Overview
The Allen-Bradley 140M-C2E-B25 is a compact motor protection circuit breaker (MPCB) from the Bulletin 140M family, engineered for precise overload and short-circuit protection of three-phase motors. With an adjustable setting range of 1.6–2.5 A and a compact Frame C design, it offers dependable safeguarding of small motors in industrial applications. The Allen Bradley 140M-C2E-B25 is a 3 phase thermal-magnetic motor protective device incorporating adjustable bimetal trips for motor overload protections and magnetic trips to de-energize the motor circuit in case of a short circuit.
Key Features
- Adjustable 1.6-2.5A trip range with Class 10 overload protection
- Standard Magnetic Trip fixed at 13 × Ie for consistent short-circuit response
- DIN rail mountable Frame C design for compact control panel integration
- UL 508 Manual Motor Controller rated with 480V 65kA and 600V 30kA short-circuit capacity
- Three-pole configuration for three-phase motor circuit protection
- Manual on/off control with integral disconnect function
Technical Specifications
- Adjustable Overload Range: 1.6–2.5A
- Magnetic Trip Setting: Fixed at 13 × Ie
- Number of Poles: 3
- Frame Size: C
- Trip Class: Class 10
- Short Circuit Rating (480V AC): 65 kA
- Short Circuit Rating (600V AC): 30 kA
- UL Listing: UL 508 Manual Motor Controller
- Mounting: DIN rail
- Mechanism: Thermal-magnetic (bimetal and electromagnetic)
- Voltage Ratings: 480V AC, 600V AC
Typical Applications
The 140M-C2E-B25 is suited for:
- Small three-phase motor branch circuits in industrial facilities
- HVAC and pump motor protection in commercial buildings
- Manual motor control stations requiring NEC-compliant branch-circuit protection
- OEM equipment panels where compact motor starters are required
- Retrofit installations replacing worn or trip-sensitive overload relays
Compatibility & Replacements
Compatible With
- Bulletin 140M motor starter contactors (manual and magnetic)
- Three-phase AC power systems rated 480V or 600V
- Standard industrial control panel DIN rail assemblies
- Manual motor control circuits complying with UL 508 and NEC Article 430
Replaces / Drop-In Replacement For
- Functional replacement product: 140MT-C3E-B25-KN-CX (as of March 03, 2022 discontinuation)
Works With
- Allen-Bradley Bulletin 140M motor starters and contactors
- Manual motor control stations and disconnects
- Standard three-phase AC induction motors
- Industrial control logic relays and PLC input circuits
