Siemens 3RT20261AV60 S0 Contactor
Specifications
| Parameter | Value |
|---|---|
| Contact Rating | 25 A |
| Contact Form | 3PST-NO (3 Form A) |
| Coil Voltage | 480VAC |
| Coil Power | 87VA |
| Must Operate Voltage | 408 VAC |
| Mounting | Chassis Mount, DIN Rail |
| Operating Time | 40 ms |
| Operating Temperature | 25°C ~ 60°C |
| Encapsulation | Bulk |
| Features | Auxiliary Contacts |
The 3RT2026 base series uses size S0 housings and ships with one normally open and one normally closed auxiliary contact block. The 87VA inrush coil draw supports branch-circuit switching at the rated 480VAC system voltage.
Application Fit for Motor Loads
Voltage Rating Considerations
The 480VAC coil targets industrial three-phase systems where control voltage tracks line-to-line magnitude. The must-operate threshold of 408 VAC leaves approximately 15% margin against nominal coil voltage—this matters for motor starter configurations where long control runs or voltage drop in underdamped circuits can delay dropout.
Coil Power and Contactor Sizing
With 87VA sealed draw, the 3RT20261AV60 requires a control transformer or appropriately rated power supply. At 25 A contact rating, this series is suited for the lower end of standard motor feeder tables; verify coordination with upstream overload relay settings if integrating into a motor branch.
Comparison with Siemens 3RT2026 Coil Variants
| MPN | Coil Voltage | Must Operate | Coil Power | Contact Config |
|---|---|---|---|---|
| 3RT20261AV60 | 480VAC | 408 VAC | 87VA | 1NO/1NC |
| 3RT20261AV00 | 400VAC | 320 VAC | 77VA | 1NO/1NC |
| 3RT20261AT60 | 600VAC | 510 VAC | 87VA | 1NO/1NC |
| 3RT20261AR60 | 440VAC | 374 VAC | 79VA | 1NO/1NC |
Each shares the same 25 A contact rating, DIN-rail/chassis mount form factor, and 40 ms operate time. The 400VAC variants (AV00, AV04) reduce must-operate voltage to 320 VAC and sealed coil power to 77VA—useful where control voltage is limited to standard 380–415V systems. The 600VAC AT60 lifts must-operate to 510 VAC, addressing higher system voltages with identical contact geometry.