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Siemens 3RV2742-5ED10 S3 Circuit Breaker, 30A

Siemens 3RV2742-5ED10 S3 circuit breaker for system protection.

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ManufacturerSiemens

Part number3RV2742-5ED10

Frame Size S3

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

Thermal Release (A-release) 30 A

Short-Circuit Release (N-release) 390 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 3RV2742-5ED10 is a high-performance circuit breaker within the S3 frame size, designed for superior system protection. It features a thermal overload release set at 30 A and a short-circuit release of 390 A, ensuring reliable safety for demanding industrial applications. This breaker adheres to UL 489 and CSA C22.2 No. 5-02 standards and utilizes a screw terminal for secure electrical connections.

This S3 circuit breaker is an excellent choice for protecting larger industrial motors, power distribution systems, and heavy machinery where significant current loads are common. Its robust construction and safety certifications make it suitable for harsh operational environments.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, offers the Siemens 3RV2742-5ED10. We provide dependable surplus components and exceptional customer support to ensure your automation projects are successful.

Technical specifications

Frame Size	S3
Approval	UL 489, CSA C22.2 No. 5-02
Thermal Release (A-release)	30 A
Short-Circuit Release (N-release)	390 A
Terminal Type	Screw Terminal

Common applications

Motor protection

Industrial power distribution

Heavy machinery

Manufacturing automation

Process control

Compatible systems

Integrates with Siemens industrial control systems and panels that require UL 489 and CSA certified S3 frame size circuit protection.

Also known as

Siemens S3 30A breaker 3RV2742-5ED10 system protection 390A

Replaces / compatible with

This Siemens breaker is designed as a direct replacement or compatible alternative for systems requiring an S3 frame size with 30A thermal and 390A short-circuit protection within the 3RV2 series.

Technical note

Expert tip

The thermal release (A-release) is adjustable within a range around the 30A nominal value for precise motor protection.

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Frequently asked questions

What is the short-circuit trip current for the Siemens 3RV2742-5ED10?

The Siemens 3RV2742-5ED10 circuit breaker has a short-circuit (N-release) rating of 390 A, ensuring rapid interruption of high fault currents.