3RT1056-2NF36

The 3RT1056-2NF36 is a large contactor from the Siemens SIRIUS 3RT10 series S6 frame, with an AC-3 current rating of 185A and a power rating of 90kW/400V. It features 2NO+2NC auxiliary contacts, an electronic operating coil design, smooth operation, and low energy consumption, making it suitable for use in automated control panels and motor control centers.

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Product Positioning

The 3RT1056-2NF36 is a large power contactor with an S6 frame from the Siemens SIRIUS 3RT10 series, designed for direct starting and stopping of 90kW three-phase motors. This model features an electronic operating mechanism, ensuring smooth switching and low coil heat generation, making it particularly suitable for use with PLC or automated control systems. Kenxin Motors provides original factory parts and comprehensive technical consultation to assist customers in selecting the correct model.

Core Product Advantages and Features

S6 Large Frame Design

It can handle the direct starting load of an AC-3 185A, 90kW/400V three-phase motor and is suitable for the main circuit control of large electromechanical equipment.

Electronic operating mechanism

It adopts an electronic (solid-state) coil driving method, which is stable in operation and low in energy consumption, reducing the coil heating problem caused by frequent switching.

2NO+2NC auxiliary contacts

It has 4 built-in auxiliary contacts, which can provide signal feedback and interlock control at the same time, simplifying the design of control loop.

High durability mechanical life

With a mechanical lifespan of 10 million operating cycles, it significantly reduces replacement frequency and subsequent maintenance costs.

Original manufacturer warranty

Kenxin Motors is an authorized distributor of Siemens, providing genuine products and complete after-sales technical support.

project	Specification
brand	Siemens
series	SIRIUS 3RT10
model	3RT1056-2NF36
Frame size	S6
Extreme number	3P (3 normally open main contacts)
AC-3 Rated Current/Power	185 A / 90 kW, 400V AC, 50/60Hz
AC-1 rated current	215 A, 400V AC
Auxiliary contacts	2 NO + 2 NC
Operating mechanism	Electronic (solid-state) operating coil
Operating voltage range	Approximately 96-127V DC (corresponding to AC127V rating)
External dimensions (height × width × depth)	172 × 120 × 170 mm
Main circuit wiring method	Busbar (copper busbar) terminals
Auxiliary/control circuit wiring	Screw terminals
Mechanical life	10 million times
Operating temperature range	-25°C ~ 60°C

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