ESP M1 Series

The ESP M1 Series is a combined Type 1, 2 and 3 tested protector (to BS EN 61643) for use on mains power distribution systems primarily to protect connected electronic equipment from transient overvoltages on the mains supply, e.g. computer, communications or control equipment.

For use at boundaries up to LPZ 0 to protect against flashover (typically the main distribution board location, with multiple metallic services entering) through to LPZ 3 to protect sensitive electronic equipment.

Features & benefits

  • Very low let-through voltage (enhanced protection to IEC/BS EN 62305) between all sets of conductors (phase to neutral, phase to earth, neutral to earth - Full Mode protection)
  • Full mode design capable of handling partial lightning currents as well as allowing continual operation of protected equipment 
  • Repeated protection in lightning intense environments
  • Innovative multiple thermal disconnect technology for safe disconnection from faulty or abnormal supplies (without compromising protective performance)
  • Three way visual indication of protection status and advanced pre-failure warning so you need never be unprotected
  • Remote indication facility allows pre-failure warning to be linked to a building management system, buzzer or light
  • Changeover active volt-free contact enables the protector to be used to warn of phase loss (i.e. power failure, blown fuses etc.)
  • Flashing warning of potentially fatal neutral to earth supply faults (due to incorrect earthing, wiring errors or unbalanced conditions)
  • Robust steel housing
  • Base provides ultra-low inductance earth bond to metal panels
  • Compact size for installation in the power distribution board
  • ESP 120 M1 and ESP 240 M1 have Network Rail Approval PA05/02700 and PA05/01832 respectively. NRS PADS reference 086/000556 (ESP 120 M1) and 086/047149 (ESP 240 M1)
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