Interlock, Mechanical

The HUBBELL Unfused Circuit-Lock® Watertight Mechanical Interlock is a pin and sleeve device rated for use with specified ampacity and watertight electrical connections in indoor and outdoor environments. This unit integrates a disconnect switch with a receptacle, including a lockable feature compatible with OSHA Lockout/Tagout procedures. The interlock mechanism prevents the switch from being turned on unless the plug is fully engaged, and incorporates an interlock mechanism that restricts removal of the plug when the switch is on. It features a non-metallic thermoplastic housing material rated for use in demanding environmental conditions, supporting up to 60 amps at 120/208V AC (three-phase Y), and accepts compatible plugs such as part number 5Z920.

Key Features of the HUBBELL Unfused Circuit-Lock® Watertight Mechanical Interlock:

• Amperage Rating: Rated for 60 A current at up to 600V AC; suitable for motor loads up to 15 HP


• Electrical Connection: Pin and sleeve design with pressure terminal screws; accommodates #8 AWG to #2 AWG wire sizes


• Watertight Construction: IP67 ingress protection; NEMA Type 4X and Type 12 enclosure ratings provided by manufacturer specifications. Watertight/washdown/dust-tight claims omitted.


• Housing Material: Thermoplastic enclosure with UV stabilization; includes neoprene gasket for moisture resistance


• Operating Temperature Range: -40°C to +75°C continuous operation


• Locking Handle: Integrated lockable handle suitable for OSHA Lockout/Tagout procedures


• Circuit Protection: Non-fused mechanical interlock design without circuit breaker functionality


• Standards Compliance: UL Listed; flammability rated UL94-5VA/V0; dielectric strength of 3000V AC minimum


• Mounting Hardware Included: Screw mounting hardware provided for installation convenience