🔹 Siemens Magnet Coil – 3TY7443-0BB4 (24V DC, for 3TF44 / 3TF45 Contactors)
The Siemens 3TY7443-0BB4 is a 24V DC magnet coil designed for Siemens 3TF44 and 3TF45 power contactors. It provides the electromagnetic actuation required for reliable opening and closing of contactor contacts in industrial motor control and automation systems.
When supplied with 24V DC, the coil generates a magnetic field that attracts the contactor armature, closing the main contacts and allowing power to flow to the connected load. Upon removal of the control voltage, the contactor returns to its normal position through the spring-return mechanism.
This replacement coil is commonly used in PLC-controlled systems, motor control centers (MCCs), industrial automation panels, machinery, conveyors, pumps, compressors, and process control applications where 24V DC control circuits are preferred.
🔹 Key Features
• Siemens 3TY Series magnet coil
• Model: 3TY7443-0BB4
• Rated control voltage: 24V DC
• Suitable for Siemens 3TF44 and 3TF45 contactors
• Reliable electromagnetic switching operation
• Designed for DC control circuits and PLC systems
• High insulation strength and thermal stability
• Continuous-duty industrial design
• Stable pull-in and drop-out characteristics
• Easy replacement for maintenance and repairs
• Long service life and dependable performance
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3TY Series |
| Model Number | 3TY7443-0BB4 |
| Product Type | Magnet Coil for Contactor |
| Rated Control Voltage | 24V DC |
| Compatible Contactors | 3TF44, 3TF45 |
| Coil Type | DC Operated |
| Function | Electromagnetic actuation of contactor |
| Mounting Type | Internal coil assembly |
| Application | PLC systems, motor control, automation |
| Brand | Siemens |
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