ZN12-40.5kV Series Indoor Vacuum Circuit Breaker

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ZN12-40.5kV Series Indoor Vacuum Circuit Breaker

+86 13388587500

chyukai@126.com

8613388587500

ZN12-40.5kV Series Indoor Vacuum Circuit Breaker
description1
Zipper closure 1/4 zip athletic pullovers for men. Stretchy, lightweight, fast-drying fabric for superior performance. REGULAR FIT - US standard sizes. An athletic fit that sits close to the body for a wide range of motion, designed for optimal performance and all day comfort. FEATURES - Quarter zip closure;Thumbholes on long sleeves to keep them in place during workout
Details
Rated voltage KA 12 12 12 40.5 40.5
2 Rated current A 1250 1600 2000 1600 2000
3 Rated short-circuit breaking current KA 31.5 31.5 31.5 25 31.5
4 Dynamic stability current (peak value) KA 100 100 100    
5 4s thermal stability current (50KA is 3S 1 KA 31.5 31.5 31.5 25 25
6 Rated short-circuit making current (peak value) KA 100 100 100 80 80
7 Rated short-circuit current breaking times times 50 20
8 Rated operating sequence 0.3s-combined opening-180s combined opening
9 Rated lightning impulse withstand voltage (full wave) kV 75 185
10 Rated short-time power frequency withstand voltage (1min kV 42 95
11 Closing time ms ≤75 50-85
12 Opening time ms ≤60（50） 40-85
13 Mechanical life times 20000（1-1V）10000（V-X） 120000
14 Rated current breaking times times 20000（1-1V）10000（V-X） 20
15 Energy storage motor power W 275 275
16 Rated voltage of energy storage motor V 110/220 220/110
17 Energy storage time S ≤15 ≤15
18 Rated voltage of closing solenoid V 110/220 220/110
19 Rated voltage of opening electromagnet V 110/220 220/110
20 Rated voltage of energy storage shunt release v 110, 220 220, 110
21 Rated voltage of closing interlock V 110,  220 220, 110
22 Rated voltage of loss-of-voltage release V 110,  220 220, 110
23 Rated current of overcurrent release A 5 5
24 Auxiliary switch rated current A AC 10 DC 10 DC10
25 Contact stroke mm 11 ± 1 11 ± 1 20±2
26 Contact overtravel mm 8  ± 2 8  ± 2 5±1
27 Closing speed m/s ≤2 0.8-1.4
28 Opening speed m/s 210  1.5 (285±1.5) 1.1-1.8
29 Contact closing and tripping time ms ≤2 ≤3
30 Center distance between phases mm 2101.5 ( 280± 1.5 ) 350±1.5
31 Three-phase contact opening synchronization ms ≤2 ≤2
32 Loop resistance of each phase M Q ≤35 ≤45

 

Description

The ZN12-40.5 type vacuum circuit breaker can be used as the main switch of KYN-40.5, KYN1-35, GBC-35 type and other series of switch cabinets. The circuit breaker is installed on the handcart in the shut-off cabinet as a movable unit. At the same time, the circuit breaker can also be installed in the XGN-40.5 switch cabinet for fixed installation. The circuit breaker mechanism is integrated with the switch and has a dedicated spring energy storage operation The moving mechanism can be operated by AC or DC energy storage, or it can be operated manually

 

Shape and installation dimensions

 

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