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Siemens 3RV2742-5GD10 S3 Circuit Breaker, 40A

Siemens 3RV2742-5GD10 S3 circuit breaker for system protection.

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ManufacturerSiemens

Part number3RV2742-5GD10

Frame Size S3

Approval UL 489, CSA C22.2 No. 5-02

Thermal Release (A-release) 40 A

Short-Circuit Release (N-release) 520 A

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System protection UL 489 & CSA approved S3 frame size Thermal and short-circuit release Screw terminal connections

Product description

The Siemens 3RV2742-5GD10 is a high-capacity S3 frame size circuit breaker designed for advanced system protection. It is equipped with a thermal overload release of 40 A and a short-circuit release of 520 A, offering robust safeguarding for demanding industrial applications. This breaker meets UL 489 and CSA C22.2 No. 5-02 standards and utilizes a screw terminal for secure and reliable connections.

This circuit breaker is well-suited for protecting large industrial motors, heavy-duty power distribution systems, and critical machinery in sectors such as oil and gas, heavy manufacturing, and power generation. Its specifications provide essential protection against overloads and significant short circuits.

Stanlo Automation, a veteran-owned surplus industrial parts distributor, provides the Siemens 3RV2742-5GD10. We are dedicated to offering quality surplus automation components and exceptional customer service to meet your procurement needs.

Technical specifications

Frame Size	S3
Approval	UL 489, CSA C22.2 No. 5-02
Thermal Release (A-release)	40 A
Short-Circuit Release (N-release)	520 A
Terminal Type	Screw Terminal

Common applications

Motor protection

Industrial power systems

Oil and gas industry

Heavy manufacturing

Power generation

Compatible systems

Suitable for integration into Siemens industrial control systems and panels requiring UL 489 and CSA certified protection for S3 frame size applications.

Also known as

Siemens S3 40A breaker 3RV2742-5GD10 system protection 520A

Replaces / compatible with

This Siemens circuit breaker is designed as a replacement or compatible component for systems needing an S3 frame size with 40A thermal and 520A short-circuit protection within the 3RV2 series.

Technical note

Expert tip

The 520A short-circuit release ensures rapid and safe interruption of high fault currents, essential for protecting large industrial power circuits.

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Frequently asked questions

What is the thermal overload rating for the Siemens 3RV2742-5GD10 circuit breaker?

The Siemens 3RV2742-5GD10 features a thermal overload (A-release) setting of 40 A, providing effective protection against prolonged overcurrent conditions for industrial equipment.