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Siemens 3RV2042-4MB10 SIRIUS Motor Protection Circuit Breaker - S3, Class 20

Siemens SIRIUS 3RV2042-4MB10 Motor Protection Circuit Breaker

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ManufacturerSiemens

Part number3RV2042-4MB10

Size S3

Class 20

A-Release 80-100 A

N-Release 1300 A

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Motor protection Class 20 thermal overload Adjustable current setting Increased switching capacity Screw terminals SIRIUS 3RV20 series

Product description

The Siemens 3RV2042-4MB10 is a motor protection circuit breaker from the SIRIUS 3RV20 series, designed for Size S3 applications. It features a Class 20 thermal overload relay with an adjustable A-release range of 80-100 A and a short-circuit release of 1300 A. This breaker offers increased switching capacity and utilizes screw terminals for installation.

This motor protection circuit breaker is engineered for robust performance in demanding industrial environments, offering reliable protection for motors and associated equipment against overloads and short circuits. Its Class 20 rating is suitable for applications requiring a slower tripping response for motor startups.

Stanlo Automation, a veteran-owned business, is your source for quality industrial automation parts like the Siemens 3RV2042-4MB10. We are committed to providing efficient service and reliable products to keep your operations running smoothly.

Technical specifications

Size	S3
Class	20
A-Release	80-100 A
N-Release	1300 A
Switching Capacity	100 kA
Terminals	Screw
Poles	3
Rated Voltage	690 V
Rated Current	100 A

Common applications

Industrial motor control

Pump and fan applications

Conveyor systems

Machine tools

Manufacturing automation

Compatible systems

Compatible with Siemens SIRIUS 3RV2 system components and accessories.

Also known as

Siemens 3RV2042-4MB10 Motor Protector SIRIUS S3 Circuit Breaker 3RV20 Motor Protection Switch

Replaces / compatible with

This part is a direct replacement for Siemens 3RV2042-4MB10. Compatible with Siemens SIRIUS 3RV2 accessories.

Technical note

Expert tip

The Class 20 rating is beneficial for motors with higher inrush currents during startup, preventing nuisance tripping.

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Frequently asked questions

What is the overload class for the Siemens 3RV2042-4MB10?

The Siemens 3RV2042-4MB10 features a Class 20 thermal overload relay, indicating a longer time delay for tripping during motor start-up compared to Class 10.