Pole Mounted Vacuum Circuit Breaker 33-40.5kV,Outdoor Switch-Pole Mounted Vacuum Circuit Breaker 33-40.5kV-Wenzhou Tuyuan Electric Co.,Ltd

The ZW32-40.5 outdoor vacuum circuit breaker adopts a uniquely designed integrated solid-sealed pole column and a highly reliable operating mechanism. This device is primarily used in medium-voltage overhead lines for circuit switching applications. The product features high reliability, maintenance-free operation, long mechanical and electrical service life, compact size, light weight, and easy installation.

No.	Item	Units	Data
1	Rated voltage	kV	40.5
2	Rated current	A	630/1250
3	Rated frequency	Hz	50/60
4	1 min PF withstand voltage (wet) (dry) P to P, P to E / across the breaking distance	kV	80 95 / 95
5	Lightning impulse withstand voltage (peak) P to P, P to E / across the breaking distance	kV	185
6	Rated short circuit breaking current	kA	20/25/31.5
7	Rated short circuit making current (peak)	kA	63/80
8	Rated peak withstand current	kA	63/80
9	4s short-circuit withstand current	kA	25/31.5
10	Rated operating sequence		O-0.3S-CO-180S-CO
11	Number of rated short-circuit breaking current operations	times	30
12	Mechanical life	times	10000
13	Mechanism control voltage	V	AC/DC 220
14	Power-frequency withstand voltage for 1 min (secondary circuit)	kV	2

No.	Item	Units	Data
1	Contact gap	mm	16±1
2	Contact overtravel	mm	3±0.5
3	Opening speed	m/s	1.4-1.8
4	Closing speed	m/s	0.4-0.8
5	Contact closing bounce time	ms	≤5
6	Phase-to-phase center distance	mm	560±2
7	Three-phase opening and closing asynchronism	ms	≤2
8	Resistance of each phase conducting circuit	μΩ	＜80 （with isolator 150）
9	Closing time	ms	≤100
10	Opening time	ms	≤50

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