Allen-Bradley 140M-C2E-B40-KN-XM 4A 3-Pole 600 V Circuit Breaker

The Allen-Bradley 140M-C2E-B40-KN-XM 4A 3-Pole 600 V Circuit Breaker is engineered for dependable, precise protection in demanding three-phase applications. With a 4 A current rating and a 600 V maximum voltage, this molded-case breaker from the trusted 140M family guards motors, panels, and control circuits against overloads and short circuits, helping to minimize downtime and equipment wear in industrial environments.

Key specifications at a glance

• Current rating: 4 A
• Poles: 3 (three-phase protection)
• Voltage rating: up to 600 V
• Type: Molded-case circuit breaker (MCCB) from the Allen-Bradley 140M family
• Part number: 140M-C2E-B40-KN-XM

What makes this model stand out

• Precise low-current protection: A 4 A rating provides targeted protection for small motors and auxiliary loads, reducing nuisance trips while guarding equipment against overloads.
• Balanced three-phase safeguarding: With 3 poles, all phases are protected simultaneously, improving performance and safety for three-phase equipment and distribution networks.
• Broad voltage compatibility: Designed for systems up to 600 V, making it suitable for a wide range of industrial power distribution and machinery control panels.
• Proven reliability in a compact footprint: Part of the renowned Allen-Bradley 140M line, known for durable construction and consistent protection in demanding installations.

Ideal applications and use cases

• Control panels that house small three-phase loads, where space is at a premium and precise current protection is essential.
• Motor circuits for light to medium-duty equipment such as conveyors, fans, pumps, and automation devices in manufacturing or facility environments.
• Feeder protection for compact machine enclosures that operate on three-phase power within the 600 V range.
• Upgrading legacy protection in panels that require a reliable, exchangeable component from the 140M family for consistent performance and easy sourcing of replacement parts.

Installation and compatibility notes

When integrating the 140M-C2E-B40-KN-XM into a system, ensure the load current aligns with the 4 A setting and that the enclosure and wiring are rated for three-phase operation at up to 600 V. This model is designed to slot into standard 140M-compatible control panels and works as part of a broader protection strategy that emphasizes safety, reliability, and ease of maintenance. Always consult a qualified electrician or technician to verify electrical ratings, wiring schemes, and panel compatibility before installation.