3RT1075-6LA06

The 3RT1075-6LA06 is a Siemens SIRIUS large contactor with an S12 frame. It has an AC-3 rated current of 400A, maintaining 400A even at 690V. The coil is fixed at 400V AC (excluding DC). It features 2NO+2NC auxiliary contacts and is suitable for high-voltage, high-current applications.

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Siemens 3RT1075-6LA06 SIRIUS Large Contactor Product Image

Product Positioning

The 3RT1075-6LA06 is a Siemens SIRIUS 3RT10 series S12 large contactor. Its coil is fixed to 400V AC; a DC version is not available. It is particularly suitable for applications where the factory's control power supply has been standardized to 400V AC. Its 400A AC-3 rated current is sufficient for switching between large motors and high-voltage electrical equipment.

Core Product Advantages and Features

S12 Large Stand

The main circuit bus terminal design features high load capacity, making it suitable for heavy-duty applications.

AC-3 rated 400A

It maintains 400A at 690V and 180A at 1000V, covering high-voltage applications.

400V AC fixed coil

The coil voltage is fixed at 400V AC; DC version not available. Wiring is simple.

2NO+2NC auxiliary contacts

Built-in instantaneous auxiliary contact facilitates linkage control and signal feedback.

High mechanical life

With a switching life of 10 million cycles, it complies with IEC 60947-4-1 standard.

Multiple international certifications

Meets IEC, UL, CSA, and other standards, suitable for export and multinational projects.

project	Specification
series	SIRIUS 3RT10
Base size	S12
Extreme number	3 poles
AC-3 rated current	400A (400V/690V)
1000V rated current	180A
AC-3 rated power	Approximately 200kW (400V), 400kW (690V)
Coil/Operating Voltage	400V AC (fixed, no DC version)
auxiliary contacts	2NO+2NC Instantaneous Type
Mechanical life	10,000,000 times
External dimensions (height x width x depth)	214 x 160 x 225 mm
weight	Approximately 9.11 kg
Major Certifications	IEC 60947-1/-4-1/-5-1, ISO 13849-1, UL, CSA

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