3RT2024-1AC20

Siemens 3RT2024-1AC20 AC contactor, 24V AC coil, 12A
Siemens 3RT2024-1AC20 AC contactor, 24V AC coil, 12A

24V AC 50/60Hz low-voltage coil design, high operational safety, 3-pole 12A/5.5kW load capacity, built-in one set of normally open and normally closed auxiliary contacts, screw terminals.

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Siemens 3RT2024-1AC20 AC contactor, 24V AC coil, 12A
Product Positioning

The 3RT2024-1AC20 is the lowest-voltage 24V AC specification in the Siemens SIRIUS 3RT2 series. It can be driven by both 50Hz and 60Hz power supplies and is commonly found in switchboard designs that emphasize operator safety or are paired with a 24V control transformer. The main circuit maintains the standard specifications of S0 frame, AC-3 rated 12A/5.5kW (400V), 3 poles, and has one set of NO+1 NC auxiliary contacts, which can be directly used for operation feedback or simple interlocking circuits. The screw terminal design facilitates on-site wiring.

Core Product Advantages and Features
24V low-voltage coil is safer
With a coil voltage of only 24V AC, the risk of electric shock in the control circuit is greatly reduced, making it suitable for operation panels that are frequently touched by personnel.
50/60Hz Dual-Frequency Compatibility
The same coil can be stably held at two different power supply frequencies, without being limited by the output region specifications of the equipment.
Built-in basic auxiliary contacts
It comes standard with one set of normally open and one set of normally closed contacts, which can meet the indication and interlocking needs of most control panels.
The main circuit specifications are consistent with the series.
The AC-3 rated 12A/5.5kW and the S0 frame size are the same as those in the same series, which facilitates unified material preparation and management.
project Specification
Coil voltage/frequency 24V AC, 50/60Hz
Auxiliary contact configuration 1 NO + 1 NC (Instantaneous Action)
Applicable occasions Low voltage control circuits, locations requiring human-machine safety considerations
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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