contactor

The Siemens SIRIUS 3RA2316-8XB30-2BB4 is a pre-assembled reversible contactor assembly consisting of two 3RT2016 contactors and an interlocking kit. It has a rated current of 9A, an output of 4kW at 400V, a control voltage of 24VDC, and an IP20 protection rating, making it suitable for use in forward and reverse motor circuits.

The Siemens SIRIUS 3RA1973-2B is a dedicated wiring harness for S12 size star-delta (YD) starters. It includes a connector and fixing screws for connecting delta contactors and star contactors (both 3RT1.7 type). It features output phase sequence conversion and neutral bridging functions, busbar connection, and weighs approximately 2.098 kg.

The Siemens SIRIUS 3RA1973-2A is a busbar connection assembly required for S12 size forward and reverse (reversible) starters. It can connect two 3RT1.7 type contactors in a busbar manner to form a forward and reverse circuit, replacing the traditional loose wiring method. It is quick to install and the circuit is neat. It is suitable for use with base plates and mechanical interlocks.

The Siemens SIRIUS 3RA1972-2F is a dedicated mounting base for star-delta (YD) starters. It can accommodate three 3RT1 series contactors side by side, forming a combination structure of main contactor, delta contactor and star contactor. This allows users to easily assemble star-delta starting circuits according to site requirements. The installation is simple and the structure is stable.

The Siemens SIRIUS 3RA1972-2E is a mounting base for star-delta (YD) starters. It is designed for combinations of three contactors of mixed sizes (S12, S12, and S10). The main contactor and delta contactor are S12 size, while the star contactor is the smaller S10 size. It is suitable for applications with high motor power but low star circuit current.

The Siemens SIRIUS 3RA1972-2A is a dedicated mounting base for reversible (rotational) starters. It can fix two S12 size 3RT1.7 contactors side by side on the same base, making it convenient for users to assemble reversible motor starter circuits. It is usually combined with a busbar assembly and mechanical interlock to form a complete device, with a net weight of approximately 2.322 kg.

The Siemens SIRIUS 3RA1963-2B is a dedicated wiring harness for S10 size star-delta (YD) starters, used to connect delta contactors and star contactors (both 3RT1.6 type). It includes phase sequence conversion and neutral bridging functions, and the busbar connection eliminates the need for a terminal box. It weighs approximately 1.813 kg and is suitable for star-delta starting of small and medium power motors.

The Siemens SIRIUS 3RA1963-2A is a bus connection group required for an S10 size forward and reverse (reversible) starter. It connects two 3RT1.6 type contactors to the input and output sides via a bus, and completes the phase sequence conversion on the output side. The main circuit is a 3-pole design, which is suitable for use with a base plate and mechanical interlock to form a complete circuit.

The Siemens SIRIUS 3RA1962-2A is a dedicated mounting base for reversible (rotational) starters. It can fix two S10 size 3RT1.6 contactors side by side on the same base, which facilitates the assembly of reversible motor starter circuits. It is usually combined with a busbar assembly (such as 3RA1963-2A) and a mechanical interlock to form a complete device.

The Siemens SIRIUS 3RA1954-2A is a cross-size mechanical interlock that can be installed between 3RT10, 3RT12, and 3RT14 series contactors of sizes S6, S10, and S12. It prevents two contactors from engaging simultaneously through a mechanical structure and is commonly used in forward and reverse motor starting circuits as a safety backup mechanism in addition to electrical interlocking.

The Siemens SIRIUS 3RA1953-3G is a dedicated connector for star-delta (YD) starters. It is used to connect the output side of an S6-size 3RT1.5 delta contactor to an S3-size 3RT2 star contactor. It is suitable for use with DC coil versions to form an S6-S6-S3 star-delta starting circuit.

The 3RA1953-3D is the top connection busbar (busbar) of the SIRIUS S6 size reverse starter assembly. It is used with the 3RT1.5 contactor to replace the traditional loose wire connection method, improve wiring efficiency and reliability, and is suitable for large motor forward and reverse control panels.

The 3RA1953-2M is a dedicated busbar connector for S6 size reversible combinations, including a terminal screw kit. It is suitable for 3RT1.5 contactors using busbar wiring (frameless terminals) and assists in completing forward and reverse main circuit connections.

The 3RA1952-2A is a dual contactor mounting base for S6 size reverse starters, capable of supporting two 3RT1.5 contactors simultaneously. It is manufactured in Germany, weighs approximately 1.255 kg, and provides a stable base for assembly.