Overview
The Hoffman E2PBX pushbutton enclosure is an extra-deep industrial pushbutton box manufactured by nVent HOFFMAN. This NEMA 12 / IP65 rated steel enclosure is engineered to mount 30.5-mm and 22.5-mm pushbuttons and switches while accommodating multiple contact blocks for complex control logic. With its robust welded steel construction and gray polyester powder coating, the E2PBX delivers reliable performance in factory, machine tool, and process control applications.
Key Features
- Extra-Deep Design: 4.75-inch (121 mm) depth allows stacking of multiple pushbutton contact blocks for advanced control schemes
- Dual Pushbutton Capacity: Accommodates two 30.5-mm pushbuttons or mixed 30.5-mm and 22.5-mm combinations
- NEMA 12 / IP65 Rating: Protects against dust, water spray, and oil without compromising enclosure integrity
- Ground Smooth Welded Seams: Continuously welded construction eliminates sharp edges and ensures durability
- Internal Hinge Support: Detachable internal hinge holds cover open during wiring for faster installation and troubleshooting
- Standard Gray Finish: ANSI 61 polyester powder-painted interior and exterior prevents corrosion
Technical Specifications
- Overall Dimensions (W×H×D): 6.00 × 4.00 × 4.75 inches (152 × 102 × 121 mm)
- Material: 14-gauge steel with gray ANSI 61 polyester powder paint
- Pushbutton Holes: 2 holes for 30.5-mm pushbuttons
- Mounting Style: Wall mount with angle iron or direct mounting brackets
- Enclosure Type: NEMA 12, NEMA 13
- Protection Rating: IP65 per IEC 60529
- Certifications: UL 508A Listed (File No. E61997), CSA Listed (File No. 42186), CUL Per CSA C22.2 No. 94
- Gasket: High-performance polyurethane gasket (Type 12 standard)
- Hardware: Stainless steel screws for rust resistance
Typical Applications
The Hoffman E2PBX is widely used in industrial machine control, pump control panels, motor starters, emergency stop stations, and general process control systems. Its extra depth makes it ideal for applications requiring multiple contact block combinations or where control logic demands additional switching capacity beyond simple start/stop operations. Common uses include:
- Machine tool control and operator interface stations
- Pump and compressor control enclosures
- Emergency stop (E-stop) and safety logic control
- Manufacturing process startup sequences
- HVAC and facility automation applications
Compatibility & Replacements
The E2PBX is part of nVent HOFFMAN’s PB1 Series Extra-Deep Pushbutton Enclosures, designed to accommodate standard IEC 60947-5-5 compliant pushbuttons. It is compatible with any 30.5-mm industrial pushbutton and switch contact blocks from major manufacturers including Allen-Bradley, Siemens, Eaton, and Omron. For applications requiring shallow mounting or fewer pushbuttons, the E1PBX (single pushbutton) or standard shallow PB enclosures may be suitable alternatives. Direct replacement enclosures in this product family include the E2PBX4 (NEMA 4/IP66 rated) for washdown or outdoor environments.
