Sv8 (VS1) -12 Series Embedded Poles Type Indoor Circuit Breaker

Model NO.: SV8(VS1)-12
Function: Circuit-Breaker Failure Protection
Certification: CE
Rated Voltage: 3.6kv~40.5kv
Rated Short-Circuit Breaking Current: 20/25ka 31.5ka 40ka
Rated Current: 630/1250A 630/1600A
Mechanical Life: 10000times
Rated Thermal Stability of Current: 20/25ka 31.5ka 40
Dynamic Stability Rated Current(Peak): 63ka 80ka 100
Rated Short-Circuit Closing Current(Peak: 63ka 80ka 100
Rated Operating Sequence: 0-0.3s-Co-180s-Co
Rated Thermal Stabilization Time: 4s
Transport Package: Standard Export Carton
Specification: CE
Origin: China
SV8(VS1)-12 Series Embedded Poles Type Indoor High Voltage Vacuum Circuit Breaker
SV8(VS1)-12 Series Embedded Poles Type Indoor High Voltage Vacuum Circuit Breaker
rated voltage 12kV
rated short-circuit breaking current 20/25kA        31.5kA             40kA
rated current 630/1250A   630 1250    1250 1600
                      1600 2000  2000 2500
                       2500 3150       3150
rated thermal stability of current 20/25kA        31.5kA              40
dynamic stability rated current(peak) 63kA              80kA              100
rated short-circuit closing current(peak) 63kA              80kA               100
rated short-circuit breaking current breaking number 50times
frequency tolerance of the secondary circuit voltage(1min) 2000V
rated operating sequence 0-0.3s-CO-180s-CO
rated thermal stabilization time 4S
rated a single/back-to-back electric current breaking device group 630/400A  800/400A(40kA)
mechanical life 10000Times
NO Item Unit Technical Data
1 Rated voltage KV 12
2 1 min power frequency withstand voltage 42
Lighting impulse withstand voltage(peak value) 75
3 Rated Frequency Hz 50
4 Rated current A 630, 1250, 1600, 2000, 2500, 3150, 4000
5 Rated short time withstand current KA 20, 25, 31.5, 40
6 Rated withstand current(peak) 50, 63, 80, 100
7 Rated short-circuit opening current 20, 25, 31.5, 420
8 Rated short-circuit closing current 50, 63, 80, 100
9 Rated duration of short-circuit S 4
10 Contact's clearance    3.5±0.5
11 Contact's travel    9±1/11±1
12 Average opening speed M/s 1.1±0.2
13 Average closing speed M/s 0.6±0.2
14 Opening time Ms 35-60
15 Closing time Ms 20-45
16 Mechanical life Times 30000
17 Rated operating order    O-0.3S-CO-180S-CO(<40KA)
O-180S-CO-180S-CO(≥40KA)

Bluetooth Retro Speaker

The sound quality of small speakers is also good. It does not have the same large speakers and power as HIFI speakers, and its sound quality cannot compete with large speakers due to physical limitations. But for the vast majority of users who are not golden ears, the use of small speakers with tablets and mobile phones is sufficient to meet their hearing needs.


For Bluetooth retro speakers, I personally think that when many people buy speakers, the appearance is the first priority and the function is second.


We focus on retro Bluetooth speakers,It has high energy density, mini size, light weight and diversified shapes;Excellent fast charging performance, support fast charging and other excellent features
with a brand-new design, showing retro nostalgia without losing fashion. It uses a 2.5-inch speaker and has many functions such as FM radio, Bluetooth fast connection, multi-mode switching, and HIFI high fidelity. Wireless Bluetooth 4-10 hours of playback (at 50% volume), which adds to its unique charm.


Retro Speaker,Bluetooth Retro Speaker,Rechargeable Retro Speaker,Portable Retro Speaker

Shenzhen Focras Technology Co.,Ltd , https://www.focrass.com