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Siemens 5SJ4101-7HG40 Miniature Circuit Breaker - 1A, C-Curve

Siemens 5SJ4101-7HG40 1-pole Miniature Circuit Breaker

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ManufacturerSiemens

Part number5SJ4101-7HG40

Poles 1

Rated Current 1A

Trip Curve C

Interrupting Capacity 14kA

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1-pole configuration 1A current rating C-curve tripping characteristic 14kA interrupting capacity UL 489 listed Equal polarity design

Product description

The Siemens 5SJ4101-7HG40 is a high-performance miniature circuit breaker (MCB) designed for reliable overcurrent protection. This 1-pole breaker features a C-curve tripping characteristic, a 1A rated current, and a substantial 14kA interrupting capacity at 240V AC. It is manufactured according to UL 489 standards and includes features for equal polarity.

This MCB is ideal for use in residential, commercial, and industrial applications requiring precise protection against overloads and short circuits. Its C-curve is well-suited for inductive loads, and its UL 489 listing makes it suitable for specific North American installations. Applications include distribution boards, control cabinets, and branch circuit protection.

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Technical specifications

Poles	1
Rated Current	1A
Trip Curve	C
Interrupting Capacity	14kA
Voltage Rating	240V AC
Standard	UL 489
Manufacturer	Siemens
Series	5SJ4

Common applications

Electrical distribution panels

Industrial control systems

Commercial buildings

Residential wiring

Machinery protection

Compatible systems

Standard DIN rail mounting Compatible with Siemens 5SJ4 series accessories UL 489 compliant electrical systems

Also known as

Siemens 5SJ41 MCB 1A C-curve breaker UL 489 circuit breaker

Replaces / compatible with

This breaker is designed to replace older Siemens circuit breakers of similar specifications within the 5SJ4 series or other compatible UL 489 listed devices.

Technical note

Expert tip

The D=70mm designation in the description likely refers to the required mounting space or center-to-center distance for certain installations, though standard DIN rail mounting is typical.

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Frequently asked questions

What is the interrupting capacity of the Siemens 5SJ4101-7HG40 circuit breaker?

The Siemens 5SJ4101-7HG40 miniature circuit breaker has an interrupting capacity of 14kA at 240V AC. This rating ensures it can safely interrupt fault currents without damage.