3RT1056-6LA06

The Siemens SIRIUS 3RT1056-6LA06 is an S6 large contactor body, AC-3 rated 185A, 90kW/400V, 3-pole, 2NO+2NC auxiliary contacts, bus main terminals. The operating coil is not included at the factory; a suitable voltage coil mechanism must be purchased separately. It is suitable for spare parts or custom voltage requirements. Kenxin Motor provides selection consultation.

Share To

Product image of Siemens 3RT1056-6LA06 contactor body (excluding coil)

Product Positioning

The 3RT1056-6LA06 is a large power contactor body in the SIRIUS 3RT10 series S6 frame, designed for applications requiring customized operating voltages or original equipment manufacturer (OEM) spare parts. It does not include an operating coil mechanism at the factory, but can be fitted with a coil module of the corresponding voltage to meet specific needs, offering high flexibility. The 3-pole main contacts, combined with 2NO+2NC auxiliary contacts, meet the wiring requirements of typical motor direct start control panels.

Core Product Advantages and Features

S6 Large Contactor Body

The AC-3 is rated at 185A and can output 90kW at 400V, suitable for direct starting circuits of large motors.

Design without operating coil

The product does not include the coil mechanism at the factory. Corresponding coil modules can be flexibly matched according to the field control voltage to reduce spare parts inventory costs.

Busbar main circuit terminals

The main contacts use a busbar connection, ensuring secure wiring and making them suitable for high-current circuit configurations.

Built-in 2NO+2NC auxiliary contacts

Standard configuration includes 2 sets of normally open and 2 sets of normally closed auxiliary contacts for convenient interlocking control and status feedback wiring.

Siemens genuine products

Kenxin Motors is an authorized Siemens distributor, providing genuine products and comprehensive technical consulting services.

project	Specification
brand	Siemens
series	SIRIUS 3RT10
model	3RT1056-6LA06
Frame size	S6
Extreme number	3 poles
AC-3 rated current	185 A (400V)
AC-3 rated power	90 kW (400V)
AC-1 rated current	215 A (400V/40°C)
Auxiliary contact	2 NO + 2 NC
Main circuit terminals	busbar
Auxiliary circuit terminals	screw type
Operating coil	Not included; requires separate matching of corresponding voltage coil mechanism.
Reference weight	Approximately 2.88 kg (excluding coil)
Reference dimensions	Approximately 172 (height) × 120 (width) × 170 (depth) mm

Recommend

3RT1056-6NB36

The 3RT1056-6NB36 is a Siemens SIRIUS S6 contactor, employing a solid-state electronically operated coil. The coil voltage range is DC 21-27.3V, suitable for 24V DC systems and direct drive of PLC outputs. It features a 3-pole main contact with an AC-3 rated current of 185A and a 90kW output at 400V. It comes standard with 2NO+2NC auxiliary contacts.

3RT1056-6AV36

The Siemens SIRIUS 3RT1056-6AV36 is an S6 large contactor with a coil suitable for 380-420V AC/DC power supply. It has an AC-3 rated capacity of 185A and 90kW/400V, 3 poles, and 2NO+2NC auxiliary contacts. It is suitable for motor starter panels with existing high-voltage control power supplies. Kenxin Motor has stock available for purchase.

3RT1056-6AR36

The Siemens SIRIUS 3RT1056-6AR36 is an S6 large contactor. The coil is suitable for 440-480V AC/DC power supply. The AC-3 rated power is 185A, 90kW/400V, and 132kW at 500V. It has 3 poles and 2NO+2NC auxiliary contacts. It is suitable for motor starters in high-voltage control circuits. Kenxin Motor has stock available for purchase.