3RW4422-1BC44

Standard wiring provides 29A, 15kW; delta wiring provides up to 50A, 22kW. It controls 230V AC and features screw-type terminals. This is one of the smallest capacity entry-level models in the Siemens SIRIUS 3RW44 series.

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Siemens 3RW4422-1BC44 SIRIUS soft starter product image

Product Positioning

The 3RW4422-1BC44 is a smaller capacity soft starter model in the SIRIUS 3RW44 series. It uses a 230V AC control voltage and thyristor phase control, making it suitable for smooth starting and stopping of small and medium-sized three-phase motors.

Core Product Advantages and Features

15kW standard wiring capacity

With standard wiring at 400V, it can drive a 15kW three-phase motor, suitable for small equipment applications.

Delta connection upgraded to 22kW

By adopting the Inside-Delta wiring method, the driving power can be increased to 22kW, saving installation space.

Built-in bypass connection

After startup, the bypass is automatically switched on to reduce heat generation and energy consumption during operation.

Screw-type terminal connection

Both the main circuit and the control circuit use screw terminals, and the construction method is highly compatible with the field tools.

project	Specification
model	3RW4422-1BC44
Product Category	SIRIUS 3RW44 Miniature Three-Phase Soft Starter
Rated current (standard wiring, 40°C)	29 A
Rated current (delta connection, 40°C)	50 A
Rated power (400V, standard wiring)	15 kW
Rated power (400V, delta connection)	22 kW
Rated power (230V, standard wiring)	5.5 kW
Rated power (230V, delta connection)	15 kW
Rated voltage range	200~460 V AC (-15%/+10%)
Control voltage	AC 230 V (50/60 Hz)
Enclosure protection rating	IP00
Main circuit terminals	Crimp terminal (box terminal)
Control circuit wiring terminals	Screw terminals
External dimensions (width x height x depth)	170 x 192 x 270 mm

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3RW4422-3BC44

Standard wiring provides 29A and 15kW, while delta wiring can reach 50A and 22kW. The control circuit uses spring-loaded terminals, which speeds up wiring installation. The electrical specifications are the same as the screw-terminal models in the same series, only the wiring method differs.

3RW4422-1BC35

This model is compatible with a wide voltage range of 400 to 600V, uses 115V AC control voltage, and its standard wiring can support a 20hp motor at 575V (US standard). It is one of the smallest capacity US standard voltage models in the Siemens SIRIUS 3RW44 series.

3RW4422-1BC34

Standard wiring is 26A, delta wiring is 45A, which can drive a 15hp motor at 460V. It uses screw terminals and has an IP00 protection rating. It is the entry-level model with the lowest rated current in the Siemens SIRIUS 3RW44 series.