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Siemens 3RV2021-1BA15 S0 Motor Protection Circuit Breaker with Aux

Name: Siemens 3RV2021-1BA15
Brand: Siemens
SKU: 3RV2021-1BA15
Availability: InStock

Siemens 3RV2021-1BA15 S0 motor protection circuit breaker with aux switches.

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ManufacturerSiemens

Part number3RV2021-1BA15

Part Number 3RV2021-1BA15

Manufacturer Siemens

Size S0

Protection Motor

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Motor Protection Adjustable Thermal Overload Class 10 Rating Screw Terminals Integrated Aux Switches (1NO+1NC) Size S0

Product description

The Siemens 3RV2021-1BA15 is a Size S0 motor protection circuit breaker with Class 10 rating, featuring screw terminals. It offers an adjustable thermal overload trip from 1.4 to 2.0 Amps and a fixed magnetic trip of 26 Amps. This variant is equipped with integrated transverse auxiliary switches: one normally open (NO) and one normally closed (NC).

This breaker is suitable for applications requiring both motor protection and integrated signaling or remote monitoring capabilities. The auxiliary contacts provide a means to integrate the breaker's status into PLC-based control systems or for local indication.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the Siemens 3RV2021-1BA15. We provide reliable access to quality components, ensuring your industrial operations benefit from our expert service and competitive pricing.

Technical specifications

Part Number	3RV2021-1BA15
Manufacturer	Siemens
Size	S0
Protection	Motor
Class	10
Adjustable Thermal Trip	1.4-2.0A
Fixed Magnetic Trip	26A
Terminals	Screw
Aux Switches	1 NO + 1 NC

Common applications

Motor Control Panels

Industrial Automation

Signaling Circuits

Status Monitoring

Pump Protection

Machine Building

Compatible systems

Siemens Sirius 3RV2 Series devices

Also known as

Siemens 3RV2021-1BA15

Replaces / compatible with

This unit replaces standard S0 motor protection circuit breakers requiring auxiliary contacts for signaling. Compatible with Siemens control systems.

Technical note

Expert tip

The auxiliary contacts are typically rated for lower control voltages and currents, separate from the main motor circuit.

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Frequently asked questions

What type of auxiliary contacts are included with the 3RV2021-1BA15?

The Siemens 3RV2021-1BA15 comes with one normally open (NO) and one normally closed (NC) auxiliary contact. These are used for signaling purposes, such as indicating the breaker's trip status or for interlocking functions.