Master Lock Zenex Black Non-conductive Door Lock

Non-conductive lockout padlock

This padlock uses a thermoplastic body and plastic shackle to eliminate electrical conductivity. It is built for lockout-tagout procedures where metal components would create a shock hazard. The keyed-different cylinder ensures each lock in a set requires its own unique key. Workers needing personal isolation points on energised equipment will find it suited to that role.

Thermoplastic body with plastic shackle

The 13/16 inch horizontal and 1 1/2 inch vertical clearances allow the shackle to fit standard lockout hasps and breaker toggles. A non-removable key design prevents the key from being withdrawn while the shackle remains open. This reduces the chance of a lock being left unsecured on an isolation point. The lightweight plastic construction also avoids damage to painted or coated surfaces during daily use.

Limits of plastic shackle strength

The plastic shackle resists corrosion and chemicals but lacks the shear strength of hardened steel. It is not intended for high-security perimeter gates or heavy-duty chain applications. Buyers who need cut resistance for outdoor asset protection should select a metal-shackle alternative. The keyed-different format also means this single unit cannot be integrated into an existing keyed-alike master system.