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Siemens 3RV2742-5CD10 S3 Circuit Breaker, 20A

Siemens 3RV2742-5CD10 S3 circuit breaker for system protection.

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ManufacturerSiemens

Part number3RV2742-5CD10

Frame Size S3

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

Thermal Release (A-release) 20 A

Short-Circuit Release (N-release) 260 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 3RV2742-5CD10 is an S3-sized circuit breaker engineered for robust system protection. It features a thermal overload release of 20 A and a short-circuit release of 260 A, providing reliable safeguarding for electrical circuits and equipment. This component 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 well-suited for applications involving moderate to heavy-duty motors, control systems, and power distribution units in industrial settings. Its specifications ensure protection against overloads and short circuits, vital for maintaining operational continuity in manufacturing plants and process industries.

Stanlo Automation, a veteran-owned surplus industrial parts distributor, offers the Siemens 3RV2742-5CD10. We are committed to providing quality surplus automation components and excellent 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)	20 A
Short-Circuit Release (N-release)	260 A
Terminal Type	Screw Terminal

Common applications

Motor protection

Industrial control

Power distribution

Manufacturing equipment

Process automation

Compatible systems

Suitable for use in Siemens industrial control systems and panels requiring UL 489 and CSA certified protection with S3 frame size.

Also known as

Siemens S3 20A breaker 3RV2742 circuit breaker system protection S3

Replaces / compatible with

This breaker is designed to replace or be compatible with other Siemens 3RV2 series components requiring S3 frame size and similar protection ratings.

Technical note

Expert tip

The N-release setting of 260 A provides a quick response to high-magnitude fault currents, preventing extensive damage to electrical systems.

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Frequently asked questions

What is the thermal overload rating for the Siemens 3RV2742-5CD10?

The Siemens 3RV2742-5CD10 features a thermal overload (A-release) setting of 20 A, designed to protect equipment from prolonged overcurrent conditions.