3RT1976-6A

The 3RT1976-6A is a dedicated main contact replacement kit for the SIRIUS 3RT1076 (S12 frame, 250kW/500A) large contactor. It includes 3 sets of movable and 6 sets of fixed contacts and mounting parts. It is made in Germany and is suitable for maintenance and repair of motor starting circuits.

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Siemens 3RT1976-6A Main Contact Replacement Kit for 3RT1076 S12 Frame 250kW/500A

Product Positioning

The 3RT1976-6A is a main contact replacement kit specifically for the Siemens SIRIUS 3RT1076 large power contactor, not the complete contactor body. This contactor has an S12 frame size and a rated AC-3 250kW/500A, making it one of the heaviest load models in motor starting applications. Frequent start-stop cycles over a long period can cause the main contacts to gradually wear and burn out. In this case, there is no need to replace the entire contactor; simply replacing it with the original contact kit can restore the equipment to its original switching performance, significantly reducing maintenance costs and downtime.

Core Product Advantages and Features

Original factory compatible with 3RT1076

Designed specifically for the SIRIUS 3RT1076 contactor (S12 frame), its dimensional tolerances and conductivity characteristics are fully in line with the original manufacturer's standards, ensuring stable switching.

3 moving and 6 stationary complete contact group

The kit contains 3 sets of movable contacts and 6 sets of fixed contacts, as well as corresponding mounting parts, providing all the main contact components needed for maintenance in one purchase.

Suitable for heavy-duty motor starting

It is designed for the starting circuit of a large motor with a capacity of 250kW and 500A, and can withstand contact wear caused by frequent start-stop cycles.

Made in Germany

Made in Germany, with materials and workmanship meeting Siemens' international quality standards, these parts are a reliable source of spare parts for the maintenance of large contactors.

project	Specification
Product Type	Main contact replacement kit (incomplete contactor)
Applicable contactors	SIRIUS 3RT1076
Base size	S12
Corresponding power	AC-3 250kW
Corresponding current	500A
Kit contents	Movable contacts x3, fixed contacts x6, mounting parts
Extreme number	3 poles
Place of origin	Germany
brand	Siemens
Product Series	SIRIUS 3RT10

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