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