Description
The Appleton EFSR-2023 is a 20 Amp, 1 HP, interlocked receptacle designed for hazardous and demanding industrial environments. Engineered to meet NEC and IEC requirements for Class I and II hazardous locations, it combines safety, durability, and performance. The interlock mechanism ensures that the plug cannot be inserted or removed unless the switch is in the “OFF” position, reducing the risk of arcing in explosive atmospheres.

Ideal for applications in:
- Chemical plants
- Refineries
- Offshore platforms
- Grain silos
- Any Class I, Division 1 or 2, or Class II, Division 1 or 2 location
Key Features:
- Interlocked Design: Prevents connection/disconnection under load
- Heavy-Duty Construction: Cast aluminum with epoxy powder coating for corrosion resistance
- Weatherproof and Watertight: Suitable for harsh outdoor conditions
- Explosionproof Rating: Meets or exceeds NEC and CEC for hazardous environments
Specifications :
Attribute | Detail |
---|---|
Model | EFSR-2023 |
Manufacturer | Appleton™ (by Emerson) |
Current Rating | 20 Amps |
Horsepower Rating | 1 HP |
Voltage | 125-250V AC (typically 2-pole, 3-wire) |
Configuration | 2-Pole, 3-Wire Grounding |
Receptacle Type | Interlocked |
Material | Copper-free aluminum housing |
Enclosure Rating | NEMA 3, 7BCD, 9EFG |
Environment Ratings | Explosionproof, Dust-ignitionproof |
Mounting | Surface mount |
Standards | UL Listed, CSA Certified |
