Overview
The Cooper B-Line PB3 Type 12 standard pushbutton enclosure is a proven operator control solution for general industrial environments. The Cooper B-Line PB3 features a 3-hole configuration suitable for vertical or custom mounting arrangements. Rated NEMA 12/13 and IP65, this enclosure protects pushbutton controls and indicator lights from dust, moisture, and mechanical damage in manufacturing floors, pulp and paper plants, food processing, and machine tool applications.
Key Features
- NEMA 12/13 and IP65 rated — Protects against dust ingress and moisture splash-back in non-hazardous locations
- 3-hole configuration — Accommodates standard 22.5 mm (7/8″) or 30.5 mm (1-3/16″) pushbuttons with flexible layout options
- Concealed, detachable hinges — Allows quick cover removal for maintenance and wiring changes without tools
- Multiple finish options — Available in ANSI 61 gray polyester painted steel or Type 304/316L stainless steel
- External mounting feet — Secures enclosure directly to machinery or control panel via wall mounting
- UL 508 and CSA certified — Meets North American safety and construction standards
Technical Specifications
Cooper B-Line designs the PB3 for standard 22.5 mm and 30.5 mm hole diameter pushbutton operators. Dimensions vary by configuration; the standard vertical single-column PB3 measures approximately 6.25″ W × 7.25″ H × 3″ D (depth varies by internal component placement). All enclosures ship with a phosphate undercoat and polyester powder finish or brushed stainless surface. Cover removal is tool-free via detachable hinge design, and external mounting feet are pre-installed for direct surface mounting.
Typical Applications
The PB3 is widely deployed in:
- Machine tool start/stop and emergency stop control panels
- Conveyor and material handling system operator controls
- Pump and motor starter enclosures
- Printing press and packaging machine control stations
- Water treatment and HVAC equipment operator interfaces
Compatibility & Replacements
The PB3 accepts standard IEC 60947-5-5 compliant pushbutton operators and indicator lights. When upgrading or troubleshooting, compare hole count, hole diameter (22.5 mm vs. 30.5 mm), and material finish against your original specification. Related Cooper B-Line models include the PV3 (painted 3-hole), PB1 (single hole), and PB6/PB9 (larger multi-hole configurations). Consult the factory or a distributor for custom hole layouts or special finishes beyond standard options.
