ITE | CN3B400 | Circuit Breaker | 400A | 3-Pole | 600V | Bolt-On

ITE CN3B400 Circuit Breaker — 400A, 3-Pole, 600V, Bolt-On, engineered for demanding industrial environments, delivers reliable overcurrent protection during maintenance, retrofit, and replacement projects. Built to align with compatible frames, this breaker helps you minimize downtime and keep critical systems running smoothly.

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V
• Mounting: Bolt-On

Why this matters: in high-demand applications, a correctly specified 400A, 3-pole breaker is essential for protecting feeders and large circuits from fault conditions. The CN3B400 is designed to drop into compatible panels with bolt-on mounting, offering secure, rugged protection that stands up to tough industrial environments.

Key benefits and use cases:

• Maintenance and Retrofit: Ideal for replacing aging or failed breakers in existing enclosures where CN3B400 specifications match your panel’s requirements.
• Reliable Replacement: When a part number CN3B400 is identified as your reference, you’re choosing a precise fit that aligns with the panel’s protection strategy.
• Industrial and Commercial Applications: Suitable for heavy-load feeders, manufacturing lines, data centers, and other facilities that demand robust 400A, 3-pole, 600V protection.
• Durable, Secure Mounting: Bolt-On design provides solid mechanical integrity in environments where vibration or handling stress is a concern.

How to ensure the best fit:

• Verify compatibility by the part number: CN3B400 is the most reliable reference for matching this breaker to your enclosure.
• Confirm ratings and frame compatibility: Double-check that 400A, 3-pole, 600V specifications meet your panel and the protected circuit requirements before ordering.
• Professional installation: Have a qualified electrician perform the replacement or retrofit to maintain safety and ensure proper electrical clearance and torque per your panel’s guidelines.

Practical insights for planning:

• Maintain a dedicated spare CN3B400 on hand for just-in-time replacements and reduced downtime.
• Document the exact CN3B400 reference in your maintenance logs to simplify future ordering and compatibility checks.
• When retrofitting, assess surrounding components and bus bar connections to confirm the bolt-on interface remains unobstructed and accessible for service。

Whether you’re upgrading an older panel, refreshing a critical service point, or stocking a reliable spare for future maintenance, the ITE CN3B400 delivers the precise protection you need—efficiently, reliably, and with clear compatibility guidance rooted in the part number reference.