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

Resistance Value

Tolerance

Inductive or Non Inductive

Termination / Connection

Lead Length

Clear

Quantity

Datasheet

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	Metal Clad, Wirewound, Resistor
Series / Model	ULM
Power Rating	400W, 1kW
Minimum Resistance	0.1Ω
Maximum Resistance	140Ω
Tolerance	±1%, ±2%, ±5%, ±10%
Temperature Coefficient	±260 ppm/°C
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	-55 to +200°C

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}

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

Product Variations

SKU	Resistance Value	Tolerance	Inductive or Non Inductive	Termination / Connection
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±1%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±1%	Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±1%	Non Inductive	Flying Leads
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±1%	Non Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±10%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±10%	Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±10%	Non Inductive	Flying Leads
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±10%	Non Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±2%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±2%	Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±2%	Non Inductive	Flying Leads
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±2%	Non Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±5%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±5%	Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±5%	Non Inductive	Flying Leads
RARA ULM1000 Series	Custom (0.17Ω - 9Ω)	±5%	Non Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.1Ω - 0.16Ω)	±1%	Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.1Ω - 0.16Ω)	±1%	Non Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.1Ω - 0.16Ω)	±10%	Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.1Ω - 0.16Ω)	±10%	Non Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.1Ω - 0.16Ω)	±2%	Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.1Ω - 0.16Ω)	±2%	Non Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.1Ω - 0.16Ω)	±5%	Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (0.1Ω - 0.16Ω)	±5%	Non Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±1%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±1%	Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±1%	Non Inductive	Flying Leads
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±1%	Non Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±10%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±10%	Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±10%	Non Inductive	Flying Leads
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±10%	Non Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±2%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±2%	Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±2%	Non Inductive	Flying Leads
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±2%	Non Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±5%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±5%	Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±5%	Non Inductive	Flying Leads
RARA ULM1000 Series	Custom (18.1Ω - 36Ω)	±5%	Non Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (36.1Ω - 90Ω)	±1%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (36.1Ω - 90Ω)	±1%	Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (36.1Ω - 90Ω)	±10%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (36.1Ω - 90Ω)	±10%	Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (36.1Ω - 90Ω)	±2%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (36.1Ω - 90Ω)	±2%	Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (36.1Ω - 90Ω)	±5%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (36.1Ω - 90Ω)	±5%	Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±1%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±1%	Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±1%	Non Inductive	Flying Leads
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±1%	Non Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±10%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±10%	Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±10%	Non Inductive	Flying Leads
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±10%	Non Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±2%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±2%	Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±2%	Non Inductive	Flying Leads
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±2%	Non Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±5%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±5%	Inductive	Parallel Tab Terminal Connection
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±5%	Non Inductive	Flying Leads
RARA ULM1000 Series	Custom (9.1Ω - 18Ω)	±5%	Non Inductive	Serial Tab Terminal Connection
RARA ULM1000 Series	Custom (90.1Ω - 140Ω)	±1%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (90.1Ω - 140Ω)	±10%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (90.1Ω - 140Ω)	±2%	Inductive	Flying Leads
RARA ULM1000 Series	Custom (90.1Ω - 140Ω)	±5%	Inductive	Flying Leads

ULM Series Products

Electronic Components

Product name	Dimensions	Power Rating	Minimum Resistance	Maximum Resistance	Tolerance	Temperature Coefficient
RARA ULM600	59.00 x 61.00 x 235.00mm	330W, 600W	0.1Ω	94Ω	±1%, ±2%, ±5%, ±10%	±260 ppm/°C	View Product
RARA ULM800	59.00 x 61.00 x 285.00mm	360W, 800W	0.1Ω	112Ω	±1%, ±2%, ±5%, ±10%	±260 ppm/°C	View Product
RARA ULM1000	59.00 x 61.00 x 335.00mm	400W, 1kW	0.1Ω	140Ω	±1%, ±2%, ±5%, ±10%	±260 ppm/°C	View Product
RARA ULM1200	59.00 x 61.00 x 405.00mm	480W, 1.2kW	0.1Ω	160Ω	±1%, ±2%, ±5%, ±10%	±260 ppm/°C	View Product
RARA ULM1600	100.00 x 50.00 x 330.00mm	570W	0.3Ω	88Ω	±1%, ±5%, ±10%	±260 ppm/°C	View Product
RARA ULM2000	100.00 x 50.00 x 400.00mm	650W	0.45Ω	113Ω	±1%, ±5%, ±10%	±260 ppm/°C	View Product
RARA ULM2400	100.00 x 50.00 x 480.00mm	720W	0.6Ω	144Ω	±1%, ±5%, ±10%	±260 ppm/°C	View Product
RARA ULM2800	100.00 x 50.00 x 550.00mm	750W	0.7Ω	135Ω	±1%, ±5%, ±10%	±260 ppm/°C	View Product

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Metal Clad Wire Wound Resistors

RARA ULM1000

Specifications

Ordering Info

Series/Model (ULMXXX)

Connection * (X)

Inductive/Non-Inductive (X)

Resistance Value (XXXXΩ)

Tolerance (X)

Termination (FLXXX)

Product Variations

ULM Series Products

Electronic Components

Resources

Product Datasheet

Supporting Manufacturer Information

Related Products

Metal Clad Wire Wound Resistors

RARA ULM1000