3RT2023-1AH00

The 3RT2023-1AH00 is a Siemens SIRIUS S0 frame electromagnetic contactor with a coil voltage of AC48V, 50Hz. It is a lower voltage control circuit option in the series. The main circuit is AC-3 rated at 9A, 4kW/400V, and comes standard with 1 NO + 1 NC auxiliary contacts. It is suitable for safety circuit designs using a step-down transformer to supply control power.

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Siemens 3RT2023-1AH00 Low Voltage Coil Electromagnetic Contactor AC48V 1NO+1NC

Product Positioning

The 3RT2023-1AH00 is one of the lower-voltage versions in the Siemens SIRIUS 3RT2023 series, with a control voltage of AC48V, 50Hz. It only supports a single frequency and is commonly used in factories where a step-down control transformer is used to reduce the main power supply to 48V before driving the contactor coil. This design reduces the risk of electric shock in the control circuit and improves operator safety. The main circuit maintains the 3RT2023 family's standard AC-3 rated current of 9A and rated power of 4kW/400V. The auxiliary contacts are standardly equipped with 1NO+1NC instantaneous contacts, which can be used for operation feedback or interlocking stop signals. Both the main and auxiliary circuits use screw terminal wiring, and the appearance and installation method are consistent with other coil versions in the series, making it easy to directly replace and use on existing 48V control circuit machines or distribution panels.

Core Product Advantages and Features

AC48V low voltage coil

The control voltage is reduced to 48V, 50Hz. When used with a step-down transformer, the risk of electric shock in the control circuit can be reduced and the operational safety can be improved.

Suitable for existing 48V control circuits

It is compatible with other models in the series, making it easy to replace directly on machines or distribution panels that already use 48V control power.

AC-3 9A/4kW main circuit

Maintaining the standard rating of the 3RT2023 series, with a current of 9A and a power of 4kW at 400V, it is suitable for general motor start-up and shut-down control.

1NO+1NC auxiliary contact

It comes standard with one set of normally open and one set of normally closed instantaneous contacts, along with screw terminals, for easy signal feedback and interlocking wiring.

project	Specification
Rated operating current Ie (AC-3)	9 A (400V)
Rated operating power (AC-3, 400V)	4 kW
Number of poles/frame size	3P, Size S0
Control coil voltage	AC 48V, 50Hz
Auxiliary contact configuration	1NO+1NC (Instantaneous Movement)
Terminal blocks	Screw terminals
Mechanical life	10 million cycles (of similar quality)
Rated insulation voltage Ui	690 V
Protection level	IP20 (Front)
Applicable Standards	IEC/EN 60947-4-1

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