3RT1055-6NP36

The 3RT1055-6NP36 is a large contactor from the Siemens SIRIUS 3RT10 series S6 frame. It has an AC-3 current rating of 150A and a power rating of 75kW/400V. The operating mechanism is electronically designed, and it is powered by 200-277V AC/DC with a built-in 24V DC PLC signal interface, which simplifies the wiring of intermediate relays.

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Product Positioning

The 3RT1055-6NP36 is a Siemens SIRIUS 3RT10 series S6 frame large contactor, suitable for controlling 75kW-class three-phase motors. Its electronic operating mechanism accepts 24V DC PLC output signals for direct drive, eliminating the need for intermediate relays and simplifying control panel wiring. Kenxin Motors provides original manufacturer parts and technical consultation to assist customers in quickly completing integration.

Core Product Advantages and Features

S6 Large Frame Design

AC-3 rated at 150A, 75kW/400V, is suitable for direct start control of the main circuit of large three-phase motors.

Electronic operating mechanism

It is powered by 200-277V AC/DC and has a built-in 24V DC PLC signal interface, which can be directly connected to the control system.

Simplify control wiring

It can be directly driven by the PLC output point without the need to install intermediate relays, shortening wiring and debugging time.

2NO+2NC auxiliary contacts

It has 4 built-in auxiliary contacts to meet control needs such as interlocking, feedback and indication.

High durability mechanical life

The mechanical life reaches 10 million operating cycles, ensuring stable and reliable long-term use.

Original manufacturer authorized distributor warranty

Kenxin Motors provides genuine Siemens products, with warranty and technical consultation services.

project	Specification
brand	Siemens
series	SIRIUS 3RT10
model	3RT1055-6NP36
Frame size	S6
Extreme number	3P (3 normally open main contacts)
AC-3 Rated Current/Power	150 A / 75 kW, 400V AC
Auxiliary contacts	2 NO + 2 NC
Operating mechanism	Electronic operating mechanism, powered by 200-277V AC/DC
PLC signal interface	24V DC
External dimensions (height × width × depth)	172 × 120 × 170 mm
net weight	Approximately 3.325 kg
Main circuit wiring method	Busbar (copper busbar) terminals, compatible with 25-120 mm² wires.
Auxiliary/control circuit wiring	Screw terminals
Mechanical life	10 million times

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