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Siemens 5SJ4110-8HG42 1-Pole 10A D-Curve Circuit Breaker

Siemens 5SJ4110-8HG42 1-pole, 10A, D-curve miniature circuit breaker.

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ManufacturerSiemens

Part number5SJ4110-8HG42

Poles 1

Current Rating 10A

Breaking Capacity 10kA

Curve Type D

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10kA interrupting rating D-curve tripping for high inrush 277V AC UL 489 listing Single-pole design Motor and transformer protection

Product description

The Siemens 5SJ4110-8HG42 is a 1-pole miniature circuit breaker featuring a D-curve tripping characteristic, ideal for applications with high inrush currents like motors. It is rated for 10 A and has a short-circuit breaking capacity of 10 kA. This UL 489 listed breaker is suitable for use up to 277V AC.

This circuit breaker is particularly well-suited for protecting inductive loads that experience significant temporary current surges upon startup, such as electric motors, transformers, and solenoids. Its robust D-curve offers enhanced protection against these transient overcurrents. Common industries include heavy manufacturing, industrial automation, and process control.

Stanlo Automation, a veteran-owned supplier of surplus industrial parts, offers the Siemens 5SJ4110-8HG42 to meet your critical component needs. We ensure that you receive dependable surplus automation parts, backed by our commitment to quality and customer satisfaction.

Technical specifications

Poles	1
Current Rating	10A
Breaking Capacity	10kA
Curve Type	D
Voltage Rating	277V AC
Standard	UL 489

Common applications

Motor control

Transformer protection

Solenoid circuits

Heavy machinery

Industrial automation

Process control

Compatible systems

UL 489 rated systems up to 277V AC, suitable for motor loads

Also known as

Siemens 5SJ4 D-curve 5SJ4 Series 10A D Miniature circuit breaker D-curve

Replaces / compatible with

This part is a Siemens 5SJ4 series circuit breaker and is generally compatible with other Siemens miniature circuit breakers of similar specifications and physical dimensions within the same series.

Technical note

Expert tip

The D-curve characteristic of the 5SJ4110-8HG42 is optimized for loads with inrush currents typically 10-20 times the rated current.

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Frequently asked questions

Why choose a D-curve breaker like the 5SJ4110-8HG42 for motor applications?

A D-curve breaker, such as the 5SJ4110-8HG42, is designed to handle the high temporary inrush currents that occur when starting motors. This prevents nuisance tripping while still providing protection against sustained overloads and short circuits.