Switchboard Accessories

EI-MSB10-400 Surge Protector


  • Protect Critical Substation Equipment
  • Multi-Stage Protection Scheme
  • Supports 2-Wire and 4-Wire RS485
  • Fully Compliant with IEC61643-1 and EN61643-11 (Class 2 or Class 3 Test)
  • Internal Thermal Fusing
  • Unit Replacement LED Alert


Designed specifically to protect substation equipment from dangerous spikes and transients, the EI-MSB10-400 absorbs the event utilizing a multi-stage transient suppression scheme, before critical equipment is reached. This unit is very low cost and is essential to significantly improve equipment reliability.

The EI-MSB10-400 surge protector is designed to protect sensitive equipment from the damaging effects of lightning strikes and/or industrial switching surges in single phase AC networks up to 320VAC (L-N / L-G), and DC networks up to 400 VDC.

The EI-MSB10-400 is connected by wires in parallel with the network to be protected. It can be easily mounted on a wall or plate with self-adhesive tape.

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