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Transient Voltage Surge Suppressor

LM Series

transient voltage regulatorThe Most Advanced, Cost-effective product line in the industry

The LM is a surge protective device (SPD) that offers continuous protection from damaging transients and electrical line noise. The LM utilizes patented circuitry to monitor the status of all protection modes, including neutral to ground. Should protection be unavailable in any mode, the green LED will be extinguished, and the red LED will be illuminated. In addition, high isolation form C dry contacts provide for remote monitoring of suppression system failure, under voltage, and phase and power loss. LM patented suppression integrity monitoring indicates failure for both shorted or opened suppression components.

The LM Series can be a facility-wide product family and may be installed from service entrances to distribution panels to branch panels.

  • Commercial
  • Institutional facilities
  • Industrial plants
  • Any facility that has an environment with electronics-based equipment


Low and Medium Powersure


Surge Suppression Solutions for Distribution panels

Electric power line disturbances such as high voltage transients can disrupt or damage sensitive  electronic equipment – causing a major loss in productivity and money.  Exposure surge suppression systems – the reliable way to keep these power problems from getting into you facility in the first place.

PowerSure Panel Low Exposure – Designed for use on branch panels or equipment in low exposure locations.  Available  up to 100kA/phase surge current capacity.  LED status indication and Form C contacts for remote indication are standard.

PowerSure Panel Medium Exposure – Offers protection from transients on distribution panels or any medium exposure location.  Available in 100kA/phase and 160kA/phase, all mode and two mode protection, small footprints, NEMA 12 enclosure, silver link fusing with thermal protection, all voltage and phase configurations, 5-year warranty.

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transient voltage regulatorAccuvar

The AccuVar Series is a multi-phase, multi-mode distribution panel mounted transient voltage surge suppressor (TVSS) that offers continuous protection from damaging transients and electrical line noise.

Features & Benefits

  • Easy, safe, and maintenance-free operation.
  • Repeatable surge current capability for long life.
  • Easily retrofits on existing panel boards.
  • Compact Module attaches directly to breaker panel.


  • 7”L x 4.25”W x 4”D


  • 6 lb. 6 oz.
  • Patented AccuVar Detection Circuitry monitors all modes of failure, including neutral to ground.
  • ANSI/IEEE C62.41 Category A, B, & C3 Compatible ANSI/IEEE C62.11, C62.45 Tested.
  • Tested in accordance with ANSI/IEEE test standards for secondary arrestors and TVSS.
  • UL Tested for outdoor use suitability.
  • High-isolation dry contacts for remote system integrity monitoring.
  • UL 1449, UL 1283, and CSA Listed, CE available.
  • 10-Year Warranty.
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