Surge Protective Devices (SPDs) are designed to protect against transient surge conditions. Lighting and utility power anomalies only account for 20% of transient surges, while the other 80% are produced internally in a facility.

OVRHTE

Sub and Mid-Level Distribution – 1,000A and below

  • UL Listed 1449 4th edition for Type 2 SPD applications.
  • Protects facilities and equipment against the harmful effects of lightning strikes and internally generated electrical transients.
  • Includes pre-wired pigtail conductors to streamline installation.
  • Features internal copper bus conduction path to minimize system impedances, lowering clamping voltage and increasing protection

OVRHT3C

Sub Distribution and Panelboard – 400A and below

  • UL Listed 1449 4th edition for Type 1 SPD applications.
  • 50kA per phase protection.
  • Individual thermally fused and protected MOVs.
  • Includes pre-wired pigtail conductors.
  • Multiple MOVs per phase eliminates single-point failure.

OVRHLD

Equipment Level Protection – 100A and below

  • UL Listed 1449 4th edition for Type 1 SPD applications.
  • Multiple Metal Oxide Varistors (MOVs), with individual current fusing and thermal disconnects for each MOV.
  • LED indicates proper functioning of L-N MOVs.

OVRHS3U

Equipment Level Protection – 100A and below

  • UL Listed 1449 4th edition for Type 1 SPD applications.
  • Multiple Metal Oxide Varistors (MOVs), with individual current fusing and thermal disconnects for each MOV.
  • LED indicates proper functioning of L-N MOVs.

OVRHSP/OVRHSR

Facility Wide Protection – 4,000A and below

  • UL Listed 1449 4th edition for Type 1 and Type 2 SPD applications.
  • Fail-safe design with individually fused Metal Oxide Varistors (MOVs) eliminating single point failure, protecting against both overcurrent and overvoltage events.
  • 200kAIC short circuit rating permits direct bus connection to most electrical services.
  • Low let through voltage ensured by the lowest possible impedance path to ground and equal current sharing during surge events.
  • All weather sealed, powder-coated NEMA 4/IP65 housing is designed for any orientation and indoor/outdoor applications.
  • 10-year standard warranty

OVRHT3B

Sub Distribution and Panelboard – 400A and below

  • UL Listed 1449 4th edition for Type 1 SPD applications.
  • 50kA per phase protection.
  • Individual thermally fused and protected MOVs.
  • Includes pre-wired pigtail conductors.
  • Multiple MOVs per phase eliminates single point failure.

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