3RT1275-6LA06

The 3RT1275-6LA06 is a Siemens SIRIUS 3RT12 vacuum contactor with an S12 frame, AC-3 rated current of 400A, and a power of approximately 200kW at 400V. It is equipped with a 400V AC operating coil, 3 poles with 2NO+2NC auxiliary contacts, and busbar wiring. It is suitable for heavy-load control of large motors.

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Siemens 3RT1275-6LA06 SIRIUS Vacuum Contactor S12 Base 400A

Product Positioning

The 3RT1275-6LA06 is a vacuum contactor belonging to the S12 large-frame type in the Siemens SIRIUS 3RT12 series. It uses vacuum arc extinguishing technology instead of traditional air arc extinguishing, resulting in a long switching life and low maintenance requirements. This version is equipped with a 400V AC operating coil, a 3-pole structure, and an AC-3 rated current of 400A, making it suitable for high-power motor control circuits in pumping stations, fans, and large conveying equipment. As an authorized distributor, Kenxin Motors provides genuine product warranty and complete technical support.

Core Product Advantages and Features

Vacuum arc extinguishing technology

Replacing traditional air-type arc-extinguishing chambers with vacuum tubes offers a longer switching life, eliminates arc sputtering, and is suitable for applications requiring frequent opening and closing.

S12 Large Stand

It is one of the largest frame sizes in the Siemens SIRIUS 3RT12 series, with an AC-3 rated current of up to 400A, capable of handling high-power motor loads.

400V AC coil design

The -6LA06 version is equipped with a 400V AC operating coil, suitable for direct drive from existing 400V control power supplies in the factory.

2NO+2NC auxiliary contacts

Standard configuration includes 2 sets of normally open and 2 sets of normally closed auxiliary contacts, facilitating the linkage control circuit and interlocking protection design.

Busbar main circuit wiring

The main circuit uses a busbar connection method, which is suitable for high-current wiring and high-power panel integration.

Siemens original quality

Made in Germany, meets international certification standards, and is suitable for industrial environments with stringent reliability requirements.

project	Specification
Product Type	SIRIUS 3RT12 Series Vacuum Contactors
Applicable base	S12
Rated current (AC-3)	400 A
Rated power (400V AC-3)	Approximately 200 kW
Operating coil voltage	400 V AC
Extreme number	3 poles
auxiliary contacts	2NO + 2NC
Main circuit wiring method	Busbar
Operating frequency	50/60 Hz
Manufacturing country	Germany

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