Overview
The Allen-Bradley 140M-C2E-B16 is a compact, manually-operated motor protection circuit breaker (MPCB) in the Bulletin 140M series. This 3-pole, C-frame breaker provides branch-circuit short-circuit protection, overload thermal protection, and disconnecting means for manual switching. Rated at 1–1.6A with 65 kAIC interrupt capacity at 480V, it is designed for industrial motor control and branch-circuit protection in systems where reliable, field-serviceable protection is essential.
Key Features
- Adjustable thermal/magnetic trip mechanism for precise protection tuning
- Trip position indicator—separate handle position confirms a trip has occurred
- Short-circuit trip indication identifies fault conditions quickly, minimizing downtime
- Front-mount auxiliary contacts (optional) require no additional panel space
- DIN rail mounting (35 mm) for compact integration into control panels
- Manual on/off handle for local disconnect and load switching
Technical Specifications
- Part Number: 140M-C2E-B16
- Rated Current: 1.6 A
- Trip Range: 1.0–1.6 A (adjustable thermal/magnetic)
- Frame Size: C, 32 A
- Poles: 3-pole
- Voltage Rating: 600 V AC
- Interrupt Rating (kA): 65 kAIC at 480 V
- Mounting Type: 35 mm DIN Rail
- Motor Power Ratings (AC-3, 400/415 V): 0.55 kW @ 400/415 V, 0.75 kW @ 500 V, 1.1 kW @ 690 V
- Operating Temperature Range: −25 to +60 °C
- Protection Type: Thermal overload + magnetic short-circuit
- Control/Disconnect: Manual switch with mechanical status indication
- Certifications: UL/CSA listed for Type E self-protected combination motor controllers or standalone circuit breaker use
Typical Applications
The 140M-C2E-B16 is commonly used in:
- Small-motor protection circuits (0.25–1.1 kW per phase)
- Group installation motor circuits with multiple motors on a single branch circuit
- Manual motor starters and control enclosures
- Machine tool and process automation panel applications
- Tap-conductor protection in group installations
- OEM equipment requiring compact, field-replaceable motor protection
Compatibility & Replacements
Compatible With
- Bulletin 100-C contactors for Type E self-protected combination motor controller assemblies
- Allen-Bradley manual motor starters (Bulletin 509, 513, 514)
- DIN rail-mount control panels and enclosures
- Standard 35 mm DIN rail systems
- AC-3 motor circuits rated 400–690 V AC, 3-phase
Replaces / Drop-In Replacement For
The 140M-C2E-B16 was discontinued by Rockwell Automation as of February 25, 2022. The engineering replacement is the 140MT-C3E-B16 (Bulletin 140MT series), which offers improved thermal and magnetic coordination. For functional replacement, Rockwell recommends the 140MT-C3E-B16-KN-BX.
Works With
- Standard AC-3 duty motor circuits (IEC 60947-4-1)
- Group installation motor protection per UL/CSA requirements
- Tap-conductor protection applications
- Allen-Bradley Logix platforms for system integration (as standalone protective device)
- Manual or PLC-controlled motor control systems
