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Siemens 3RV2031-4BB10: S2 Motor Protection, Class 20, 14-20A

Siemens 3RV2031-4BB10: Size S2 Motor Protection Circuit Breaker, Class 20

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ManufacturerSiemens

Part number3RV2031-4BB10

Size S2

Class 20

A-release 14-20 A

N-release 260 A

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Motor protection Adjustable overload protection (Class 20) Short-circuit protection Standard switching capacity Screw terminals

Product description

The Siemens 3RV2031-4BB10 is a Size S2 motor protection circuit breaker, part of the reliable SIRIUS 3RV2 series. It features a Class 20 thermal release with an adjustable range of 14-20A, offering enhanced protection for motors requiring a slower trip curve. This breaker also includes a short-circuit release (N-release) of 260A and utilizes screw terminals for secure connections. Its standard switching capacity ensures dependable performance in industrial settings.

This motor protection circuit breaker is ideal for applications where motors may experience temporary overloads or require a longer time to trip during fault conditions. It is commonly used in industrial machinery, pumps, and fans, providing robust protection and reliable operation. The S2 frame size ensures a compact footprint within control panels.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RV2031-4BB10. Rely on us for quality surplus components and efficient service to keep your automation systems running. We are committed to providing solutions for your industrial needs.

Technical specifications

Size	S2
Class	20
A-release	14-20 A
N-release	260 A
Terminals	Screw
Switching Capacity	Standard

Common applications

Industrial machinery

Motor control

Pump applications

Fan control

Heavy-duty applications

Compatible systems

Compatible with Siemens SIRIUS 3RV2 series motor starter protectors and accessories.

Also known as

Siemens S2 Motor Protector 3RV2031-4BB10 Breaker SIRIUS 3RV2 Class 20

Replaces / compatible with

Suitable as a replacement for other Siemens S2 motor protection circuit breakers with Class 20 tripping characteristics.

Technical note

Expert tip

The Class 20 rating is beneficial for motors with higher starting inrush currents, providing better protection against nuisance tripping during startup.

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Frequently asked questions

What is the difference between Class 10 and Class 20 for Siemens motor protection circuit breakers?

Class 10 and Class 20 refer to the tripping time of the thermal overload release. Class 10 trips faster, generally within 10 seconds at 6 times the set current, while Class 20 trips slower, within 20 seconds under the same conditions. Class 20 is often used for motors with higher starting currents or longer acceleration times.