Outdoor HV Vacuum Circuit Breaker ZW32-40.5 with Permanent Magnet Technology

Vacuum circuit breaker utilizes vacuum interrupter technology, featuring high breaking capacity, long service life and maintenance-free operation, making it the most ideal protection and control device for medium voltage power systems (10-40.5kV).

Product Description:

This VCB series adopts advanced vacuum interrupter technology and high-quality ceramic housing, demonstrating excellent breaking performance and electrical endurance. Suitable for power system protection and control in power plants, substations and industrial facilities, it features reliable operation even under frequent switching conditions. Compliant with international standards, it’s a key component for modern smart grids.

Product Parameter (Specification)

ZW32-40.5
Number	Items	Unit	Data
01	Rated voltage	kV	40.5
02	Rated current	A	630/1250
03	Rated frequency	Hz	50 or 60
04	Rated short circuit breaking current	kA	25/31.5
05	Rated peak withstand current	kA	63/80
06	short-time withstand current(4s)	kA	25/31.5
07	Rated short circuit breaking current (maximum)	kA	63/80
08	Mechanical life	Times	10000
09	Rated Short-circuit Breaking Current Breaking Times	Times	30
10	Power frequency withstand voltage (1min)：Phase to phase/earth	kV	80/95
11	Lightning impulse withstand voltage(Phase to phase/earth)	kV	185
12	Secondary Circuit AC Withstand Voltage (1min)	kV	2
13	Rated operating sequence		OC-0.1s-CO-3S-CO-6s-CO-60s restore
14	mechanism control voltage	V	AC/DC220
15	contact opening distance	mm	16±1
16	Exceed range(the compress length of contact sping)	mm	4±0.5
17	Average break speed	m/s	1.4~1.8
18	Average closing speed	m/s	0.4~0.8
19	The jump time of contact close break	ms	≤5
20	phase-to-phase center distance	mm	460±2
21	Different period of three-phase break and close break	ms	≤2
22	Resistance of each phase main loop	μΩ	<80
23	Opening time	ms	≤100
24	Closing time	ms	≤50

Product Features：

Excellent breaking performance – Vacuum interrupter ensures no reignition or current chopping
Extra-long service life – Up to 30,000 mechanical operations and 10,000 electrical operations
Intelligent monitoring – Optional condition monitoring module for real-time parameters tracking
Modular design – Easy installation and maintenance, compatible with variousswitchgears