🔹 Siemens Magnet Coil – 3TY7403-0AR0 (415V AC, 3TF30–3TF43 Series)
The Siemens 3TY7403-0AR0 is a 415V AC magnet coil for contactors designed for Siemens 3TF series power contactors. It is used to energize the contactor mechanism, enabling reliable switching of electrical circuits in industrial motor control and automation systems.
This coil is compatible with Siemens 3TF30–3TF33 and 3TF40–3TF43 contactors, along with related 3TH, 3TB, and 3TC series depending on frame size. It is widely used in industrial control panels, MCCs, pumps, compressors, and power distribution systems.
When rated voltage is applied, the coil generates a magnetic field that pulls the armature, closing the main contacts. When de-energized, the spring mechanism safely opens the contacts, ensuring controlled switching of electrical loads.
This coil is typically used as a replacement for older Siemens coil versions (such as 3TY4803-0AR0) in maintenance and retrofit applications, making it suitable for industrial repair and spare part replacement.
🔹 Key Features
• Siemens 3TY Series magnet coil
• Model: 3TY7403-0AR0
• Rated control voltage: 415V AC (50Hz) / 500V AC (60Hz)
• Suitable for Siemens 3TF30–3TF33, 3TF40–3TF43 contactors
• Compatible with related 3TH / 3TB / 3TC series contactors
• Electromagnetic operation for reliable switching
• High insulation strength and thermal stability
• Designed for continuous industrial duty
• Easy replacement coil for maintenance use
• Ensures stable pull-in and drop-out performance
• Used in motor control and automation systems
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3TY Series |
| Model Number | 3TY7403-0AR0 |
| Product Type | Magnet Coil for Contactor |
| Rated Control Voltage | 415V AC (50Hz) / 500V AC (60Hz) |
| Compatible Contactors | 3TF30–33, 3TF40–43 |
| Application | Industrial motor control, switching systems |
| Coil Type | AC operated |
| Replacement For | 3TY4803-0AR0 |
| Mounting Type | Internal coil assembly |
| Brand | Siemens |
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