L3692
Tmax T8
10/39
Doc N°
Mod.
Apparatus
Scale
Page N°
1SDH000682R0002
L3885
L5757
1
8
2
3
4
6
5
7
Note
On request, a transparent cover that increases the degree of protection to IP54 can be installed on the front of the circuit-breaker. The cover is
equipped with a key lock.
As an alternative to the transparent cover, a protection can be installed on the manual opening and closing controls so that the push-buttons
can only be operated with the relative tool.
Fig. 14
7.
Instructions for use
7.1 Operating and signalling components
1 Push-button for the manual opening operation
2 Lever for manual loading of the closing springs
3 Mechanical indicator for circuit-breaker open “O” and closed “I”
4 Mechanical indicator for protection release tripped
5 Pushbutton for the manual closing operation
6 Indicator for springs loaded - unloaded
7 Operation counter (to order)
8 Key lock on the closing operation (to order)
Fig.13
2
3
6
Fig. 15
7.2 Circuit-breaker closing and opening procedures
Circuit-breaker operation can be either manual or electrical.
a) Manual operation for loading the closing springs
– Make sure that “O” (circuit-breaker open) is displayed by the indicator
– Make sure that the indicator (6) is WHITE (springs unloaded)
– Repeatedly operate the lever (2) until the colour of the indicator (6)
changes to YELLOW
b) Electrical operation for loading the closing springs
Electrica operation of the circuit-breaker is possible when the following
accessories are present (supplied to order):
– gearmotor for automatic loading of the closing springs
– shunt closing release
– shunt opening release.
The gearmotor automatically reloads the springs after each closing
operation until the yellow indicator appears (6, Fig. 15). If there is a
power failure during the loading operation, the gearmotor stops and
automatically continues with the spring loading operation once the
power returns. However, it is always possible to complete the reloading
operation in the manual mode.
