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The KD3400 – EATON 3P 400A 600V Moulded Case Breaker is designed for reliable protection and control in industrial applications. With a robust construction and three-pole configuration, it safely manages heavy loads while providing excellent circuit interruption efficiency. Ideal for high-demand environments, this breaker ensures optimal performance and safety.
The KD3400 is a bolt-on KD-frame MCCB designed for Eaton/Cutler-Hammer industrial panelboards and switchboards that are rated for the KD frame. It is not suitable for residential loadcentres. Because specific panelboard compatibility depends on the bus rating and frame acceptance of your installation, we recommend contacting us with your panelboard model so we can confirm fit before ordering.
Availability can vary depending on production status and regional stock. Northern Breaker Group specialises in obsolete and hard-to-find breakers, so even if the KD3400 is no longer in regular distribution, we maintain access to verified surplus and reconditioned stock. Contact our Calgary, Edmonton, or Vancouver counters for current availability and lead times.
Yes — at 600 V AC with an 18 kA interrupting rating, the KD3400 is well suited for branch-circuit and feeder protection in industrial motor-control and distribution applications. However, if you require a motor-circuit protector (MCP) with an adjustable magnetic-only trip, a dedicated MCP-rated device may be more appropriate. Contact us to discuss your specific load requirements and we'll help confirm the right product.
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