57
R E LI AG E A R® LV SG
LO W VO LTAG E S W I TC H G E A R
Switchgear accessories
Future circuit breaker compartments
Breaker compartments designed for future use
are complete and ready to use. These breaker
compartments have a steel panel to cover the
door cutout, Figure 92. To prepare the circuit
breaker compartment for use, remove the steel
outer cover.
Warning:
Terminals behind the steel barrier may be
electrically hot.
—
92
Future circuit breaker
compartment
—
92
—
93
—
93
Key interlocks shown
in cradle mounted
accessory
Circuit breaker key interlock
General
A circuit breaker key interlock is available to provide
protection against unauthorized operation. See
Figure 93. The key interlock is mounted on the right
hand side sheet of the cradle.
The typical interlock system is designed so that the
key may be removed from the lock only when the
breaker is tripped. The key actuates a cam that
elevates a lever in the cradle which engages with
the trip bar of the circuit breaker thus rendering
the breaker in a trip free state.
A cradle equipped with a key interlock system will
reject a breaker that has not been properly
configured for cradle mounted key interlock
interaction. Said breaker will require modification,
see instruction manual
Key interlock operation check
The operation of the key interlock should be
checked as follows:
1. With the breaker in the CONNECT position,
manually trip the breaker. This then allows the
key interlock to activate a trip free status of the
breaker.While the breaker is in the trip free state
the key can be removed. The breaker will remain
trip free until the key is returned and the lock
rotated.
2. If desired, the breaker may be moved to either
the TEST or DISCONNECT position while the its
held in a trip free position. In these positions,
the breaker cannot be operated for checking
or maintenance.
Please contact the factory for guidance on
modifying the factory installed cradle mounted key
interlocks.
Padlocking in CONNECT, TEST or DISCONNECT
The circuit breaker's racking mechanism can be
padlocked to prevent access. The racking
mechanism can be padlocked with the breaker in
any position or without the breaker installed. Up to
three padlocks of a diameter of 8mm can be used.
Size
Type
Global code
E2.2
Kirk lever MP E2.2 3p
ReliaGear LV SG
1SDA114350R1
E4.2
Kirk lever MP E4.2 3p
ReliaGear LV SG
1SDA114351R1
E6.2
Kirk lever MP E6.2 3p
ReliaGear LV SG
1SDA114352R1
Table 9 - Breaker Kirk lever kit ordering details
DANGER
WARNING
CAUTION
NOTICE