±5%InductiveFlying Leads
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±5%InductiveParallel Tab Terminal Connection
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±5%Non InductiveFlying Leads
RARA ULM1000 SeriesCustom (9.1Ω - 18Ω)±5%Non InductiveSerial Tab Terminal Connection
RARA ULM1000 SeriesCustom (90.1Ω - 140Ω)±1%InductiveFlying Leads
RARA ULM1000 SeriesCustom (90.1Ω - 140Ω)±10%InductiveFlying Leads
RARA ULM1000 SeriesCustom (90.1Ω - 140Ω)±2%InductiveFlying Leads
RARA ULM1000 SeriesCustom (90.1Ω - 140Ω)±5%InductiveFlying Leads

ULM Series Products

Electronic Components

 Product nameDimensionsPower RatingMinimum ResistanceMaximum ResistanceToleranceTemperature CoefficientDatasheet 
RARA ULM600RARA ULM60059.00 x 61.00 x 235.00mm330W, 600W0.1Ω94Ω±1%, ±2%, ±5%, ±10%±260 ppm/°C View Product
RARA ULM800RARA ULM80059.00 x 61.00 x 285.00mm360W, 800W0.1Ω112Ω±1%, ±2%, ±5%, ±10%±260 ppm/°C View Product
RARA ULM1000RARA ULM100059.00 x 61.00 x 335.00mm400W, 1kW0.1Ω140Ω±1%, ±2%, ±5%, ±10%±260 ppm/°C View Product
RARA ULM1200RARA ULM120059.00 x 61.00 x 405.00mm480W, 1.2kW0.1Ω160Ω±1%, ±2%, ±5%, ±10%±260 ppm/°C View Product
RARA ULM1600 RARA ULM1600100.00 x 50.00 x 330.00mm570W0.3Ω88Ω±1%, ±5%, ±10%±260 ppm/°C View Product
RARA ULM2000 RARA ULM2000100.00 x 50.00 x 400.00mm650W0.45Ω113Ω±1%, ±5%, ±10%±260 ppm/°C View Product
RARA ULM2400 RARA ULM2400100.00 x 50.00 x 480.00mm720W0.6Ω144Ω±1%, ±5%, ±10%±260 ppm/°C View Product
RARA ULM2800 RARA ULM2800100.00 x 50.00 x 550.00mm750W0.7Ω135Ω±1%, ±5%, ±10%±260 ppm/°C View Product

Resources

Product Datasheet

Supporting Manufacturer Information

Related Products

Metal Clad Wire Wound Resistors

RARA ULM1000