3RT1066-2AP36

The Siemens 3RT1066-2AP36 is a large S10 frame power contactor with a rated current of 300A (AC-3) and a power of 160kW at 400V. It is equipped with a 220-240V AC/DC coil and 2NO+2NC auxiliary contacts. The actual measured weight of the whole unit is about 6.52 kg. It is suitable for motor control centers and large power distribution systems.

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Siemens 3RT1066-2AP36 SIRIUS S10 large contactor 300A 220-240V coil

Product Positioning

The 3RT1066-2AP36 is a large-scale power contactor with a Siemens SIRIUS S10 frame, primarily used for starting, stopping, and power switching control of heavy-duty motors. This model has an AC-3 rated current of up to 300A and can switch loads up to 160kW at 400V. It features a wide-range 220-240V AC/DC coil and supports both AC and DC control power supplies. It comes standard with 2NO+2NC auxiliary contacts, facilitating the construction of interlocking circuits and operation monitoring signals, making it a commonly used core component for large switchboard designers.

Core Product Advantages and Features

300A/160kW high current switching

AC-3 rated current 300A, can switch to a 160kW large motor load under 400V.

220-240V AC/DC coil

Wide-range coils are compatible with common AC/DC control power supplies, offering greater flexibility in selection and wiring.

2NO+2NC auxiliary contacts

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

The entire machine weighs approximately 6.52 kg.

Robust and durable structure, suitable for long-term high-load operation.

S10 Large Standard Frame

It shares the same mounting dimensions as other large contactors in the same series, which facilitates panel design and spare parts management.

Modular design

It can be equipped with auxiliary contact sockets, mechanical interlocks and other accessories to expand its functions.

project	Specification
brand	Siemens
series	SIRIUS 3RT10
model	3RT1066-2AP36
Frame size	S10
Extreme number	3P
AC-3 Rated Current/Power (400V)	300A / 160kW
Auxiliary contacts	2NO+2NC
Coil Specifications	220-240V AC/DC, 50-60Hz
Total weight	Approximately 6.52 kg
External dimensions (height x width x depth)	210 x 145 x 202 mm
Applicable Standards	IEC 60947-4-1

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3RT1066-0LA06

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