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Siemens 5SJ4 Circuit Breaker - 5A, C-Curve, 10kA

Siemens 5SJ4 2-pole circuit breaker, 5A, C-curve, 10kA, UL 489.

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ManufacturerSiemens

Part number5SJ4211-7HG42

Poles 2

Rated Current 5A

Tripping Curve C

Breaking Capacity 10kA

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2-pole design C-curve tripping characteristic 10kA breaking capacity UL 489 listed 5A rated current Compact and reliable

Product description

The Siemens 5SJ4211-7HG42 is a 2-pole miniature circuit breaker featuring a C-curve tripping characteristic, suitable for circuits with moderate inrush currents. It has a rated current of 5A and a breaking capacity of 10kA, offering reliable protection against overloads and short circuits. This UL 489 listed breaker is designed for 480Y/277V AC applications.

This circuit breaker is commonly used in residential and commercial electrical systems for protecting circuits with devices like lighting, small appliances, and electronics. Its C-curve characteristic provides a good balance between sensitivity to overloads and tolerance for temporary inrush currents.

Stanlo Automation, a veteran-owned surplus parts distributor, provides the Siemens 5SJ4211-7HG42. We offer dependable access to quality industrial automation components, ensuring your procurement needs are met with efficiency and value.

Technical specifications

Poles	2
Rated Current	5A
Tripping Curve	C
Breaking Capacity	10kA
Voltage Rating	480Y/277V AC
Standard	UL 489

Common applications

Lighting circuits

Outlet circuits

Small appliance protection

Residential panels

Commercial distribution

Compatible systems

480Y/277V AC systems UL 489 compliant electrical installations

Also known as

Siemens 5SJ4 C-curve 5A breaker 5SJ4211-7HG42 breaker Siemens 480V 5A breaker

Replaces / compatible with

This breaker can replace older Siemens 5SJ series models or other UL 489 compliant 2-pole, 5A, C-curve circuit breakers.

Technical note

Expert tip

For circuits with sensitive electronics, a more specialized breaker might be considered, but the C-curve offers general-purpose protection for typical loads.

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Frequently asked questions

What is the purpose of the C-curve in the Siemens 5SJ4211-7HG42 circuit breaker?

The C-curve tripping characteristic of the Siemens 5SJ4211-7HG42 is designed to handle moderate inrush currents, typically 5 to 10 times the rated current. This makes it suitable for circuits with inductive loads like lighting and small motors where brief surges are common.