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Siemens 5SJ4125-7HG42 Circuit Breaker - 1-Pole, C-Curve, 25A, 277V

Siemens 5SJ4125-7HG42 1-pole Circuit Breaker, 25A, 277V

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ManufacturerSiemens

Part number5SJ4125-7HG42

Poles 1

Current Rating 25A

Voltage Rating 277V

Breaking Capacity 10kA

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1-pole protection C-curve tripping 10kA breaking capacity UL 489 certified for 277V Overcurrent protection Industrial grade

Product description

The Siemens 5SJ4125-7HG42 is a 1-pole circuit breaker designed for overcurrent protection, with a C-curve tripping characteristic suitable for loads with moderate inrush currents. It is rated for 277V and has a breaking capacity of 10kA, complying with UL 489 standards for 277V applications. The current rating is 25A.

This circuit breaker is utilized in various industrial and commercial settings to protect circuits and equipment from overloads and short circuits. Its 277V rating makes it suitable for specific power distribution systems in North America, commonly found in manufacturing plants and large commercial buildings.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, offers the Siemens 5SJ4125-7HG42. We provide quality, reliable components to keep your operations running smoothly.

Technical specifications

Poles	1
Current Rating	25A
Voltage Rating	277V
Breaking Capacity	10kA
Curve Type	C
Standard	UL 489

Common applications

Power distribution

Industrial controls

Commercial electrical systems

277V circuits

Machine protection

Electrical safety

Compatible systems

Compatible with Siemens 5SJ series accessories and standard DIN rail mounting systems.

Also known as

Siemens 5SJ4125-7HG42 Siemens 277V circuit breaker

Replaces / compatible with

This circuit breaker can replace or be compatible with other Siemens 5SJ series breakers designed for 277V applications with similar current and breaking capacity ratings.

Technical note

Expert tip

The 10kA interrupting rating is crucial for applications where significant fault currents are possible at 277V.

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Frequently asked questions

What is the significance of the UL 489-277V rating for this breaker?

The UL 489-277V rating signifies that the Siemens 5SJ4125-7HG42 circuit breaker has been tested and certified by UL to safely interrupt fault currents up to 10kA at 277 volts, meeting specific safety standards for this voltage level in North America.