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