Cutler-Hammer KS320400A - 400A, 3-Pole, Circuit Breaker

Cutler-Hammer KS320400A — a rugged 400A, 3-pole circuit breaker engineered for industrial-grade protection in distribution panels and motor control centers.

Designed for three-phase power, this 3-pole breaker provides dependable overcurrent protection for panelboards, switchboards, and control panels in demanding environments. With a 400A rating, it’s built to handle high-current feeders and large motor loads common in factories, processing plants, and commercial facilities.

• Current rating: 400A
• Poles: 3-Pole for three-phase systems
• Configuration: Circuit Breaker suitable for panelboards, switchboards, and control panels
• Applications: Industrial, commercial, and OEM installations requiring reliable protection
• Reliability: Designed for safe operation in distribution panels and motor control centers

Use cases and benefits:

• Protect large feeders and motors from overcurrents and short circuits, reducing equipment damage and downtime
• Integrate seamlessly into existing Cutler-Hammer KS-series assemblies and distribution schemes
• Offer predictable trip performance that helps maintain system stability during fault events
• Support upgrades to 3-phase electrical infrastructure in manufacturing lines, HVAC systems, and industrial automation

Who benefits? Maintenance teams, electrical engineers, and OEM manufacturers who need a dependable, high-capacity circuit breaker that can stand up to continuous operation in challenging environments.

Notes on selection and integration:

• Match the 400A rating and 3-pole configuration to your three-phase distribution or motor control applications
• Plan for proper enclosure, wiring, and termination practices appropriate for industrial panels

Invest in the Cutler-Hammer KS320400A to protect your critical loads, simplify maintenance, and extend the life of your electrical distribution system.