3RA2921-2A

The 3RA2921-2A is a basic type of Siemens SIRIUS spring terminal block module, with the same function as the 3RA2921-2AA00. It combines a 3RV2.21 circuit breaker and a 3RT2.2 contactor into a single starter, balancing electrical connection and mechanical fixation. It is suitable for 3-pole configurations. Kenxin Motor has stock available and provides selection consultation.

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Siemens 3RA2921-2A Spring Terminal Connection Module

Product Positioning

3RA2921-2A is the basic model of the Siemens SIRIUS series spring terminal block connection module. Its function is the same as the complete order code 3RA2921-2AA00, used to connect a 3RV2.21 circuit breaker and a 3RT2.2 contactor. It allows for quick wiring via spring terminals while simultaneously achieving mechanical fixation, resulting in high assembly efficiency. Kenxin Motors is an authorized Siemens distributor, providing genuine parts.

Core Product Advantages and Features

Basic models of the same series

It belongs to the same spring terminal block module series as 3RA2921-2AA00 and has the same functional positioning.

Electrical and mechanical integration

A single module simultaneously performs electrical conduction and mechanical fixation, saving assembly steps.

Spring terminal wiring

Screwless locking and insert-type spring terminals make wiring faster and more stable.

Paired with 3RV2.21 and 3RT2.2

Specifically designed for this circuit breaker and contactor combination, with high size compatibility.

Original factory goods

Kenxin Motors is an authorized distributor, and all its products are genuine Siemens parts.

project	Specification
Applicable circuit breakers	3RV2.21 series
Applicable contactors	3RT2.2 series
Terminal type	Spring terminals
Extreme number	3 poles
Product Series	3RA2921 Connectivity Module Series

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3RA2921-1BA00

The 3RA2921-1BA00 is a Siemens SIRIUS screw terminal block module, suitable for DC operating voltage. It can combine a 3RV2.1 or 3RV2.2 circuit breaker with a 3RT2.2 contactor into a single starter. It is also compatible with the 3RW3 soft starter and the 3RF34 solid-state contactor. Kenxin Motor provides original factory stock and technical consultation.

3RA2921-1B

The 3RA2921-1B is a basic model of the Siemens SIRIUS screw terminal DC connection module, with the same functional positioning as the 3RA2921-1BA00. It can combine a 3RV2 circuit breaker and a 3RT2.2 contactor into an integrated starter, and is also suitable for the 3RW3 soft starter and the 3RF34 solid-state contactor. Kenxin Motor has stock available and provides selection consultation.