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Siemens 5SJ4120-7HG41 1-Pole C-Curve Circuit Breaker - 20A

Siemens 5SJ4120-7HG41 1-pole, C-curve, 20A miniature circuit breaker.

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ManufacturerSiemens

Part number5SJ4120-7HG41

Type Miniature Circuit Breaker

Poles 1

Current Rating 20 A

Tripping Characteristic C

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1-pole design C-curve tripping 14kA interrupting capacity UL 489 listed 20A rating 70mm width

Product description

The Siemens 5SJ4120-7HG41 is a 1-pole miniature circuit breaker with a C-curve tripping characteristic, designed for 20A circuits. It boasts a 14kA breaking capacity and operates at 240V, adhering to UL 489 standards. The breaker is 70mm wide.

This breaker is suitable for applications requiring protection against overcurrents and short circuits, especially in circuits with moderate inductive loads. The C-curve ensures it can handle typical inrush currents from motors and transformers without premature tripping.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation components, offers the Siemens 5SJ4120-7HG41. We provide quality-tested parts at competitive prices, ensuring you get the components you need to maintain and upgrade your systems.

Technical specifications

Type	Miniature Circuit Breaker
Poles	1
Current Rating	20 A
Tripping Characteristic	C
Breaking Capacity	14 kA
Voltage Rating	240V AC
Depth	70 mm
Standard	UL 489

Common applications

Industrial control panels

Machine automation

Electrical distribution

OEM equipment

Automation systems

Compatible systems

Industrial automation Machine building Control panels Electrical distribution

Also known as

Siemens 5SJ4120-7HG41 5SJ4 Series breaker Siemens 20A C-curve MCB

Replaces / compatible with

This part is suitable as a replacement for other Siemens 5SJ4 series breakers with equivalent ratings. Always verify compatibility with the specific application requirements.

Technical note

Expert tip

Ensure that the 14kA interrupting rating is sufficient for the specific installation point. This rating must be greater than or equal to the maximum prospective short-circuit current at the point of application.

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Frequently asked questions

What type of loads can the Siemens 5SJ4120-7HG41 effectively protect?

The Siemens 5SJ4120-7HG41, with its C-curve tripping characteristic, is effective for protecting circuits with moderate inductive loads like motors, transformers, and fluorescent lighting. It allows for normal inrush currents during startup while providing fast protection against short circuits.