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Siemens 5SJ4225-8HG42 SENTRON Circuit Breaker | 25A 2-Pole 480Y/277V Type D

Siemens 5SJ4225-8HG42 2-Pole Miniature Circuit Breaker

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ManufacturerSiemens

Part number5SJ4225-8HG42

Poles 2

Current Rating 25A

Voltage Rating 480Y/277V AC

Interrupting Capacity 10kA

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2-pole design 25A current rating 10kA interrupting capacity Type D tripping characteristic 480Y/277V rating UL 489 listed

Product description

The Siemens 5SJ4225-8HG42 is a 2-pole miniature circuit breaker from the SENTRON series, designed for robust branch circuit protection. It operates at 480Y/277V AC with a 25A current rating and features a 10kA interrupting capacity. This breaker is distinguished by its Type D tripping characteristic, making it ideal for circuits with high inrush currents.

Compliant with UL 489 standards, this circuit breaker provides reliable protection against overloads and short circuits in demanding industrial environments. Its compact size and DIN rail mounting ensure easy integration into control panels and electrical cabinets.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 5SJ4225-8HG42. We provide quality surplus industrial automation parts, ensuring you can source necessary components for your maintenance and operational needs with confidence.

Technical specifications

Poles	2
Current Rating	25A
Voltage Rating	480Y/277V AC
Interrupting Capacity	10kA
Tripping Curve	D
Mounting	DIN Rail
Standards	UL 489

Common applications

High inrush load circuits

Industrial automation

Control panels

Electrical distribution

Branch circuit protection

Compatible systems

Designed for standard DIN rail mounting and integration into industrial control panels requiring UL 489 compliant protection for high inrush current loads.

Also known as

Siemens SENTRON 5SJ4225-8HG42 5SJ42258HG42 Siemens 25A Type D breaker

Replaces / compatible with

This circuit breaker is designed for high inrush loads and can replace other Siemens 5SJ4 series breakers with similar Type D characteristics and ratings.

Technical note

Expert tip

The Type D trip characteristic ensures a higher magnetic trip point, making it suitable for loads that have significant temporary inrush currents during startup.

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Frequently asked questions

What applications are best suited for the Siemens 5SJ4225-8HG42 with its Type D curve?

The Siemens 5SJ4225-8HG42, with its Type D tripping curve, is ideal for circuits that experience high inrush currents, such as those powering motors, transformers, or welding equipment, preventing nuisance tripping while ensuring protection.