ULM series

Introducing the ULM resistors, an exceptional solution meticulously designed for industrial applications with the added assurance of UL approval. Crafted with precision, the ULM series features metal-clad resistors housed in durable aluminum, engineered for efficient chassis mounting, and offering versatile power ratings from 330W to 750W in free air and 600W to 1200W when heat sink mounted.

Engineers benefit from a broad resistance range, spanning from 0.1 to 160ฮฉ (inductive) and 0.1 to 48ฮฉ (non-inductive). Tolerance options of ยฑ1, ยฑ2, ยฑ5, and ยฑ10 percent provide a customized solution for diverse applications. The maximum temperature coefficient of resistance (TCR) is capped at 260 ppm/ยฐC, ensuring stability across a wide temperature range from -55โ„ƒ to +200โ„ƒ.

The ULM resistors excel in braking and snubber applications, motor drives, and power sources for industrial equipment, showcasing unparalleled adaptability in diverse engineering scenarios. The added distinction of UL approval establishes the ULM series as a top-tier choice for engineers prioritizing compliance with the highest safety standards in their industrial projects.

For engineers considering a non-UL-approved alternative, the IRM series stands as a robust choice. Housed in durable aluminum and engineered for efficient chassis mounting, the IRM series offers similar power ratings and resistance options, making it a reliable solution for various industrial applications.

  • RARA
  • Metal clad wire wound resistor
  • Resistance options from 0.1ฮฉ up to 94ฮฉ
  • Power rating of up to 600W (on heatsink)
  • Tolerance options between ยฑ1% and ยฑ10.0%
  • TCR of +260 ppm/ยฐC maximum
  • For Non UL Approval see the IRM
  • RARA
  • Metal clad wire wound resistor
  • Resistance options from 0.1ฮฉ up to 112ฮฉ
  • Power rating of up to 800W (on heatsink)
  • Tolerance options between ยฑ1% and ยฑ10.0%
  • TCR of +260 ppm/ยฐC maximum
  • For Non UL Approval see the IRM
  • RARA
  • Metal clad wire wound resistor
  • Resistance options from 0.1ฮฉ up to 140ฮฉ
  • Power rating of up to 1000W (on heatsink)
  • Tolerance options between ยฑ1% and ยฑ10.0%
  • TCR of +260 ppm/ยฐC maximum
  • For Non UL Approval see the IRM
  • RARA
  • Metal clad wire wound resistor
  • Resistance options from 0.1ฮฉ up to 175ฮฉ
  • Power rating of up to 1200W (on heatsink)
  • Tolerance options between ยฑ1% and ยฑ10.0%
  • TCR of +260 ppm/ยฐC maximum
  • For Non UL Approval see the IRM
  • RARA
  • Metal clad wire wound resistor
  • Resistance options from 0.3ฮฉ up to 88ฮฉ
  • Power rating of up to 570W (on heatsink)
  • Tolerance options between ยฑ1% and ยฑ10.0%
  • TCR of +260 ppm/ยฐC maximum
  • For Non UL Approval see the IRM
  • RARA
  • Metal clad wire wound resistor
  • Resistance options from 0.45ฮฉ up to 133ฮฉ
  • Power rating of up to 650W (on heatsink)
  • Tolerance options between ยฑ1% and ยฑ10.0%
  • TCR of +260 ppm/ยฐC maximum
  • For Non UL Approval see the IRM
  • RARA
  • Metal clad wire wound resistor
  • Resistance options from 0.6ฮฉ up to 144ฮฉ
  • Power rating of up to 720W (on heatsink)
  • Tolerance options between ยฑ1% and ยฑ10.0%
  • TCR of +260 ppm/ยฐC maximum
  • For Non UL Approval see the IRM
  • RARA
  • Metal clad wire wound resistor
  • Resistance options from 0.7ฮฉ up to 135ฮฉ
  • Power rating of up to 750W (on heatsink)
  • Tolerance options between ยฑ1% and ยฑ10.0%
  • TCR of +260 ppm/ยฐC maximum
  • For Non UL Approval see the IRM