Dongfa Intelligent, a factory in China producing DC 220V Closing and Tripping Coil Lead Wire Type, builds this electromagnetic component to trigger closing and opening actions inside vacuum circuit breaker operating mechanisms. The product is engineered for momentary energisation. Its external reset spring and adjustable brass push rod simplify on-site servicing, making it ideal for OEM switchgear production and aftermarket coil retrofits. Every finished unit passes resistance and dielectric withstand testing before shipment to guarantee consistent electrical performance across power system installations.
This coil uses an externally mounted rear reset spring. Maintenance technicians can visually inspect spring fatigue, deformation or fracture without disassembling the coil assembly. When spring replacement becomes necessary, only the spring fixing end needs removal. This reduces equipment downtime for power plants and substations that demand continuous, reliable power delivery.
The brass push rod integrates a locking adjustment nut. Rotating the nut fine-tunes push rod extension length and initial position to match operating mechanisms from different manufacturers or production batches. After calibration, the locking nut secures the setting and prevents position shift caused by repeated impact from circuit breaker switching cycles.
6x threaded holes arranged in two symmetrical rows across the top surface improve mounting stability against mechanical shock during breaker operation. Users can install using four or six holes according to the hole layout of the target operating mechanism, improving compatibility for replacement jobs. Bolts fitted with spring washers are recommended to resist vibration loosening. Each threaded hole is individually inspected during machining for hole spacing and perpendicularity.
The DC 220V Closing and Tripping Coil Lead Wire Type comes with black multi-strand copper leads. Your team can solder or crimp the wires to match your cabinet wiring layout. This connection type fits your existing assembly process without extra changes to wiring standards. You can route wires freely inside the breaker mechanism for stable long-term operation.
Plug-in coils use socket terminals for faster assembly during mass production. However, tight space inside the mechanism or low-quality sockets may cause poor contact. Plug-in coils with 131.5Ω resistance have the same electrical performance, only differing in wiring structure.
Choose lead wire coils if your factory already uses soldering and has enough space for wiring inside the mechanism. Plug-in coils work better when you prioritize fast assembly and reliable sockets. Dongfa Intelligent supplies both types and offers technical suggestions based on your mechanism model.
The DC 220V Closing and Tripping Coil Lead Wire Type operates at rated DC220V. At 20°C ambient temperature, coil resistance measures 131.5Ω with ±5% tolerance. Under rated voltage, steady-state current reaches approximately 1.67A and instantaneous power sits near 368W. As a short-time operating component, the coil should only receive power for tens to hundreds of milliseconds during switching events. Continuous long-duration energisation will damage the coil and must be avoided.
| Parameter | Specification |
| Product Name | DC220V Closing/Opening Coil (Lead Wire Type, Yellow Coil) |
| Operating Voltage | DC220V |
| Coil Resistance | 131.5Ω |
| Resistance Accuracy | ±5% (20°C reference) |
| Steady-State Current | Approximately 1.67A |
| Instantaneous Power | Approximately 368W (short-time duty) |
| Bobbin | Yellow flame-retardant insulating bobbin |
| Push Rod | Brass with locking adjustment nut |
| Reset Structure | Rear external stainless steel reset spring |
| Lead Wire | 2 black multi-strand copper wires |
| Mounting | 6 top threaded holes, two symmetrical rows |
| Housing | U-shaped galvanized metal housing |
| Applicable Standard | GB high voltage electrical standard |
| Application | High voltage vacuum circuit breaker closing/opening mechanism |
| Certification | ISO9001 Quality Management System |
The DC 220V Closing and Tripping Coil Lead Wire Type is widely deployed in power plants, substations and high voltage switchgear assemblies as the actuation unit for vacuum circuit breaker closing and opening mechanisms.
Before confirming compatibility for replacement projects, prepare the below technical information:
Our engineering team reviews all parameters before production to eliminate mismatched installation or abnormal breaker operation after replacement.
We offer pre-sales coil selection, technical document supply, order progress tracking and 24-hour after-sales response. One-stop procurement for coils and complete switchgear is available.
A1: Electrical performance remains identical between the two styles. The DC 220V Closing and Tripping Coil Lead Wire Type uses lead wire termination for flexible wiring paths and suits manufacturers with mature soldering workflows, while plug-in coils use socket terminals for faster assembly.
A2: Technicians can visually inspect spring fatigue or deformation without coil disassembly. Spring replacement can be completed quickly, lowering maintenance labour and outage duration.
A3: It enables fine adjustment of push rod position to match varied operating mechanisms, and locks the final position to prevent shifting under repeated breaker switching impact.
A4: Yes, users can select four or six holes based on the mechanism mounting layout. Spring washers are recommended to reduce risks of vibration loosening.
A5: Direct substitution is not advised. Changed resistance alters operating current and electromagnetic force, potentially causing irregular switching or failure to actuate. Submit your original coil specifications for technical matching.
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No. 281, Wei 18th Road, Yueqing Economic Development Zone, Yueqing, Wenzhou, Zhejiang, China
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