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Siemens 3RV2021-4EA20 S0 Motor Protection Breaker Spring-Type

Siemens 3RV2021-4EA20 S0 Motor Protection Circuit Breaker

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ManufacturerSiemens

Part number3RV2021-4EA20

Size S0

Motor Protection Yes

Class 10

A-Release 27-32 A

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Motor protection Adjustable trip current Standard switching capacity Spring-type terminals CLASS 10 rating Higher current range

Product description

The Siemens 3RV2021-4EA20 is a size S0 motor starter protector featuring spring-type terminals for enhanced connectivity. It offers CLASS 10 motor protection with an adjustable A-release setting from 27A to 32A and a fixed N-release of 400A. The spring-type terminals ensure a secure, vibration-resistant connection, simplifying installation and maintenance.

This circuit breaker is designed for protecting larger motors in demanding industrial environments, including manufacturing, material processing, and automation systems, especially where vibration is a concern. The spring terminals offer a reliable alternative to screw terminals.

Stanlo Automation, a veteran-owned surplus parts distributor, provides the Siemens 3RV2021-4EA20. We offer competitive pricing and efficient service to ensure your operations experience minimal downtime. Trust Stanlo for your essential industrial automation components.

Technical specifications

Size	S0
Motor Protection	Yes
Class	10
A-Release	27-32 A
N-Release	400 A
Terminals	Spring-type
Switching Capacity	Standard

Common applications

Motor control

Automation systems

Pump controls

Fan controls

Industrial machinery

High-vibration environments

Compatible systems

PLC systems Control panels Motor starter circuits Industrial automation Control cabinet wiring

Also known as

Siemens 3RV2021-4EA20 3RV20214EA20 Siemens S0 spring terminal breaker

Replaces / compatible with

Compatible with Siemens 3RV2 series motor protection and control systems.

Technical note

Expert tip

The spring-loaded terminals on the 3RV2021-4EA20 are designed for solid or fine-stranded conductors and ensure reliable termination even with conductor expansion/contraction due to temperature changes.

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Frequently asked questions

What are the advantages of spring-type terminals on the Siemens 3RV2021-4EA20?

The spring-type terminals on the Siemens 3RV2021-4EA20 offer a vibration-resistant connection that maintains consistent contact pressure without the need for re-tightening. They also allow for faster wiring compared to screw terminals.