Description

A coil spike suppression diode is a protection device across the contactor coil. Energizing the contactor coil creates a magnetic field that forces the solenoid arm to engage the contacts. When the contactor is turned off, the magnetic field collapses causing a back “voltage spike” that can damage the controller. The diode safely suppresses this energy.

Note: Pre-Charge Resisters and Coil Spike Suppression Diodes are required with all Alltrax controllers but are not used with Curtis AC controllers or Sevcon controllers

Specifications

Diode: 1N5408
Contactor Size: 200A and up
Diode Current Rating (continuous): 3 Amp

Installation



The Diode goes across the contactor coil with the band towards the positive side of the coil.