Overview
The Hoffman E4SPBX pushbutton enclosure is an extra-deep, Type 12/13 industrial control housing manufactured by nVent Hoffman. This enclosure accommodates four 30.5-mm pushbuttons and switches, with 4.75-inch depth to support additional contact blocks and control logic—ideal for complex operator panels and pendant stations.
Key Features
- Continuous seam welding — Ground-smooth seams ensure structural integrity and durability
- Oil-resistant gasket — Factory-stamped 4-way pushbutton holes; protects internal components
- Captivated cover screws — Thread into sealed wells; prevent corrosion and loss
- Internal detachable hinge — Holds cover open during wiring without permanent alteration
- Bonding provisions — Cover bonding provision and grounding stud on body meet electrical safety codes
- Factory-mounted brackets — External welded-on mounting brackets simplify installation
Technical Specifications
- Material: 16 or 14 gauge steel
- Finish: ANSI 61 polyester powder coat, gray
- Dimensions: 7.25″ H × 6.25″ W × 4.75″ D (184 × 159 × 121 mm)
- Pushbutton holes: 4, factory-stamped for 30.5-mm and 22.5-mm pushbuttons
- Rating: NEMA Type 12, Type 13; IP65 (IEC 60529)
- Certifications: UL 508A Listed, cUL Listed per CSA C22.2 No. 94
- Gasket: Oil-resistant polyurethane
- Cover: Hinged, with captivated screws
- Mounting: Wall-mount via external welded brackets
- Depth: Extra-deep (4.75 inches) for contact block accommodation
Typical Applications
- Industrial operator control panels and pendant stations
- Machine tool start/stop and emergency pushbutton housings
- Production line signal and command interfaces
- HVAC system control enclosures
- Packaging and conveyor control stations
- Hazardous area equipment control housings (indoor Type 12/13 environments)
Compatibility & Replacements
The Hoffman E4SPBX is compatible with standard 30.5-mm and 22.5-mm industrial pushbuttons from all major manufacturers including Allen-Bradley, Siemens, Omron, and Eaton. The factory-stamped 4-way holes accept oil-tight pushbuttons, selector switches, and pilot lights without modification. This enclosure does not include a back panel; rear-mounted components must be field-wired. For larger configurations, consider the Type 4X stainless steel variant (E4PBSS) or lower-hole-count models such as the E1PBX (1-hole) or E2PBSX (2-hole).
