3RT2024-1AB00

24V AC low-voltage coil basic model, 3-pole 12A/5.5kW load capacity, built-in one set of normally open and normally closed auxiliary contacts, screw terminals, S0 standard frame size.

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Product Introduction

Product Positioning

The 3RT2024-1AB00 is the standard model of the Siemens SIRIUS 3RT2 series 24V AC coil contactor. It features an S0 frame main circuit, AC-3 rated current of 12A, rated power of 5.5kW (400V), and a 3-pole design. Compared to the enhanced 24V version (2NO+2NC) in the same series, this model has one set of NO + one set of NC instantaneous auxiliary contacts, representing a more streamlined basic configuration. It is suitable for control panel applications where the number of auxiliary contacts is not high and cost and installation space are important considerations. It features a screw terminal design and can be mounted on a 35mm standard DIN rail.

Core Product Advantages and Features

24V AC low voltage coil

With a coil voltage of 24V AC, it is the preferred choice for control circuits with high operational safety and is suitable for use with a 24V control transformer.

Simplified 1NO+1NC contact configuration

It has one set of normally open and one set of normally closed auxiliary contacts to meet basic interlocking or indication needs, and the model selection is more cost-effective.

S0 chassis standard compatible

Its external dimensions and installation method are consistent with other models in the 3RT2024 series, which facilitates unified planning and spare parts management.

Stable and durable industrial design

With a mechanical life of approximately 10 million operations and an IP20 protection rating, it is suitable for long-term use in general industrial distribution box environments.

project	Specification
Coil voltage/frequency	24V AC
Auxiliary contact configuration	1 NO + 1 NC (Instantaneous Action)
Applicable motor circuit current (AC-3, 400V)	12 A
Rated operating power (AC-3, 400V)	5.5 kW
Number of poles/frame	3-pole (3P) / S0
Dimensions of the outer casing (width × height × depth)	45 × 85 × 97 mm
Terminal type	Screw terminals
Rated insulation voltage Ui	690 V
Rated impulse withstand voltage Uimp	6 kV
Protection level	IP20 (Front Side and Terminals)
Mechanical life	Approximately 10 million times (typical)
Ambient temperature	-25°C ~ +60°C
Acceptable conductor wire diameters (main/auxiliary circuits)	1~10 mm² / 0.5~2.5 mm²

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