Siemens SIRIUS 3RV2021-4AA20 10–16A Motor Protection Circuit Breaker

Description

The Siemens SIRIUS 3RV2021-4AA20 motor protection circuit breaker is designed for motor feeders and industrial control panels. It combines motor overload protection with short-circuit protection in a compact three-pole device. The rotary handle allows manual switching and operation.

Its adjustable thermal overload release supports settings from 10 A to 16 A, while the magnetic short-circuit release has a specified response value of 208 A. The breaker uses spring-type terminals for electrical connections.

Key Specifications

– Brand: Siemens
– Product family: SIRIUS 3RV2
– Model: 3RV2021-4AA20
– Product type: Motor protection circuit breaker
– Number of poles: 3
– Adjustable overload setting: 10–16 A
– Rated continuous current: 16 A
– Trip class: Class 10
– Magnetic short-circuit release: 208 A
– Rated operating voltage: 20–690 V AC
– Rated motor power at 400 V AC: 7.5 kW
– Terminal type: Spring-type
– Frame size: S0
– Degree of protection: IP20
– Dimensions: Approximately 45 × 119 × 97 mm (W × H × D)

Product Features

– Adjustable motor overload protection: Set the overload release within the 10–16 A range according to the motor’s rated current.
– Short-circuit protection: Includes a magnetic release for short-circuit faults.
– Three-pole switching: Designed for compatible three-phase motor circuits.
– Rotary operating handle: Supports manual switching and reset operation.
– Spring-type terminals: Provide a spring-clamp connection for the main circuit.
– SIRIUS system compatibility: Can be combined with compatible Siemens contactors and accessories according to the manufacturer’s selection tables.

Typical Applications

– Industrial motor control panels
– Pumps and pumping systems
– Fans and ventilation equipment
– Conveyors and material-handling systems
– Machinery and production equipment