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Siemens 3RV2021-4FA10 S0 Motor Protection Circuit Breaker

Siemens 3RV2021-4FA10 S0 motor protection circuit breaker with screw terminals.

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ManufacturerSiemens

Part number3RV2021-4FA10

Size S0

Class 10

A-release 34-40 A

N-release 480 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 High short-circuit release

Product description

The Siemens 3RV2021-4FA10 is a Size S0 motor protection circuit breaker rated for Class 10 operation. It features an adjustable A-release range of 34 to 40 A and an N-release (short-circuit release) of 480 A. This model is equipped with screw terminals for robust connections and offers standard switching capacity.

This circuit breaker is designed for reliable motor protection in demanding industrial environments. Applications include controlling and protecting motors in manufacturing equipment, material handling systems, and other heavy-duty machinery where precise current settings are required.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RV2021-4FA10. We provide high-quality components to ensure the continuous operation of your automation systems.

Technical specifications

Size	S0
Class	10
A-release	34-40 A
N-release	480 A
Terminals	Screw
Switching Capacity	Standard

Common applications

Motor control panels

Industrial machinery

Manufacturing automation

Material handling

Heavy-duty equipment

Compatible systems

Siemens Sirius 3RV2 series motor protection

Also known as

Siemens 3RV2 S0 breaker 3RV2021-4FA10 motor starter Siemens 34-40A 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

Ensure proper wire termination and torque are applied to the screw terminals for a secure and safe connection.

What happens next?

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Frequently asked questions

What is the maximum short-circuit breaking capacity for the Siemens 3RV2021-4FA10?

The Siemens 3RV2021-4FA10 features an N-release (short-circuit release) of 480 Amps. This provides reliable protection against high fault currents typical in industrial motor circuits.