🔹 Siemens Magnet Coil – 3TY7443-0BF4 (110V DC, for 3TF44 / 3TF45 Contactors)
The Siemens 3TY7443-0BF4 is a 110V DC magnet coil designed for Siemens 3TF44 and 3TF45 power contactors. It provides the electromagnetic force required to operate the contactor mechanism, ensuring reliable switching performance in industrial control and automation systems.
When energized with 110V DC, the coil creates a magnetic field that pulls the contactor armature, closing the main contacts and allowing power to flow to the connected equipment. Upon de-energization, the spring-return mechanism safely opens the contacts, ensuring dependable operation.
This replacement coil is widely used in industrial automation panels, motor control centers (MCCs), process control systems, power distribution networks, pumps, compressors, and machinery applications where DC control voltage is required.
🔹 Key Features
• Siemens 3TY Series magnet coil
• Model: 3TY7443-0BF4
• Rated control voltage: 110V DC
• Suitable for Siemens 3TF44 and 3TF45 contactors
• Reliable electromagnetic switching operation
• Designed for DC control and automation circuits
• High insulation strength and thermal stability
• Continuous-duty industrial construction
• Stable pull-in and drop-out characteristics
• Easy replacement for maintenance applications
• Long service life and dependable performance
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3TY Series |
| Model Number | 3TY7443-0BF4 |
| Product Type | Magnet Coil for Contactor |
| Rated Control Voltage | 110V DC |
| Compatible Contactors | 3TF44, 3TF45 |
| Coil Type | DC Operated |
| Function | Electromagnetic actuation of contactor |
| Mounting Type | Internal coil assembly |
| Application | Motor control, automation, process control |
| Brand | Siemens |
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