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Siemens 5SX2140-7 Miniature Circuit Breaker - 40A, 1-Pole

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ManufacturerSiemens

Part number5SX2140-7

Type Miniature Circuit Breaker

Poles 1

Current Rating 40A

Voltage Rating 230/400V

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Veteran-owned

CAGE: 9NK75

1-Pole Configuration C-Curve Trip Characteristic 6kA Breaking Capacity 230/400V Rated Voltage T55 Series DIN Rail Mountable

Product description

The Siemens 5SX2140-7 is a 1-pole miniature circuit breaker from the T55 series, designed for essential overcurrent protection. It features a 40A current rating, a C-curve trip characteristic suitable for inductive loads, and operates at 230/400V with a 6kA breaking capacity.

This breaker is suitable for use in industrial distribution systems, control panels, and machinery requiring reliable protection against overloads and short circuits. The C-curve is particularly useful for applications with moderate inrush currents.

Stanlo Automation, your veteran-owned surplus industrial automation parts distributor, offers the Siemens 5SX2140-7. We pride ourselves on providing quality, dependable components to keep your operations running efficiently.

Technical specifications

Type	Miniature Circuit Breaker
Poles	1
Current Rating	40A
Voltage Rating	230/400V
Breaking Capacity	6kA
Trip Curve	C
Series	T55

Common applications

Industrial Control Panels

Electrical Distribution

Automation Systems

Machinery Protection

Load Centers

Safety Equipment

Compatible systems

General purpose AC/DC circuits

Also known as

Siemens T55 40A 5SX2 40A Siemens 1 Pole C40

Replaces / compatible with

This Siemens 5SX2 T55 series breaker can serve as a replacement for other 40A, 1-pole, C-curve breakers within its product line. Always confirm compatibility with your specific application.

Technical note

Expert tip

Although the 5SX2 series is older and largely discontinued, it remains a reliable component for applications where its specifications meet the requirements. Ensure proper ventilation around the breaker for optimal performance.

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Frequently asked questions

What are the typical applications for a Siemens 5SX2140-7 circuit breaker?

The Siemens 5SX2140-7, with its 40A rating and C-curve, is typically used in industrial settings for protecting circuits with moderate inrush currents, such as those powering motors, transformers, or larger lighting systems. It's common in control panels and distribution boards.