Overview
The Allen-Bradley 198-H2 rotary operating mechanism is the genuine OEM handle and actuation assembly for 150-amp Cutler-Hammer/Westinghouse molded-case circuit breakers. Designed to replace worn or damaged handles on EDH, FD, FDB, FBC, HFD, and HMCP frame breakers, the 198-H2 provides smooth, reliable manual operation and positive disconnection in industrial electrical distribution and control applications.
Key Features
- Rotary handle operation for ergonomic, positive control
- Compatible with HMCP, EDH, FD, FDB, FBC, and HFD 150A frame breakers
- UL 489 and CSA certified for safety and code compliance
- Genuine Allen-Bradley component with OEM quality assurance
- Durable construction designed for frequent on/off cycling
- NEMA 1/3/3R/4/4X/12 enclosure rated
Technical Specifications
- Amperage Rating: 150 Amp
- Mechanism Type: Rotary handle
- Compatible Breaker Frames: EDH, FD, FDB, FBC, HFD, HMCP
- NEMA Enclosure Ratings: 1, 3, 3R, 4, 4X, 12
- Certifications: UL 489, CSA, CUL, KC
- Manufacturer: Rockwell Automation / Allen-Bradley
- Standard Compliance: UL 489 (Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures)
Typical Applications
The 198-H2 operating mechanism is used in:
- Main distribution panels and bus duct disconnects
- Motor starter and drive enclosure protection
- Industrial machinery control circuits
- Emergency shutdown systems requiring manual handle operation
- Equipment requiring NEMA 4/4X corrosion-resistant disconnects
Compatibility & Replacements
The 198-H2 is the OEM operating mechanism for Cutler-Hammer/Westinghouse 150-amp EDH, FD, FDB, FBC, HFD, and HMCP frame circuit breakers. It is not interchangeable with the 198-H1 (63A) or 198-H3 (250/400A) mechanisms. Verify your breaker frame designation and amperage before ordering. This is a critical component that must match the original breaker specification to ensure proper operation and safety compliance.
