Siemens 3RT20241AN20 Contactors
Engineering verification checklist
- Confirm coil voltage matches control circuit: 220 VAC rated, 187 VAC must-operate threshold
- Verify contact arrangement: 1NO/1NC auxiliary fits the circuit function (compare with 2NO/2NC option 3RT20241AN24 if additional interlocks needed)
- Check mechanical mounting: Chassis/DIN Rail compatible with panel enclosure layout
- Validate 12 A contact rating against load inrush and locked-rotor current requirements
- Confirm operating temperature range 25°C to 60°C suits enclosure ambient conditions
- Verify coil power draw 68 VA is within control transformer or power supply capacity
- Confirm operate time 38 ms is acceptable for timing-critical circuits
- Review must-operate voltage 187 VAC against expected control circuit voltage drop
Contact arrangement variants (3RT20241AN20 family)
The 3RT20241AN20 occupies the S0 form factor within the 3RT2024 base series. All family members share 12 A contact rating, chassis/DIN rail mounting, and auxiliary contact function. The primary differentiator is coil voltage and contact configuration.
| MPN | Coil Voltage | Contact Config | Must Operate | Encapsulation |
|---|---|---|---|---|
| 3RT20241AN20 | 220 VAC | 1NO/1NC | 187 VAC | Bulk |
| 3RT20241AN24 | 220 VAC | 2NO/2NC | 187 VAC | Box |
| 3RT20241AL20 | 230 VAC | 1NO/1NC | 195.5 VAC | Box |
| 3RT20241AN60 | 200 VAC | 1NO/1NC | 187 VAC | Box |
| 3RT20241AU20 | 240 VAC | 1NO/1NC | 323 VAC | Box |
| 3RT20241AM20 | 208 VAC | 1NO/1NC | 176.8 VAC | Box |
| 3RT20241AH20 | 48 VAC | 1NO/1NC | 40.8 VAC | Box |
| 3RT20241AG20 | 110 VAC | 1NO/1NC | 93.5 VAC | Bulk |
| 3RT20241AC20 | 24 VAC | 1NO/1NC | 20.4 VAC | Bulk |
The 2NO/2NC variant (3RT20241AN24) provides twice the auxiliary contact capacity at the same coil voltage. Coil voltage variants span 24–240 VAC; must-operate thresholds scale proportionally.