3RT2024-1AB04

Siemens 3RT2024-1AB04 AC contactor, 24V AC coil, 2NO2NC
Siemens 3RT2024-1AB04 AC contactor, 24V AC coil, 2NO2NC

The 24V AC low-voltage coil has four built-in auxiliary contacts (2NO + 2NC), providing twice the signal output of the standard model. It is suitable for low-voltage control panel designs with numerous interlocking circuits.

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Siemens 3RT2024-1AB04 AC contactor, 24V AC coil, 2NO2NC
Product Positioning

The 3RT2024-1AB04 is an enhanced auxiliary contact version of the Siemens SIRIUS 3RT2 series 24V low-voltage coil contactor. Its main circuit specifications are consistent with the same series: S0 frame, AC-3 rated 12A/5.5kW (400V), 3-pole design. The biggest difference from the basic 24V model is the built-in 2 sets of NO + 2 sets of NC (four instantaneous auxiliary contacts). It is suitable for applications requiring a 24V safety control power supply and where the control panel needs to output multiple indicators and interlocking signals simultaneously, reducing the need for external auxiliary contact sockets and wiring.

Core Product Advantages and Features
24V low voltage with 4-contact design
The coil only requires 24V AC to drive, and it also has 4 auxiliary contacts (2NO+2NC) to balance operational safety and signal output.
No need to purchase auxiliary contact socket separately
The four auxiliary contacts are integrated into the main body, saving the purchase cost and installation space of external modules.
S0 chassis has good compatibility.
It shares the same shape and mounting holes as other models in the 3RT2024 series, which facilitates standardized material preparation and quick replacement.
Industrial-grade durable specifications
With a mechanical life of approximately 10 million operations and a rated impact withstand voltage of 6kV, it meets the requirements for long-term production line operation.
project Specification
Coil voltage/frequency 24V AC
Auxiliary contact configuration 2 NO + 2 NC (Instantaneous action, 4 contacts in total)
Advantage of the number of contact points Compared to the standard version, it has one more set of NO+1 NC and eliminates the need for auxiliary contact sockets.
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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