3RT2038-1AC20

The Siemens 3RT2038-1AC20 contactor, part of the SIRIUS 3RT2 series, is an S2/3-pole contactor with an AC-3 rated capacity of 80A and 37kW (400V). It operates at 24VAC, features 1NO+1NC auxiliary contacts, 690V insulation, and a mechanical life of 10 million cycles.

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Siemens 3RT2038-1AC20 Contactor, S2 size/3 poles/24VAC

Product Positioning

The Siemens 3RT2038-1AC20 contactor is a SIRIUS 3RT2 series S2 size, 3-pole design, AC-3 rated current 80A, 37kW (400V), and shares the main circuit specifications with the 3RT2038 model in the same series. The Siemens 3RT2038-1AC20 uses 24VAC, 50/60Hz low-voltage control voltage and is equipped with 1NO+1NC auxiliary contacts, making it suitable for applications requiring interlocking control with a 24V circuit and where personnel safety is a high priority.

Core Product Advantages and Features

S2 size 3-pole main contactor

The AC-3 has a rated current of 80A and a power of 37kW (400V). Its main circuit is compatible with other models in the same series.

24VAC low-voltage control

50/60Hz power supply reduces control circuit voltage and improves operational safety.

1NO+1NC auxiliary contact

Provides simple interlocking and status feedback signals.

690V insulation protection

With a mechanical life of 10 million cycles, it has passed multiple international certifications such as UL, CSA, and CCC.

project	Specification
Rated current (AC-3)	80A
Rated power	37kW (400V)
Extreme number	3 poles
Control/coil voltage	24VAC, 50/60Hz
Auxiliary contact configuration	1NO+1NC
Insulation voltage	690V
Mechanical life	10 million times
Terminal type	Screw terminals
Applicable series/sizes	SIRIUS 3RT2, Size S2
Certification	UL, CSA, CCC and other international certifications

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