3RT1275-6AP36

The 3RT1275-6AP36 is a Siemens SIRIUS 3RT12 vacuum contactor with an S12 frame, AC-3 current rating of 400A, and a power rating of approximately 200kW. It is equipped with a 220-240V AC/DC coil, compatible with AC and DC power supplies, and features 2NO+2NC contacts as standard. It uses busbar wiring, weighs approximately 10.5 kg, and is suitable for heavy-duty motor control.

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Siemens 3RT1275-6AP36 vacuum contactor, 220-240V, 400A coil.

Product Positioning

The 3RT1275-6AP36 is the S12 large-frame version of the Siemens SIRIUS 3RT12 vacuum contactor series, featuring vacuum arc-extinguishing technology to improve switching life and reliability. This model's operating coil supports 220-240V AC/DC dual power supply, making it one of the most flexible options among common voltage specifications in Taiwanese industrial environments. Kensun Motors, as an authorized Siemens distributor, provides genuine products and comprehensive technical support.

Core Product Advantages and Features

220-240V AC/DC coil

The operating coil is compatible with both AC and DC power supplies, offering high installation flexibility and wide applicability.

Vacuum arc-extinguishing structure

Replacing traditional air-cooled arc-extinguishing chambers with vacuum tubes extends the lifespan of contactors and reduces maintenance frequency.

S12 Large Stand

The AC-3 has a rated current of 400A and a power of approximately 200kW at 400V, which is sufficient to handle the starting and stopping of heavy-duty motors.

2NO+2NC auxiliary contacts

Four sets of auxiliary contacts meet the control loop requirements for interlocking, feedback, and status monitoring.

Busbar main circuit wiring

Main circuit busbar connection and auxiliary circuit screw terminals, balancing high-current wiring with ease of construction.

Siemens, manufactured in Germany

Stable quality, suitable for industrial applications with stringent requirements for reliability and long-term operation.

project	Specification
Product Type	SIRIUS 3RT12/3TF6 series vacuum contactors
Applicable base	S12
Rated current (AC-3)	400 A
Rated power (400V AC-3)	Approximately 200 kW
Operating coil voltage	220 - 240 V AC (50/60Hz) / DC
Extreme number	3 poles
auxiliary contacts	2NO + 2NC
Main circuit wiring method	Busbar
Auxiliary/control circuit wiring	Screw terminals
Total weight	Approximately 10.5 kg
Packaging dimensions	Approximately 289 x 233 x 272 mm
Manufacturing country	Germany

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