MASTER Lock 491B Circuit Breaker Lockout Device

The MASTER Lock 491B is a circuit breaker lockout device designed to prevent accidental re-energization of electrical panels during maintenance, sourced direct from Korea.

Key features

Electricians and facility maintenance crews use this type of lockout device as part of LOTO (lockout/tagout) procedures to keep workers safe while servicing live electrical systems

168-1237

MPN: 491B | 491B

Door Locks & KeysMASTER Lock

1 product code available in this family

Sourced direct from KoreaExport-ready supplyCompetitive pricing

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MASTER Lock 491B Circuit Breaker Lockout Device

Brand MASTER Lock·Door Locks & Keys

Available part numbers (1)

168-1237

How to order

Send the MASTER Lock part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.