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Siemens 3RV2021-4NA10 S0 Motor Protection Circuit Breaker

Siemens 3RV2021-4NA10 S0 motor protection breaker with screw terminals.

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ManufacturerSiemens

Part number3RV2021-4NA10

Size S0

Class 10

A-release 23-28 A

N-release 364 A

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Motor protection Adjustable current setting Screw terminals Standard switching capacity Class 10 rating Compact size

Product description

The Siemens 3RV2021-4NA10 is a Size S0 motor protection circuit breaker, specified for Class 10 performance. It features an adjustable A-release setting from 23 to 28 A and a short-circuit release (N-release) of 364 A. This model utilizes screw terminals for secure electrical connections and offers standard switching capacity.

Designed for reliable protection of electric motors, this circuit breaker is suitable for a wide range of industrial applications, including pumps, fans, compressors, and machine tools. Its adjustable current setting allows for fine-tuning motor protection to match specific load requirements.

Stanlo Automation, your veteran-owned source for industrial surplus, provides the Siemens 3RV2021-4NA10. We ensure you receive quality parts to maintain your operational efficiency.

Technical specifications

Size	S0
Class	10
A-release	23-28 A
N-release	364 A
Terminals	Screw
Switching Capacity	Standard

Common applications

Motor control

Pump applications

Fan systems

Compressor control

Machine tools

Industrial automation

Compatible systems

Siemens Sirius 3RV2 series motor protection

Also known as

Siemens 3RV2 S0 breaker 3RV2021-4NA10 motor starter Siemens 23-28A circuit breaker

Replaces / compatible with

Replaces older Siemens motor protection circuit breakers in the S0 size with screw terminals. Compatible with Siemens Sirius accessories.

Technical note

Expert tip

The screw terminals provide a secure connection point suitable for fixed installations where vibration is not a primary concern.

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Frequently asked questions

What is the N-release (short-circuit) rating for the Siemens 3RV2021-4NA10?

The Siemens 3RV2021-4NA10 features an N-release, or short-circuit release, rating of 364 Amps. This ensures rapid disconnection of the circuit in the event of a short circuit, protecting the motor and connected equipment.