Overview
The Allen-Bradley 140M-C-W544 is a three-phase compact busbar engineered to extend the terminal capacity of 140M-C and 140M-D motor protection circuit breakers (MPCBs). Specified in Rockwell Automation’s official technical documentation, this busbar provides four connections with 54 mm spacing and supports side-mounted auxiliary contacts. The 140M-C-W544 is rated for a maximum continuous current of 64 A and delivers reliable power distribution in industrial motor control applications.
Key Features
- Three-phase compact busbar — optimized for 32 A motor protection circuit breakers up to 64 A continuous current capacity
- 4-connection configuration — provides expandable terminal points for multiple motor or load circuits
- 54 mm terminal spacing — standard pitch compatible with 140M-C and 140M-D frames
- Side-mounted auxiliary contact support — integrates with auxiliary signaling and control circuits
- Industrial-grade construction — UL, CSA, CE, and CCC certified for global compliance
- New in box condition — ready for immediate installation and deployment
Technical Specifications
The 140M-C-W544 meets stringent industrial standards for motor circuit protection and is fully compatible with Rockwell Automation’s 140M motor protection ecosystem. Terminal design ensures secure, low-impedance connections while the compact form factor allows integration into space-constrained control enclosures.
Typical Applications
- Multi-motor industrial control panels requiring branch circuit expansion
- Food and beverage production lines with distributed motor circuits
- Mining and mineral processing equipment with motor protection requirements
- Water treatment and wastewater facilities with multiple pump motor starters
- HVAC systems in commercial and industrial buildings
- Manufacturing assembly lines requiring motor starter redundancy and flexibility
Compatibility & Replacements
Compatible With
- Allen-Bradley 140M-C motor protection circuit breakers
- Allen-Bradley 140M-D motor protection circuit breakers
- Side-mounted auxiliary contact modules for 140M series
- Manual motor starters and self-protected combination motor controllers
Replaces / Drop-In Replacement For
The 140M-C-W544 is the 4-connection variant in the 140M compact busbar series. Related models in the same series include the 140M-C-W542N (2-connection), 140M-C-W543N (3-connection), and 140M-C-W545N (5-connection). The 140M-C-W544N (with terminal cover) is an alternative variant.
Works With
- Rockwell Automation motor protection circuit breaker platforms
- Manual motor starter and combination motor controller assemblies
- Type E self-protected combination motor controller configurations
- IEC combination starters (Bulletin 103T, 107T) when integrated with Bulletin 100-C contactors and Bulletin 193 overload relays
