Siemens 3RT20241AC20 Contactors
3RT20241AC20 Specifications
| Parameter | Value |
|---|---|
| Contact Rating | 12 A |
| Contact Form | 3PST-NO (3 Form A) |
| Coil Voltage | 24 VAC |
| Coil Power | 68 VA |
| Must Operate Voltage | 20.4 VAC |
| Operate Time | 38 ms |
| Base Product Number | 3RT2024 |
| Mounting Type | Chassis Mount, DIN Rail |
| Features | Auxiliary Contacts |
| Operating Temperature | 25°C ~ 60°C |
S0-size contactor in the Siemens 3RT2 family. Rated 12 A continuous through three normally-open power poles. Bulk packaging.
S0 Mechanical and Installation
Fits standard S0 DIN-rail or chassis mounting footprint common to Siemens industrial relay lineup. The auxiliary contact function integrates a 1NO/1NC auxiliary block into the same housing as the power poles.
Coil and Operating Parameters
- Pickup voltage: 20.4 VAC minimum (85% of nominal 24 VAC coil)
- Inrush power: 68 VA coil consumption during pull-in
- Release time: Not listed; operate time 38 ms on pull-in
- Temperature range: 25°C to 60°C — narrower than many industrial contactors; confirm ambient panel conditions
Alternate Coil Voltages in 3RT2024 Family
The following share the 12 A rating, chassis/DIN mounting, and auxiliary contact feature. Readers must qualify suitability independently; parametric differences affect coil sizing and must-operate values.
| MPN | Coil Voltage | Must Operate | Operate Time | Encapsulation |
|---|---|---|---|---|
| 3RT20241AC20 (seed) | 24 VAC | 20.4 VAC | 38 ms | Bulk |
| 3RT20241AC201AA0 | 24 VAC | 20.4 VAC | 40 ms | Box |
| 3RT20241AN20 | 220 VAC | 187 VAC | 38 ms | Bulk |
| 3RT20241AG20 | 110 VAC | 93.5 VAC | 38 ms | Bulk |
3RT20241AN20 matches 68 VA coil power and bulk packaging; differs only in nominal coil voltage (220 VAC vs 24 VAC). Shares the same must-operate-to-nominal ratio (~85%).
3RT20241AG20 matches 68 VA coil power and bulk packaging; differs only in nominal coil voltage (110 VAC vs 24 VAC). Lower must-operate voltage (93.5 VAC) suits higher-ratio control transformers.
3RT20241AC201AA0 offers identical 24 VAC coil but ships in box packaging rather than bulk; operate time 40 ms versus 38 ms.