Mechanical Interlock

The HUBBELL Unfused Circuit-Lock® Mechanical Interlock Device combines a disconnect switch and pin-and-sleeve receptacle in one unit; rated for specified amperage and voltage with IP67 ingress protection. Rated for 60A and 480V AC, this device includes mechanical interlocking that restricts removal of the plug when energized and operation of the switch unless the plug is engaged. The non-metallic thermoplastic housing offers resistance to impact, moisture, UV exposure, and flammability. Constructed with non-metallic thermoplastic housing; see specifications for material properties. Suitable for both indoor (Type 12) and outdoor (4X/IP67) locations, it meets UL Listed and CSA Certified standards.

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

• Amperage/Voltage Rating: 60A at 480V AC


• Electrical Connection: Pin-and-sleeve type with pressure terminal screws; accommodates #8 AWG to #2 AWG copper wire


• Poles/Wires/Phase: 2 pole, 3 wire; single phase


• Enclosure Material: Thermoplastic VALOX base with stainless steel hardware; red housing color


• Ingress Protection/Moisture Resistance: IP67 rated enclosure. Meets requirements for NEMA Type 4X (outdoor washdown) and Type 12 (indoor dust-tight).


• Mechanical Endurance: Rated for up to 10,000 mechanical cycles / 6,000 electrical cycles


• Circuit Interrupting Capability: Certified for current interruption at full rated current/voltage; withstands dielectric voltage of minimum 3,000V AC


• Lockable Handle: Lockable handle meets OSHA Lockout/Tagout requirements* (*as stated by supplier/certification body if applicable)


• Temperature Range: Operating range -40°C to +75°C continuous temperature.


• Certain Standards Met: UL Listed. CSA Certified. Conforms with IEC mechanical interlock standards.