Specifications

L2234
L2778
L4681
L5179
Emax
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Doc. No
Model
Apparatus
Scale
Page No
1SDH000460R0002
L5439
Reference figures in the electrical circuit diagrams: YU + D; (7).
The characteristics of the time-delay device are:
Power supply (D):
24-30 V AC/DC
48 V AC/DC
60 V AC/DC
110-127 V AC/DC
220-250 V AC/DC
Adjustable opening time (YU+D): 0,5-1-1,5-2-3 s
Geared motor for automatic closing spring loading (M)
This automatically loads the circuit-breaker operating mechanism closing springs. After circuit-breaker closing, the geared motor
immediately sees to reloading the closing springs.
When there is no power supply or during maintenance work, the closing springs can still be loaded manually (by means of the
special lever on the operating mechanism).
Power supply
24-30 V AC/DC
48-60 V AC/DC
100-130 V AC/DC
220-250 V AC/DC
Operation limits: 85…110% Un
(Norme CEI EN 60947-2)
Inrush power consumption (Ps):
DC = 500 W
AC = 500 VA
Rated power (Pn):
DC = 200 W
AC = 200 VA
Inrush time 0,2 s
Loading time: 4-5 s
Insulation voltage 2500 V 50 Hz (per 1 min.)
It is always supplied with limit contacts and microswitch for signalling closing springs loaded.
Reference figure in the electrical circuit diagrams: M (1)
Mechanical and electrical trip signalling for overcurrent releases
The following signals are available following tripping of the overcurrent release:
a) Mechanical trip signalling for overcurrent releases
This enables a visual signalling on the operating mechanism by pushing the trip pushbutton in when the circuit-breaker has been
opened following tripping of an overcurrent release. The circuit-breaker can only be closed again by putting the pushbutton back
into its normal position included in the standard configuration.
Reference figure in the electrical circuit diagrams: S51 (13).
b) Electrical and mechanical trip signalling for overcurrent releases
This enables a visual signalling on the operating mechanism (mechanical) and remotely (electrically by means of a changeover
switch) of the circuit-breaker being opened following a trip of the overcurrent releases. To reset the circuit-breaker, it is necessary
to reset the mechanical indicator pushbutton.
Reference figure in the electrical circuit diagrams: S51 (13).
c) Coil for resetting the mechanical release trip indicator
This enables a visual signalling on the operating mechanism (mechanical) and remotely (electrically by means of a changeover
switch) of the circuit- breaker being opened following a trip of the overcurrent releases. With this accessory, you can reset the
mechanical indicator with an electronic relay using a remote control and this enables the circuit-breaker to be reset.
Power supply:
24-30 V AC/DC
220-240 V AC/DC
110-130 V AC/DC
Reference figure in the electrical circuit diagrams: S51 (14)
Auxiliary contacts
Auxiliary contacts installed on the circuit-breaker are available to enable an indication of the circuit-breaker’s status. A special
version of the auxiliary contacts is also available (gold plated contacts) for a rated voltage under 24 V (digital signal).
Un In max T
125 V DC 0,3 A 10 ms
250 V DC 0,15 A 10 ms
Un In max cosφ
250 V AC 5 A 0,3