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Page 8
The Toshiba HV6FS vacuum circuit breakers
described in this manual are suitable for use on
systems of 4.8kV and 7.2kV voltage classes that
require interrupting ratings of 16kA and 14kA
respectively and a continuous current rating of
630A. The circuit breakers are intended for use
in limited applications requiring small physical
size and low maintenance.
These breakers are designed for fixed panel
mounting and are available with upper main
circuit terminals (MU type) or rear terminals (ML
type).
The breakers are available as both manual and
motor-operated types. Motor-operated breakers
use a motor to charge the closing springs and to
close the breaker upon command. Both types
can be tripped electrically and also include
undervoltage release.
Arc interruption is accomplished inside sealed
vacuum interrupters mounted on track-resistant
insulators. Vacuum interrupters use low-surge
contact materials that exhibit low current
chopping levels reducing switching overvoltages.
Fig. 1 and Fig. 2 illustrate and identify the major
components of the circuit breakers.
COMPONENTS LEGEND:
1) Manual charging handle
2) Manual trip lever
3) On-Off indicator
4) Spring charge indicator
5) Operations counter
6) Secondary control circuit terminal block
7) Main circuit terminals
8) Auxiliary switch
9) Grounding terminal
10) Manual close lever
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
GENERAL DESCRIPTION
Fig. 1 MU Type Circuit Breaker (Upper Main
Circuit Terminals)
6
3
4
10
2
5
Fig. 2 ML Type Circuit Breaker (Rear Main
Circuit Terminals)
7
9
8
1
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