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Siemens 5SJ4140-7HG40 1-Pole C 40A Circuit Breaker 240V UL 489

Siemens 5SJ4140-7HG40 miniature circuit breaker - 1-pole, 40A, 240V, UL 489.

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ManufacturerSiemens

Part number5SJ4140-7HG40

Voltage 240V

Current 40A

Poles 1

Breaking Capacity 14kA

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UL 489 Listed 14kA Interrupting Capacity Type C Trip Curve 40A Rating Equal Polarity Design 70mm Width

Product description

The Siemens 5SJ4140-7HG40 is a 1-pole, Type C miniature circuit breaker offering robust protection for 240V systems. It boasts a high breaking capacity of 14kA, is rated for 40A, and features a 70mm width. This model supports equal polarity and adheres to UL 489 standards.

This circuit breaker is designed for industrial and commercial applications requiring reliable overcurrent protection for circuits with moderate inrush currents. Its equal polarity feature ensures consistent connection regardless of orientation, suitable for diverse installations.

Stanlo Automation, a veteran-owned surplus parts supplier, provides the Siemens 5SJ4140-7HG40. We ensure authentic products and competitive pricing for your automation needs.

Technical specifications

Voltage	240V
Current	40A
Poles	1
Breaking Capacity	14kA
Curve	C
Standard	UL 489
Width	70 mm
Polarity	Equal

Common applications

Industrial Control Panels

Machinery Protection

Building Electrical Systems

240V Circuits

Overload Protection

Compatible systems

Siemens S200, S2000, and 5SJ4 series accessories

Also known as

Siemens 5SJ4140 5SJ4140 C40 Siemens UL 489 breaker

Replaces / compatible with

Compatible with Siemens 5SJ4 series accessories and related legacy circuit breakers.

Technical note

Expert tip

The 70mm width allows for high pole density in electrical enclosures.

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Frequently asked questions

What does 'equal polarity' mean for the Siemens 5SJ4140-7HG40?

Equal polarity on the Siemens 5SJ4140-7HG40 means that the line and load terminals have the same polarity, allowing for consistent installation regardless of how the breaker is oriented. This simplifies wiring in complex panel designs.