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Siemens SIRIUS 3RV1021-1HA10 Motor Protection Circuit Breaker

Siemens SIRIUS S0 Motor Protection Circuit Breaker

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ManufacturerSiemens

Part number3RV1021-1HA10

Size S0

Motor Protection Yes

Class CLASS 10

A-release 5.5-8 A

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Size S0 Motor Protection CLASS 10 Rating Adjustable Overload (5.5-8A) 104A Short-Circuit Release Screw Terminals

Product description

The Siemens 3RV1021-1HA10 is a Size S0 circuit breaker from the SIRIUS line, designed for motor protection. It features a CLASS 10 rating, an adjustable overload (A-release) range of 5.5 to 8 Amps, and a short-circuit release of 104 Amps. This model uses screw terminals for connection and offers standard switching capacity. Please note that this is a phased-out product, with the SIRIUS 3RV2 series being its successor, specifically the 3RV2011-1HA10 preferred type.

This circuit breaker is critical for protecting electric motors from overloads and short circuits in industrial machinery, pump systems, and conveyor belts. Its adjustable trip settings allow for precise motor protection tailored to specific applications.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RV1021-1HA10. We provide hard-to-find and legacy components for maintaining and repairing existing automation systems.

Technical specifications

Size	S0
Motor Protection	Yes
Class	CLASS 10
A-release	5.5-8 A
Short-circuit release	104 A
Terminals	Screw

Common applications

Motor Protection

Industrial Machinery

Pump Control

Conveyor Systems

Machine Tools

Compatible systems

Motor circuits requiring S0 size protection

Also known as

Siemens S0 Circuit Breaker SIRIUS 3RV1021 3RV10211HA10

Replaces / compatible with

This is a phased-out product. The preferred successor is the SIRIUS 3RV2011-1HA10.

Technical note

Expert tip

While a phased-out product, this breaker can still be a critical component for maintaining older automated systems.

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Frequently asked questions

What is the overload and short-circuit trip range for the Siemens 3RV1021-1HA10 circuit breaker?

The Siemens 3RV1021-1HA10 motor protection circuit breaker has an adjustable overload (A-release) range of 5.5 to 8 Amps and a fixed short-circuit release of 104 Amps.