3RT2023-2AC20

The 3RT2023-2AC20 is an AC24V (50/60Hz) coil version with spring-loaded terminals, 1NO+1NC auxiliary contacts, and a body weight of approximately 440.6 grams. It is suitable for low-voltage AC control circuits.

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Siemens 3RT2023-2AC20 AC24V Spring Terminal 1NO+1NC 9A/4kW Electromagnetic Contactor

Product Positioning

The 3RT2023-2AC20 is a rare low-voltage AC coil version of the SIRIUS 3RT2 S0 frame contactor. The coil has a rated voltage of 24V and can handle 50/60Hz dual-frequency power supplies, making it suitable for machine designs powered by safety isolation transformers or with special control voltages. The main circuit maintains the standard S0 frame 9A/4kW (400V) specification, with all three main contacts being normally open. The auxiliary contacts include one set of normally open and one set of normally closed contacts. The terminals use a spring-press design, allowing direct wire insertion for wiring. This model weighs approximately 440.6 grams and is suitable for DIN rail or panel mounting in distribution boxes.

Core Product Advantages and Features

AC24V low voltage coil

With a rated coil voltage of only 24V and support for 50/60Hz dual frequency, it is suitable for low-voltage control circuits supplied by isolation transformers, reducing the risk of operator exposure.

Spring-loaded terminal blocks

Both the main circuit and the auxiliary circuit use spring-loaded terminals, eliminating the need for screwdrivers during wiring, which can shorten panel assembly time and reduce the risk of loosening.

1NO+1NC auxiliary contact

It comes standard with one set of normally open and one set of normally closed instantaneous auxiliary contacts, which can simultaneously obtain interlock signals and operation instructions.

Lightweight design

Weighing approximately 440.6 grams, the unit features a compact S0 frame, making it suitable for control panels and DIN rail mounting in situations with limited space.

project	Specification
model	3RT2023-2AC20
Coil rated voltage	AC 24 V, 50/60 Hz
Coil type	AC electromagnetic coil, dual-frequency design
Auxiliary contact configuration	1 NO + 1 NC (Instantaneous Type)
Wiring method	Spring clamp screwless terminals
Rated operating current Ie (AC-3, 400V)	9 A
Rated operating power (AC-3, 400V)	4 kW
Main contact pole number	3-pole (3NO)
Contactor size class	S0
Body weight	Approximately 440.6 grams
External dimensions (width x height x depth)	45 x 85 mm, depth approximately 97 mm (AC coil) or 107 mm (DC coil) depending on coil type.
Rated insulation voltage Ui	690 V
Mechanical life	10 million cycles

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