3RT1075-6AB36

The Siemens SIRIUS S12 large contactor 3RT1075-6AB36 has a rated current of 400A, AC-3 power of approximately 200kW, and a coil voltage of 23-26V AC/DC low voltage universal. It features 3-pole main contacts with built-in 2NO2NC auxiliary contacts, making it suitable for safe ultra-low voltage control applications. Kenxin Motor has authorized sources and provides technical consultation.

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Photo of Siemens SIRIUS 3RT1075-6AB36 large power contactor

Product Positioning

The 3RT1075-6AB36 is a Siemens SIRIUS 3RT10 series S12 frame large power contactor. Its coil voltage is a safe ultra-low voltage of 23-26V AC/DC, suitable for control circuits after transformer step-down or applications with special safety requirements. The main circuit load capacity is consistent with other coil versions in the same series, making it suitable for starting and stopping large motors and heavy load switching.

Core Product Advantages and Features

S12 large frame, 400A load capacity

AC-1 has a rated current of 430A, and AC-3 has approximately 400A/200kW; their load-carrying capacity is consistent with other coil versions in the same series.

23-26V Safety Ultra-Low Voltage Coil

AB coil codes correspond to 23-26V AC/DC, suitable for applications requiring safety standards when powered by a step-down transformer.

Built-in 2NO2NC auxiliary contacts

It comes standard with 2 normally open and 2 normally closed auxiliary contacts for easy interlocking, indication, or PLC signal feedback.

Bus main circuit terminals

The main circuit uses bus (BAR) terminals, while the auxiliary/control circuit uses screw terminals.

Actual weight can be verified.

The manufacturer's specifications state that the entire machine weighs approximately 10.445 kg, and the specifications are highly transparent.

Siemens Original Authorization

Kenxin Motors guarantees genuine products and assists in verifying coil voltage and nameplate information upon arrival.

project	Specification
Base size	S12
Rated operating current AC-1	430 A (400V, 40°C)
Rated operating current/power AC-3	400 A / approximately 200 kW (400V AC)
Extreme number	3 poles, 3 sets of normally open main contacts
Built-in auxiliary contacts	2 normally open + 2 normally closed (2 NO + 2 NC)
Coil voltage code	AB: 23-26V AC/DC
Rated insulation voltage	1000 V AC
Total weight	Approximately 10.445 kg
External dimensions (height x width x depth)	214 x 160 x 225 mm
Main circuit terminals	Busbar (BAR) terminals
Auxiliary/control terminals	Screw terminals
Applicable Standards	IEC 60947-4-1

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