Power Relays Test - Normally-open Type B

Normally-open type B:


Check for continuity between the terminals.

  • There should be continuity between the No. 1 and No. 3 terminals when power and ground are connected to the No. 2 and No. 4 terminals.
  • There should be no continuity between the No. 1 and No. 3 terminals when power is disconnected.