Siemens 3RT10666AF360UA0 Contactor
Contact Rating and Electrical Specifications
| Parameter | Value |
|---|---|
| Contact Form | 3PST-NO (3 Form A) |
| Contact Rating | 330 A |
| Coil Voltage | 110 ~ 127 VAC/DC |
| Coil Power | 650 W |
| Operate Time | 95 ms |
| Mounting | Chassis Mount, DIN Rail |
| Operating Temperature | 25°C ~ 60°C |
| Package | Box |
| Features | Auxiliary Contacts |
This NEMA-rated contactor from Siemens' 3RT1 series targets heavy motor-start and power-distribution applications. The 330 A contact rating places it in the upper range of the 3RT10 family, with the auxiliary-contact feature supporting standard overload relay wiring configurations.
Coil Voltage Comparison — 3RT1066 Family
The 3RT1066 base series shares chassis mounting, 650 W coil power, and 300–330 A contacts across multiple voltage classes. Voltage differentiation appears in the sixth and seventh positions of the part number suffix.
| Parameter | 3RT10666AF360UA0 (seed) | 3RT10666AF363PA0 | 3RT1066-6AF36 | 3RT1066-6AB36-0UA0 | 3RT1066-6AP36 | 3RT1066-6AV36 |
|---|---|---|---|---|---|---|
| Coil Voltage | 110–127 VAC/DC | 110–127 VAC/DC | 110–127 VAC/DC | 23–26 VAC/DC | 220–240 VAC/DC | 380–420 VAC/DC |
| Contact Rating | 330 A | 300 A | 300 A | 330 A | 300 A | 300 A |
| Package | Box | Box | Bulk | Box | Box | Box |
| Auxiliary | Yes | 2N | — | Yes | — | — |
| Similarity | — | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
All listed parts share the same 3RT1066 base number, chassis/DIN mounting, and 650 W coil power. Readers must verify contact rating and auxiliary-contact fit for their specific circuit before selection. Voltage class is the primary differentiator across this group; the 110–127 V coil range suits North American control circuits, while 23–26 V variants serve low-voltage control or international markets, and 220–240 V / 380–420 V cover European three-phase systems.
- 3RT10666AF363PA0 differs by 300 A contact rating and adds a 2NO auxiliary contact block.
- 3RT1066-6AF36 is the bulk-pack variant of the same 110–127 V coil; no auxiliary contacts specified.
- 3RT1066-6AB36-0UA0 retains the 330 A contact rating but drops to a 23–26 V coil, retaining auxiliary contacts.
- 3RT1066-6AP36 and 3RT1066-6AV36 scale the same 300 A / 650 W platform to higher three-phase voltages (220–240 V and 380–420 V respectively).
Mechanical and Environmental
The contactor uses chassis or DIN rail mounting compatible with standard S10 form-factor enclosures. Operate time of 95 ms is consistent across the family; no published make/break timing split is available from this record. Operating temperature spans 25°C to 60°C, which is narrower than many industrial contactors—panel thermal management matters in high-density layouts.