M-0388 Syncrocloser® Check Relay

Please Note: As of 12/31/2022, Beckwith Electric will no longer be manufacturing the M-0388 Syncrocloser® Check Relay.

  • Beckwith will accept orders for these products until 8/31/2022 and all products ordered must ship before 12/31/2022.
  • Please contact us to request a quote and place orders.
  • This product may have an alternative replacement product, M-7651A, depending on your application needs. Please contact us for details.


The M-0388 Syncrocloser® Check Relay is used as a permissive relay for secure reclosing of a circuit breaker by verifying that voltage and phase angle conditions are within pre-set limits before allowing the breaker to close. It is a panel-mounted, direct mechanical replacement for G.E. IJS and SLJ, and Westinghouse CVE relays.

  • Panel mounted G.E. IJS and SLJ or Westinghouse CVE replacement.
  • Accurate, independent phase, time and voltage functions
  • Transducer and status outputs are standard features
  • Modular construction allows cards to be removed while unit is installed
  • Optional unit with voltage checking and dead line and dead bus closure capabilities can be installed at any time.
  • Does not require a separate power source
  • Complete test and checkout from front panel
  • 20A output relay contacts open 0.9A inductive as 125V dc
  • Temperature range of -40° to +80° C