3RT2024-1AL20

230V AC coil drive, 3-pole 12A/5.5kW load capacity, built-in 1NO+1NC auxiliary contacts, IP20 protection rating, suitable for general three-phase motor direct starting and control circuit applications.

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Product Introduction

Product Positioning

The 3RT2024-1AL20 is a standard AC contactor in the Siemens SIRIUS 3RT2 series S0 frame. Its coil voltage is 230V AC (50/60Hz universal), main contact rated current is 12A, and AC-3 power is 5.5kW (400V). It can directly handle the direct starting, forward/reverse rotation, or circuit switching of small three-phase asynchronous motors. The unit has one set of NO+1 NC instantaneous auxiliary contacts built-in, eliminating the need for separate auxiliary modules for interlocking or signal feedback wiring. It is equipped with screw terminals and a 35mm standard DIN rail for easy installation on-site in distribution panels and subsequent maintenance.

Core Product Advantages and Features

230V coil is widely compatible

The control voltage uses 230V AC (50/60Hz), which is common in industrial settings and is compatible with the existing PLC output or transformer secondary voltage, thus eliminating the need for additional step-down components.

1NO+1NC auxiliary contact built-in

The main body comes standard with one set of normally open and one set of normally closed auxiliary contacts, which can be directly used for operation indication, interlocking circuits or signal feedback, without the need for an external auxiliary contact socket.

S0 chassis compact design

The S0 standard frame, measuring 45×85×97mm, is compact and offers high installation density, making it suitable for distribution boxes and control panels with limited space.

High mechanical life and impact-resistant design

With a mechanical life of approximately 10 million operations and a rated impulse withstand voltage of 6kV, it meets the reliability requirements of long-term and frequent switching in industrial settings.

project	Specification
Coil voltage/frequency	230V AC, 50/60Hz
Coil operating voltage range	0.8~1.1 Un (50Hz) / 0.85~1.1 Un (60Hz)
Auxiliary contact configuration	1 NO + 1 NC (Instantaneous Action)
Coil start-up/holding power	Approximately 68 VA (start-up) / Approximately 7.9 VA (hold), 50Hz
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