Vacuum Circuit Breaker Spring Charge Operating Mechanism

As a high-tech enterprise specializing in the research, production, sales and technical services of vacuum circuit breakers in China，Wenzhou Xifa Electric Power Equipment Co., Ltd. vacuum circuit breaker spring charge operating mechanism strictly complies with domestic and international standards, ensuring stable performance and reliable quality of the product, and has obtained authoritative certification.To ensure the timeliness and safety of circuit opening and closing, the vacuum circuit breaker spring charge operating mechanism is equipped. The energy storage time is ≤ 15 seconds, and the mechanical lifespan can exceed 10,000 times.

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Product Description

Operating Principle

The core principle of the vacuum circuit breaker spring charge operating mechanism lies in spring energy storage, retention, and release to drive fast, reliable switching.

Energy storage: The motor compresses/stretches the closing spring via gears and cams, converting electricity into elastic potential; limit switches stop the motor once fully charged.

Energy retention: Pawls/ratchets lock the spring in standby, ready for activation.

Energy release: On command, the lock releases, and spring energy drives contacts to close (connect circuit) or open (extinguish arc and cut power).

Parameters	Units	Technical Parameters
Closing output energy	J	85-120
Mechanism closing and opening output angle	o	42-46
Auxiliary switch contact logarithm	一	6K6B
Travel switch contact logarithm	一	2K2B
Motor charged time	S	<10
Handled charged moment	N ·m	<20
Motor power	W	40(AC/DC 220V/110V)
Closing electrical magnet resistance(DC)	Ω	130(220V)/33(110V)
Closing electrical magnet resistance(AC)	Ω	56(220V)/10.3(110V)
Opening electrical magnet resistance(DC)	Ω	105(220V)/33(110V)
Opening electrical magnet resistance(AC)	Ω	39(220V)/10.3(110V)
Mechanism endurance	Ts	10000

Advantage:

1.Fast & Reliable: Motor-driven energy storage completes in <10s, with instant energy release ensuring precise, rapid switching (opening time <30ms).

2.Dual Operation: Supports both electric and manual energy storage/actuation, guaranteeing operation even under power outages.

3.Long Service Life: Robust mechanical structure delivers up to 10,000+ operations, with stable performance under short-circuit forces.

4.Safe & Stable: Locking mechanisms prevent accidental release, while coordinated mechanical-electrical control ensures zero misoperation.

5.Low Maintenance: Modular design simplifies part replacement, reducing downtime and operational costs.

Installation

● Before installation, check the appearance and parts for damage, and confirm the model and parameters are consistent.

● Install the mechanism firmly on the breaker body according to the assembly drawing, ensuring concentricity and tight connection.

● Adjust the connecting rod, stroke and limit position correctly to guarantee stable and flexible action.

● Connect the control circuit properly, and test manual energy storage, electric energy storage, closing and opening functions one by one.

Routine Maintenance

● Regularly inspect fasteners to prevent loosening, and keep the mechanism clean and dry.

● Lubricate rotating and friction parts at intervals to ensure smooth operation.

● Check the condition of springs, coils, auxiliary switches and wiring for abnormal heating or damage.

● Test action performance periodically to ensure reliable opening and closing.

● Replace worn parts in time and keep complete maintenance records.

After-sale Service

● Free online / on-site training is provided, covering aspects such as installation and commissioning, daily maintenance, and fault diagnosis, helping the customer's operation and maintenance team quickly acquire operational skills.

● Within 12 months from the date of on-site equipment acceptance and qualification.During the warranty period, core components that are not damaged by human factors (such as energy storage motor, closing and opening coil, spring, auxiliary switch, etc.) will be provided for replacement and repair.