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Siemens 3RV2031-4VB15 S2 Class 20 MP Breaker w/ Aux Switch

Siemens 3RV2031-4VB15 S2 Class 20 MP Breaker w/ Aux

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ManufacturerSiemens

Part number3RV2031-4VB15

Size S2

Type Motor Protection Circuit Breaker

Trip Class 20

Adjustable Current (A-release) 35-45 A

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Motor protection Class 20 tripping Adjustable 35-45A range Integrated 1 NO + 1 NC auxiliary switch Screw terminals Size S2

Product description

The Siemens 3RV2031-4VB15 is a Size S2 motor protection circuit breaker featuring a Class 20 trip rating, ideal for applications needing a slower overload trip response. It offers an adjustable A-release from 35 to 45 A and a 650 A N-release. This model is equipped with a transverse auxiliary switch (1 NO + 1 NC) for signaling or interlocking purposes and uses screw terminals for secure connection.

This breaker is well-suited for protecting motors in industrial machinery, material handling systems, and other applications where combined motor protection and status signaling are necessary. The Class 20 rating is beneficial for motors with longer start-up periods.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, provides the Siemens 3RV2031-4VB15. We ensure reliable, cost-effective solutions for your automation needs, backed by our commitment to quality and customer satisfaction.

Technical specifications

Size	S2
Type	Motor Protection Circuit Breaker
Trip Class	20
Adjustable Current (A-release)	35-45 A
Short Circuit Release (N-release)	650 A
Auxiliary Switches	1 NO + 1 NC (transverse)
Terminals	Screw

Common applications

Motor control with signaling

Industrial automation

Material handling

Pump systems

Fan units

Machine tools

Compatible systems

Compatible with Siemens Sirius motor protection systems and can be integrated into various industrial control panel designs.

Also known as

Siemens 3RV2031-4VB15 3RV20314VB15 Siemens S2 breaker with aux

Replaces / compatible with

This circuit breaker with auxiliary contacts can replace Siemens motor protection solutions requiring Class 20 tripping and integrated signaling functions.

Technical note

Expert tip

The auxiliary contacts are electrically separate from the main power circuit and are intended for low-power control signals.

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Frequently asked questions

Can the Siemens 3RV2031-4VB15 auxiliary switch be used for remote monitoring?

Yes, the integrated 1 NO + 1 NC auxiliary switch on the Siemens 3RV2031-4VB15 can be wired into a control system for remote monitoring of the breaker's status (e.g., tripped or closed). It's also commonly used for interlocking purposes.