Siemens 3TY7403-0AG2 AC Magnet Coil
The 3TY7403-0AG2 is an interchangeable field-replacement coil intended for panel-level integration with Siemens contactors; it ships as a box-packaged component and requires matching the coil voltage rating to the target contactor's control-circuit voltage before installation.
Compatibility and Physical Specifications
| Spec | Value |
|---|---|
| Accessory Type | Magnet Coil |
| Base Product Number | 3TY7403 |
| For Use With | 3TB40–44, 3TF30–33, 3TF40–43, 3TH3, 3TH4 Series Contactors |
| Package | Box |
| Encapsulation | Box |
| RoHS | ROHS3 Compliant |
| Product Status | Active |
The coil is factory-rated for dual-frequency AC operation at 50/60 Hz and is packaged individually in a box. The compatible contactor series span small-frame (3TF30) through large-frame (3TB44) devices, covering both 3TF and 3TH designations that appear in legacy and current Siemens catalog listings.
Voltage Ratings Across 3TY7403 Family
The seed part operates at 110 V AC. Siemens offers the same base coil in the following ratings for identical contactor families:
| MPN | Voltage |
|---|---|
| 3TY7403-0AC2 | 24 V AC |
| 3TY7403-0AD2 | 42 V AC |
| 3TY7403-0AJ2 | 115 V AC |
| 3TY7403-0AK2 | 120 V AC |
| 3TY7403-0AG2 | 110 V AC |
| 3TY7403-0AN2 | 220 V AC |
| 3TY74030AL2 | 230 V AC |
| 3TY7403-0AP2 | 240 V AC |
Coil selection must match the control-circuit voltage at the installation site; the 3TY7403 base part number is shared across all ratings, so procurement can reference the universal base number plus the voltage suffix.