3RT1066-6AP36

Siemens SIRIUS 3RT10 series S10 large frame contactor, AC-3 rated 300A, 160kW (400V), operating coil 220-240V AC/DC, standard 2NO+2NC auxiliary contacts, mechanical life of tens of millions of cycles, suitable for direct start control of large motors.

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Siemens SIRIUS 3RT1066-6AP36 large power contactor (actual photo)

Product Positioning

The 3RT1066-6AP36 is a commonly used main model of Siemens SIRIUS S10 large-frame power contactors. The main circuit has a rated AC-3 rating of 300A and 160kW (400V), and the operating coil is 220-240V AC/DC, suitable for common three-phase 220V control power supply environments in Taiwan. It comes standard with 2NO+2NC auxiliary contacts and boasts a mechanical life of tens of millions of cycles. Kensun Motors provides genuine original parts and complete technical support.

Core Product Advantages and Features

220-240V AC/DC operating coil

It is suitable for common three-phase 220V control power supplies in Taiwan, with an operating range of 0.8~1.1 times the rated voltage.

S10 large frame, 300A/160kW

The main circuit AC-3 is rated at 300A and 160kW (400V), suitable for direct starting of large motors.

Standard auxiliary contacts

Built-in 2NO+2NC instantaneous auxiliary contacts facilitate loop interlocking and signal feedback.

Busbar main circuit terminals

The main circuit adopts a connecting bar design, paired with large cross-sectional area conductors, which is conducive to high current wiring.

Tens of millions of mechanical lifespan

The mechanical operating life reaches 10 million cycles, and it is stable and reliable for long-term operation.

Original factory authorized supplier

Kenxin Motors is an authorized distributor of Siemens, providing genuine products, warranty, and technical support.

project	Specification
series	SIRIUS 3RT10 Large Electric Contactor
Base size	S10
Extreme number	3 poles
Main contact type	3 sets of normally open (NO)
AC-3 Rated Current/Power (400V)	300 A / 160 kW
AC-3 Rated Current/Power (500V)	300 A / 200 kW
AC-3 Rated Current/Power (690V)	280 A / 250 kW
Auxiliary contact	2NO + 2NC instantaneous contact
Operating coil voltage	220...240V AC/DC
Coil operating range	0.8...1.1 times the rated voltage
Mechanical life	Approximately 10 million operation cycles
External dimensions (height x width x depth)	210 x 145 x 202 mm
Main circuit wiring method	Connector bus (busbar)
Applicable Standards	IEC 60947-4-1

Recommend

3RT1066-6AP36-WH

The Siemens SIRIUS 3RT10 series S10 large frame contactor, AC-3 rated 300A, 160kW (400V), operating coil 220-240V AC/DC, has the same electrical specifications as the standard 6AP36. The meaning of the -WH at the end of the model number is not explained in any public documents. It is recommended to confirm the actual version before purchasing.

3RT1066-6AF36

The Siemens SIRIUS 3RT10 series S10 large frame contactor, AC-3 rated 160kW (400V), with an operating coil of 110-127V AC/DC, is suitable for 110V control power distribution panels. It comes standard with 2NO+2NC auxiliary contacts, weighs approximately 6.57 kg, and has a robust structure.

3RT1066-6AB36

The Siemens SIRIUS 3RT1066-6AB36 is a large S10 frame power contactor with a rated current of 300A (AC-3) and the ability to switch 160kW loads at 400V. It features a 23-26V AC/DC wide-range coil and 2NO+2NC auxiliary contacts. The main circuit uses bus terminals, making it suitable for integrated applications with large motors and switchboards.