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Siemens HJ63F400 3-Pole 400A Molded Case Circuit Breaker

Siemens HJ63F400 3-pole 400A molded case circuit breaker.

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ManufacturerSiemens

Part numberHJ63F400

Poles 3

Amperage Rating 400A

Voltage Rating 600V AC

Interrupting Capacity 35kA at 480V

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12-month warranty

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Veteran-owned

CAGE: 9NK75

3-pole configuration 400A continuous current High interrupting capacity Thermal-magnetic trip Robust molded case construction

Product description

The Siemens HJ63F400 is a high-performance 3-pole molded case circuit breaker (MCCB) designed for robust overcurrent protection in demanding electrical systems. It features a 400 Ampere rating and a significant interrupting capacity, ensuring safety and reliability for large industrial power distribution. Built with a durable molded case, it's designed for challenging environments.

This MCCB is ideal for main distribution feeders, large motor circuits, and substations where high current handling and reliable fault protection are paramount. It is commonly deployed in manufacturing plants, utility facilities, and large commercial complexes.

Stanlo Automation, a veteran-owned surplus distributor, is your trusted partner for industrial automation components. We supply the Siemens HJ63F400 to help you maintain operational continuity and reduce maintenance costs. Rely on Stanlo Automation for your critical circuit breaker needs.

Technical specifications

Poles	3
Amperage Rating	400A
Voltage Rating	600V AC
Interrupting Capacity	35kA at 480V
Frame Size	630A

Common applications

Industrial power distribution

High-current feeders

Motor control

Substations

Electrical switchgear

Compatible systems

Industrial power distribution systems High-capacity switchgear Motor control centers

Also known as

Siemens HJ Series breaker HJ63F400 MCCB 400 Amp Siemens 3-pole breaker

Replaces / compatible with

Designed to replace older Siemens HJ series MCCBs and other circuit breakers with similar frame and performance specifications.

Technical note

Expert tip

Ensure proper ventilation around the breaker, especially when installed in an enclosure, to maintain optimal operating temperatures.

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Frequently asked questions

What is the interrupting capacity of the Siemens HJ63F400 circuit breaker?

The Siemens HJ63F400 molded case circuit breaker has an interrupting capacity of 35kA at 480V AC. This capacity is crucial for safely interrupting fault currents in high-power industrial applications.