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Siemens 5SJ4230-7HG42 2-Pole C-Curve Circuit Breaker

Siemens 5SJ4230-7HG42 2-Pole, 30A, C-Curve Miniature Circuit Breaker.

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ManufacturerSiemens

Part number5SJ4230-7HG42

Number of poles 2

Rated current 30 A

Tripping characteristic C

Breaking capacity 10 kA

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12-month warranty

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Veteran-owned

CAGE: 9NK75

2-pole protection C-curve tripping 10kA short-circuit rating UL 489 certified Compact design Reliable overcurrent protection

Product description

The Siemens 5SJ4230-7HG42 is a 2-pole miniature circuit breaker designed for reliable overcurrent protection. It features a C-curve tripping characteristic, a rated current of 30A, and a short-circuit breaking capacity of 10kA. This breaker is compliant with UL 489 standards for 480Y/277V applications.

Ideal for industrial and commercial applications, this circuit breaker provides essential protection for electrical circuits in machinery, control panels, and building installations. It safeguards against short circuits and overloads, ensuring operational safety and preventing equipment damage.

Stanlo Automation, a veteran-owned business, offers a wide selection of industrial surplus parts, including Siemens circuit breakers. We provide quality components with fast shipping and reliable service, ensuring you get the parts you need to keep your operations running smoothly.

Technical specifications

Number of poles	2
Rated current	30 A
Tripping characteristic	C
Breaking capacity	10 kA
Voltage rating	480Y/277V AC
Standard	UL 489

Common applications

Industrial control panels

Motor protection

Building electrical systems

Machinery safety

Power distribution

OEM equipment

Compatible systems

Standard DIN rail mounting systems Siemens 5SJ4 series accessories

Also known as

Siemens 5SJ4, Siemens miniature circuit breaker, 5SJ4 30A

Replaces / compatible with

Compatible with Siemens 5SJ4 Series accessories and related components.

Technical note

Expert tip

Ensure proper terminal torque is applied during installation to maintain electrical integrity and prevent overheating.

What happens next?

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Frequently asked questions

What is the voltage rating for the Siemens 5SJ4230-7HG42 circuit breaker?

The Siemens 5SJ4230-7HG42 circuit breaker is rated for UL 489 applications at 480Y/277V. This makes it suitable for use in various industrial and commercial electrical systems.