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Surge Protective Devices


MEPSP1 Residential Surge Protective Devices

Surge Protective Devices

MEPSPD1 is a type 1 SPD designed for residential applications with electrical systems from 120/240 and 120/208 Volts AC. MEPSPD1 can be installed with load centers of any brand at the service entrance or subpanel locations.

Include MEPSPD1 on your new dwelling units and service upgrade projects to comply with NEC® 2020 Art.230.67.


  • New home construction
  • Home remodeling
  • Home upgrades


  • Versatile design - Installed with load centers of any brand and protect sensitive electronics throughout entire house
  • Code compliant - Industry-standard surge ratings to meet the requirements for new home construction and renovation
  • Contractor friendly - Installation is quick and easy in any usable kockout, without taking up breaker spaces
  • Easy diagnostics - LED light indicated the operational status of the SPD, letting you know when it is time to replace the SPD

Key Specs

  • 36kA per phase protection
  • Type 1
  • 120/240V & 120/208V AC
  • 10k Nominal discharge
  • 50-60 Hz Operating frequency

Certification & Standards

UL listed: UL 1449 5th Edition 2021


  • Product name: MESPD1 Residential Surge Protective Devices
  • Series: Residential SPDs
  • Model year: 2022
  • Enclosure type: Polycarbonate NEMA 4X
  • Dimensions: 4.25" x 2.41" x 2.75"
  • Weight: 0.46 lbs
  • Installation type: Indoor / Outdoor
  • Mounting method: Flush / Flange / Through-hole