Cutler-Hammer MP40KF100-3 Circuit Breaker, 100A, 3-Pole

The Cutler-Hammer MP40KF100-3 Circuit Breaker is built for demanding industrial environments, delivering reliable overcurrent protection for three-phase systems. With a 100 A rating and three poles, this breaker is purpose-built for service, maintenance, and replacement projects within the MP40 Twin Mount family.

Why this breaker stands out

• Three-pole protection ensures balanced guarding of all phases in your three-phase distribution, reducing risk of uneven load and electrical faults.
• 100 A continuous rating suits medium-to-large industrial loads, making it ideal for feeders, main distribution circuits, and equipment lines.
• MP40 Twin Mount compatibility is designed for seamless integration with the MP40 series panels, simplifying upgrades and replacements without rewiring or panel reconfiguration.
• Part-number driven fit—verify compatibility quickly using the MP40KF100-3 designation, helping you minimize downtime during installations and maintenance.
• Reliable industrial performance—engineered for consistent tripping characteristics in rugged environments, protecting wiring, motors, and connected equipment from overloads and faults.

To ensure a correct fit, always verify the part number MP40KF100-3 matches your application requirements. If you need guidance on compatibility, send us a message and our team will help confirm suitability and pairing with your MP40 Twin Mount setup.

Practical applications and scenarios

Ideal for manufacturers, processing facilities, and facilities teams tackling panel upgrades or new installations that rely on robust three-phase protection. Use cases include:

• Upgrading legacy panels to modern overcurrent protection in industrial plants
• Replacing worn or failed breakers in three-phase motor controller centers
• Adding protection blocks in distribution panels for conveyors, pumps, and processing equipment
• Maintenance projects where minimal system disruption and fast compatibility are critical

What problems does it solve? It provides clear, predictable protection for three-phase circuits up to 100 A, streamlines replacements within the MP40 ecosystem, and helps reduce downtime during panel maintenance or expansion. By aligning with the MP40 Twin Mount architecture, it supports modular, scalable protection blocks that adapt as your facility’s electrical needs change.

Care, installation notes, and tips

• Follow OEM installation procedures and verify electrical ratings align with your system design before integrating the MP40KF100-3.
• Keep a stock of MP40-series breakers to expedite repairs and minimize equipment downtime during routine maintenance.
• Use the part number MP40KF100-3 as a quick reference during audits, replacements, or panel upgrades to ensure you’re selecting the correct device.

Ready to upgrade or complete your MP40 protection block? The MP40KF100-3 Circuit Breaker offers dependable three-phase protection with a straightforward path to compatibility within Cutler-Hammer’s MP40 Twin Mount lineup, helping you keep industrial operations safe, compliant, and uninterrupted.