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Siemens HJXD63B300 3-Pole 300A Molded Case Circuit Breaker

Siemens HJXD63B300 3-pole 300A molded case circuit breaker.

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ManufacturerSiemens

Part numberHJXD63B300

Poles 3

Amperage Rating 300A

Voltage Rating 600V AC

Interrupting Capacity 65kA at 480V

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12-month warranty

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Veteran-owned

CAGE: 9NK75

3-pole configuration 300A continuous current High interrupting capacity Thermal-magnetic trip Robust molded case construction

Product description

The Siemens HJXD63B300 is a robust 3-pole molded case circuit breaker (MCCB) designed for reliable overcurrent protection in industrial and commercial power systems. It features a 300 Ampere rating and a high interrupting capacity, ensuring safety for critical circuits. This breaker is built with a durable molded case for long-term performance in challenging environments.

This MCCB is suitable for main power distribution, feeder protection, and motor control applications in manufacturing facilities, processing plants, and large commercial buildings. Its design ensures dependable operation where high fault currents may occur.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens HJXD63B300 to help you maintain operational efficiency and reduce downtime. We provide quality industrial automation parts to meet your specific needs. Trust Stanlo Automation for your essential circuit breaker requirements.

Technical specifications

Poles	3
Amperage Rating	300A
Voltage Rating	600V AC
Interrupting Capacity	65kA at 480V
Frame Size	630A

Common applications

Industrial power distribution

Motor control

Feeder circuits

Electrical switchgear

Commercial power systems

Compatible systems

Industrial power distribution systems Motor control centers Switchgear applications

Also known as

Siemens HJXD Series breaker HJXD63B300 MCCB 300 Amp Siemens 3-pole breaker

Replaces / compatible with

A reliable replacement for other Siemens HJXD series MCCBs and comparable frame-sized circuit breakers.

Technical note

Expert tip

Ensure proper wire bending space within the enclosure to avoid stressing the connected conductors when installing this breaker.

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Frequently asked questions

What is the frame size of the Siemens HJXD63B300 circuit breaker?

The Siemens HJXD63B300 circuit breaker is built on a 630A frame size. This indicates its physical dimensions and inherent strength, while its specific continuous current rating is 300A.