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Siemens 3RV2742-5HD10 S3 Circuit Breaker, 45A

Siemens 3RV2742-5HD10 S3 circuit breaker for system protection.

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ManufacturerSiemens

Part number3RV2742-5HD10

Frame Size S3

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

Thermal Release (A-release) 45 A

Short-Circuit Release (N-release) 585 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 3RV2742-5HD10 is a high-capacity S3 frame size circuit breaker engineered for robust system protection. It features a thermal overload release of 45 A and a short-circuit release of 585 A, providing reliable safeguarding for significant industrial electrical loads. This breaker meets UL 489 and CSA C22.2 No. 5-02 standards and is equipped with a screw terminal for secure installation.

This circuit breaker is ideal for protecting large industrial motors, power distribution systems, and heavy machinery in demanding environments such as large-scale manufacturing, heavy infrastructure, and specialized industrial plants. Its specifications ensure protection against overloads and severe short circuits.

Stanlo Automation, a veteran-owned surplus industrial parts distributor, offers the Siemens 3RV2742-5HD10. We are committed to providing quality surplus automation components and excellent customer service to support your operational needs.

Technical specifications

Frame Size	S3
Approval	UL 489, CSA C22.2 No. 5-02
Thermal Release (A-release)	45 A
Short-Circuit Release (N-release)	585 A
Terminal Type	Screw Terminal

Common applications

Motor protection

Industrial power distribution

Heavy infrastructure

Large manufacturing

Specialized industrial

Compatible systems

Integrates with Siemens industrial control systems and panels requiring UL 489 and CSA certified protection for S3 frame size applications.

Also known as

Siemens S3 45A breaker 3RV2742-5HD10 system protection 585A

Replaces / compatible with

This Siemens circuit breaker is designed as a replacement or compatible component for systems requiring an S3 frame size with 45A thermal and 585A short-circuit protection within the 3RV2 series.

Technical note

Expert tip

The 585A short-circuit release offers rapid fault interruption, critical for safeguarding large motors and complex power systems from severe damage.

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Frequently asked questions

What are the thermal and short-circuit ratings for the Siemens 3RV2742-5HD10?

The Siemens 3RV2742-5HD10 circuit breaker features a thermal overload (A-release) of 45 A and a short-circuit (N-release) of 585 A, providing essential protection for high-capacity industrial applications.