Shaanxi Longxiang Electrical Co., Ltd. is one of the most reliable manufacturers and suppliers of Spring Operating Mechanism of Circuit Breaker in China. With abundant experience, we are committed to providing high quality customized products with competitive price. Welcome to buy premium Spring Operating Mechanism of Circuit Breaker made in China here from our factory.
Products Description
The spring operating mechanism is an essential element in the circuit breaker. It provides energy to close and open the contacts of the circuit breaker. The circuit breaker spring charge operating mechanism stores energy in the spring when the circuit breaker is in the closed position and releases the energy when the circuit breaker trips.
When the circuit breaker is closed, the spring energy storage mechanism compresses the spring to store energy. When the circuit breaker trips, the spring releases energy and drives the operating mechanism to disconnect the contacts. The energy stored in the spring determines how quickly and how hard the contacts open.
Spring Operating Mechanism Specification
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Model No. |
CT-12/307LX-A |
| Rated working voltage | AC,DC / 110V, 220V |
| Rated working current | 5 /3 / 3.78 / 2.3 / 1.77A |
| Opening Working Voltage Range | 85%-110% Rated Working Voltage |
| Mechanical Life | 10000 times |
| Operation Type | Manual and Motor |
Working Principle
Energy storage: The motor drives the deceleration mechanism, stretches / compresses the closing spring, and converts electrical energy into mechanical potential energy of the spring; Once energy storage is completed, the spring is locked by an energy-holding latch.
Closing: The closing coil is energized to actuate the closing latch and release the closing spring. The spring force drives the transmission linkage to close the moving contact of the circuit breaker; meanwhile, the opening spring is charged.
Closing and holding: Closing holding: A mechanical closing latch retains the closing position; the spring ceases to deliver force once its stored energy is released.
Opening: The opening coil is energized to trip the closing latch, the opening spring releases energy, and the contact is quickly separated to complete the opening.
Comparison of Advantages and Disadvantages
|
Advantages |
Disadvantages |
|
Mature technology, proven reliability, and large-scale use - with high energy for closing and opening, suitable for high current and large capacity circuit breakers |
Multiple parts: motor, gear, multiple springs, numerous connecting rods, various latch locks |
|
Good tolerance to power supply voltage fluctuations; Even in the event of a power outage, it can complete one opening and closing (under the premise of energy storage completion) |
There are many points of mechanical wear and tear, and the mechanical lifespan is low. Regular maintenance, lubrication, and inspection of the lock buckle are required |
|
Universal maintenance parts, familiar to maintenance personnel |
The action has a large impact, high noise, and bulky structure. |
Do you need a reliable spring operating mechanism matched to your VCB? We support OEM & custom modifications. Our products comply with IEC 62271‑100 and GB/T 1984‑2024 standard. Send us your model and technical sheet.
