3RT1075-6AP30

The Siemens SIRIUS S12 large contactor has a main circuit rated current of 400A (approximately 200kW for AC-3) and a coil voltage of 220-240V AC/DC universal. It features a 3-pole main contact with 2 normally open and 2 normally closed auxiliary contacts built-in. It is suitable for starting and stopping large motors and high-current circuits in distribution panels. Kenxin Motor is an authorized agent and can assist in verifying the coil specifications.

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Siemens SIRIUS 3RT1075-6AP30 large power contactor (actual photo)

Product Positioning

The 3RT1075-6AP30 belongs to the Siemens SIRIUS 3RT10 series S12 frame large power contactor, suitable for direct starting and stopping of large three-phase motors and high-current circuit switching in distribution panels. This specification has a coil voltage of 220-240V AC/DC, and features 3-pole main contacts and built-in auxiliary contacts. It boasts a robust structure, long switching life, and is suitable for high-current applications such as factory power panels, pump stations, and air compressor systems.

Core Product Advantages and Features

S12 large frame design

The main circuit has a rated current of 400A, and the AC-3 is approximately 200kW/400V, which is sufficient to handle the high inrush current of large motors during direct starting.

220-240V coil universal design

The AP coil code corresponds to 220-240V AC/DC, suitable for the control voltage of most industrial switchboards.

Built-in 2NO2NC auxiliary contacts

In addition to the 3-pole main contacts, two normally open and two normally closed auxiliary contacts are configured to facilitate linkage with indicator lights, PLC signals, or interlocking circuits.

Busbar main circuit terminals

The main circuit uses a bus terminal design, suitable for high-current wiring, while the auxiliary/control circuits use screw terminals.

Siemens original quality

Compliant with IEC 60947-4-1 standard, with a mechanical life of tens of millions of cycles, ensuring stable and reliable long-term operation.

project	Specification
Base size	S12
Rated operating current AC-1	430 A (400V, 40°C)
Rated operating current/power AC-3	400 A / approximately 200 kW (400V AC)
Extreme number	3 poles, 3 sets of normally open main contacts
Built-in auxiliary contacts	2 normally open + 2 normally closed (2 NO + 2 NC)
Coil voltage code	AP: 220-240V AC/DC
Rated insulation voltage	1000 V AC
External dimensions (height x width x depth)	Approximately 214 x 160 x 225 mm
Main circuit terminals	Busbar (BAR) terminals
Auxiliary/control terminals	Screw terminals
Applicable Standards	IEC 60947-4-1
Remark	The differences in terminals/mechanisms between version 30 and version 36 of the same frame are not clearly stated in the publicly available catalog; please refer to the product nameplate for accuracy.

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3RT1075-6AP36

The 3RT1075-6AP36 is a Siemens SIRIUS large contactor with an S12 frame, rated at 400A (AC-3), with a power of approximately 200kW at 400V. The coil is for 220-240V AC/DC, and it features 2NO+2NC auxiliary contacts, making it a common general-purpose control voltage option.

3RT1075-6AM36

The Siemens SIRIUS S12 large contactor has a rated current of 400A, an AC-3 rated current of approximately 200kW, and a coil voltage of 200-220V AC/DC universal. It features 3-pole main contacts with built-in 2NO2NC auxiliary contacts, making it suitable for large power panels and motor start-stop circuits. Kenxin Motor is an authorized agent and provides selection consultation services.

3RT1075-6AF36

The Siemens SIRIUS S12 large contactor 3RT1075-6AF36 has a rated current of 400A, AC-3 approximately 200kW, and a coil voltage of 110-127V AC/DC universal. It features 3-pole main contacts with built-in 2NO2NC auxiliary contacts and main circuit bus terminals. This is a common and mainstream specification in this series, and Kenxin Motor has authorized sources for it.