🔹 Siemens Magnet Coil – 3TY7443-0BM4 (220V DC, for 3TF44 / 3TF45 Contactors)
The Siemens 3TY7443-0BM4 is a 220V DC magnet coil designed for Siemens 3TF44 and 3TF45 power contactors. It provides the electromagnetic actuation required for reliable operation of the contactor, enabling efficient switching of motors and electrical loads in industrial control systems.
When supplied with 220V DC, the coil generates a magnetic field that attracts the contactor armature, closing the main contacts and allowing current flow to the connected equipment. When the control voltage is removed, the spring-return mechanism safely opens the contacts.
This replacement coil is commonly used in industrial automation systems, motor control centers (MCCs), power distribution panels, process control applications, pumps, compressors, conveyors, and machinery installations where DC-operated control circuits are utilized.
🔹 Key Features
• Siemens 3TY Series magnet coil
• Model: 3TY7443-0BM4
• Rated control voltage: 220V DC
• Suitable for Siemens 3TF44 and 3TF45 contactors
• Reliable electromagnetic switching performance
• Designed for DC-operated industrial control circuits
• High insulation strength and thermal stability
• Continuous-duty industrial construction
• Stable pull-in and drop-out characteristics
• Easy replacement for maintenance and repair applications
• Long operational life and dependable performance
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3TY Series |
| Model Number | 3TY7443-0BM4 |
| Product Type | Magnet Coil for Contactor |
| Rated Control Voltage | 220V DC |
| Compatible Contactors | 3TF44, 3TF45 |
| Coil Type | DC Operated |
| Function | Electromagnetic actuation of contactor |
| Mounting Type | Internal coil assembly |
| Application | Motor control, automation, power switching |
| Brand | Siemens |
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