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Siemens 5SJ4103-8HG42 1-Pole D-Curve Circuit Breaker — 3A, 10kA

Siemens 5SJ4103-8HG42 1-pole D-curve circuit breaker, 3A, 10kA.

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ManufacturerSiemens

Part number5SJ4103-8HG42

Poles 1

Current Rating 3A

Breaking Capacity 10kA

Trip Curve D

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Single-pole protection D-curve tripping characteristic 10kA breaking capacity UL 489 listed for 277V Suitable for inductive loads Compact design

Product description

The Siemens 5SJ4103-8HG42 is a single-pole circuit breaker designed for overcurrent protection with a D-curve tripping characteristic. It offers a 3A rated current and a 10kA breaking capacity, suitable for applications with moderate to high inrush currents. This breaker is UL 489 listed for 277V, ensuring its suitability for demanding industrial and commercial environments.

This circuit breaker is ideal for protecting circuits containing inductive loads such as motors and transformers, where the D-curve's time-delayed response to inrush currents prevents nuisance tripping. The 10kA breaking capacity provides a reliable safety margin for fault interruption.

As a veteran-owned surplus parts distributor, Stanlo Automation provides reliable access to the Siemens 5SJ4103-8HG42. We ensure quality components and efficient service to support your automation needs, minimizing downtime and operational costs.

Technical specifications

Poles	1
Current Rating	3A
Breaking Capacity	10kA
Trip Curve	D
Voltage Rating	277V AC
Standard	UL 489
Manufacturer	Siemens

Common applications

Industrial control panels

Motor protection

Power distribution

Machine safety

Commercial electrical systems

Automation equipment

Compatible systems

Siemens 5SJ4 Series

Also known as

Siemens 5SJ4 D-curve breaker 5SJ4103-8HG42 3A breaker Siemens 277V breaker

Replaces / compatible with

Compatible with Siemens 5SJ4 series accessories.

Technical note

Expert tip

For applications requiring higher breaking capacity, consider higher rated Siemens circuit breakers.

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Frequently asked questions

Can the Siemens 5SJ4103-8HG42 be used for motor protection?

Yes, the Siemens 5SJ4103-8HG42 circuit breaker is suitable for motor protection due to its D-curve tripping characteristic. This curve allows for higher inrush currents typically associated with motor startup, preventing nuisance tripping while still offering overcurrent and short-circuit protection.