3RT2024-1AF04

Siemens 3RT2024-1AF04 AC contactor, 110V AC coil, 2NO2NC
Siemens 3RT2024-1AF04 AC contactor, 110V AC coil, 2NO2NC

Driven by a 110V AC coil, with four built-in auxiliary contacts (2NO + 2NC), supporting indication, monitoring, and interlock signal outputs; 3-pole 12A/5.5kW.

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Siemens 3RT2024-1AF04 AC contactor, 110V AC coil, 2NO2NC
Product Positioning

The 3RT2024-1AF04 belongs to the Siemens SIRIUS 3RT2 series S0 frame contactor family. Its coil voltage is 110V AC, and its main circuit specifications are consistent with the same series. The AC-3 rated current is 12A, power is 5.5kW (400V), and it features a 3-pole design. This model is unique in that it has 2 sets of NO + 2 sets of NC (4 instantaneous auxiliary contacts) built into the body, twice the number of the standard model. This makes it suitable for applications where the control panel requires multiple signal outputs, including operation indication, upper-level monitoring feedback, and mechanism interlocking, reducing the cost and wiring time of additional auxiliary contact sockets.

Core Product Advantages and Features
Four sets of auxiliary contacts satisfy complex interlocking.
It has four built-in instantaneous contacts (2NO+2NC), which can cover multiple signal output needs such as indication, monitoring and interlocking.
110V coil power supply compatibility
The coil voltage is 110V AC, which is compatible with common 110V control transformer outputs, eliminating the need for additional step-up or step-down processing.
S0 chassis mounting compatibility
The external dimensions and installation method are consistent with other models in the 3RT2024 series, and the existing plans can be used for spare parts replacement and panel design.
Long service life design
With a mechanical life of approximately 10 million operations and a rated impulse withstand voltage of 6kV, it is suitable for long-term operation in industrial settings.
project Specification
Coil voltage/frequency 110V 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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