Overview
The Mennekes ME 420HMI7-M2 is a switched and interlocked receptacle designed for industrial power distribution. This pin-and-sleeve connector combines mechanical interlock with electrical switching in a compact, NEMA 4X thermoplastic enclosure. Built to UL and IEC standards, it provides safe disconnection and prevents accidental contact during maintenance and equipment changeover in three-phase motor circuits.
Key Features
- Switched and interlocked design prevents connection/disconnection under load
- Non-fusible configuration for use with upstream protection devices
- NEMA Type 4X thermoplastic enclosure with UV-stabilized material
- UL94 5V flame rating for enhanced safety
- Compact form factor for space-constrained installations
- Pin-and-sleeve construction ensures rugged mating alignment
Technical Specifications
- Amperage Rating: 20A
- Voltage Rating: 480VAC, 3-Phase
- Horsepower Rating: 10 HP
- Configuration: 3 Pole, 4 Wire
- Enclosure Type: NEMA Type 4X / IP 66
- Material: Thermoplastic (UV-stabilized)
- Standards Compliance: UL 508, UL 1682, UL 1686, IEC 60309-1, IEC 60309-2, cUL to CSA 22.2 No. 4-M91
- SCCR Rating: 65 kA RMS symmetrical (with Class J fuse protection)
- Endurance: 10,000 electrical cycles; 15,000 mechanical cycles
- Connection Type: Screw terminals
- Series: HMI (Switched and Interlocked Receptacles)
Typical Applications
The ME 420HMI7-M2 is commonly used in:
- Three-phase motor disconnect and control circuits
- Temporary power distribution for portable equipment
- Maintenance and service disconnect points
- Industrial machinery and production equipment interlocking
- Outdoor and washdown environments requiring NEMA 4X protection
Compatibility & Replacements
Compatible With
- Standard pin-and-sleeve plug receptacles (IEC 60309-2 compliant)
- Three-phase 480VAC power distribution systems
- Motor control centers and disconnect switch circuits
- Industrial safety interlock systems
- Systems requiring UL 508 motor control certification
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The ME 420HMI7-M2 may serve as a direct replacement for other Mennekes HMI-series 20A 480VAC receptacles with identical pin configurations and footprints.
Works With
- Mennekes mating plugs (ME 420P7W and compatible pin-and-sleeve plugs)
- Class J fused disconnect switches
- Standard three-phase motor starters and soft-start drives
- Thermal overload relays and motor protection circuits
- Industrial control systems using pin-and-sleeve connectors
