The Siemens 3TY74430BF4 is a DC contactor coil / magnet coil designed for compatible Siemens 3TF44 and 3TF45 contactors. It is rated for 110V DC and is used to operate the contactor mechanism when the specified control voltage is applied.
This replacement coil is suitable for industrial motor-control systems, motor starters, electrical control panels, automation systems, manufacturing machinery and OEM equipment. It provides a practical solution for replacing a worn, damaged or faulty coil during contactor maintenance and repair.
A properly functioning contactor coil is essential for reliable electromagnetic operation. Replacing the coil can help restore the switching function of a compatible contactor without replacing the complete contactor, provided the remaining components are in good working condition.
The Siemens 3TY74430BF4 contactor coil is suitable for:
The coil generates the electromagnetic force required to actuate compatible Siemens contactors.
The 3TY74430BF4 is designed specifically for 110V DC control circuits.
It provides a suitable replacement option for compatible 3TF44 and 3TF45 contactors.
Replacing a faulty coil can help restore contactor operation without replacing the complete contactor where appropriate.
Suitable for motor control, automation, machinery and electrical switching systems.
The Siemens 3TY74430BF4 is a dedicated 110V DC contactor coil for compatible 3TF44/45 contactors. It is suitable for OEMs, panel builders, electrical contractors and maintenance teams requiring Siemens contactor spare parts.
Always verify the contactor model, coil part number and control voltage before installation.
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1. What is Siemens 3TY74430BF4?
The 3TY74430BF4 is a Siemens 110V DC contactor coil designed for compatible 3TF44 and 3TF45 contactors.
2. What is the coil voltage?
The coil is rated for 110V DC.
3. Which contactors are compatible with this coil?
It is designed for compatible Siemens 3TF44 and 3TF45 contactors.
4. Can 3TY74430BF4 be used as a replacement coil?
Yes, provided the existing contactor and coil configuration are compatible with this part number.
5. What should I check before purchasing?
Verify the contactor model, Siemens part number and control voltage to ensure compatibility.
| 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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