Toshiba VZ Series Vacuum Circuit Breaker

Toshiba Updated: 2007-07-18
Toshiba VZ Series Vacuum Circuit Breaker

Dedication to the most advanced vacuum technology, Toshiba introduces the new VZ series Vacuum Circuit Breakers. By adopting new vacuum arc control technology (SADE) and being designed compactly to ensure reliability, handling ease and safety, the new series of VZ breakers are suitable for all kinds of applications.

Model Number  VZ-20J16  VZ-20M16  VZ-20J25  VZ-20M25  VZ-20P25
Maximum Continuous Current  630A  1250A  630A  1250A  2000A
Rated Voltage  24kV
Rated Interrupting Current  16kA  25kA
Rated Frequency  50/60 Hz
Rated Making Current  40kA  63kA
Rated Short-Time Current  16kA - 3 Sec.  25kA - 3 Sec.
Rated Interrupting Time  Less than 3 Cycles
Out of Phase Breaking Current  25% of Rated Interrupting Current
Basic Impulse Level (BIL)  125kV
AC Withstand Voltage  50kV - 1 Min.
Operation Duty  Standard Duty  O - 3 min. - CO - 3 min. - CO
Rapid Duty  O - 0.3s - CO - 3 min. - CO
Mechanical Life  10,000 Operations
Load Switching Life  10,000 Operations
Auxiliary Contacts  Form  4NO-4NC
Cont. Current  20A
Voltage  220V Max. - 48V Min.
AC Interrupting  AC: Make 20A/Break 10A (110V) at PF 0.35
DC Interrupting  DC: 10A (48V), 5A (110V), 2.5A (220V) at L/R 40 ms
Altitude (Above Derate by ANSI C37.04)  3300 ft (1000 m)
Ambient Temperature  -5 to +40°C
Installation  Fixed or Drawout
Operation  Motor Spring Closing
Opening Time  30 ms (Typical)
No Load Closing Time  40 ms
Operating - Charging Motor Voltage, Current, Charging Time  125Vdc, 5A (starting)/0.5A, 0.01s (starting)/7s
(Optional: 100Vdc/110Vdc & 200/220Vdc, 5A (starting)/0.6A
48/50Vdc, 12A (starting)/1.3A, 0.01s (starting)/7s)
Closing Voltage, Current
125Vdc, 3.2A (Standard)
(Optional: 100Vdc/110Vdc, 3.6/4.0A
48/50Vdc, 6.0/6.3A 200/220Vdc, 1.6/1.7A)
Tripping Voltage, Current
125Vdc, 3.2A (Standard)
(Optional: 100Vdc/110Vdc, 3.6/4.0A
48/50Vdc, 6.0/6.3A 200/220Vdc, 1.6/1.7A)
Weight  298 lb. (135 kg)  320 (145)