5
The circuit breaker is equipped with a combined release (thermal and
electromagnetic).
*ATTENTION
When using the circuit breaker in a group B environment, special devices
should be used to protect against unwanted electromagnetic
interference.
Degree of protection of the circuit breaker case is IP30 in accordance with
IEC 60529, of terminals for connecting external conductors – IP00.
The circuit breaker is intended for use in an environment with pollution
degree 3 according to IEC 60947-1 (conductive pollution is possible or dry, non-
conductive pollution that becomes conductive due to expected condensation).
Specifications
The electromagnetic short-circuit current release should cause the circuit
breaker opening with an error of ±20
% from the operating current value of the
current setting in accordance with table 2.
Additional assembly units for the switch, ordered separately, are shown in
table 4.
The overall and installation dimensions of the switch are shown in figure 1.
The bus sizes of the adapter connections for the switch are shown in figure 2.
The minimum installation distances of the switch are shown in figure 7.
The scope of delivery is shown in table 5.
The circuit diagram of the circuit breaker is shown in figure 6.
The circuit breaker is installed on a metal panel with a thickness of at least
1.5 mm or an insulating panel with a thickness of at least 6 mm and fixed with the
screws included in the delivery.
The time-current characteristics of the switch are shown in figure 5.
Setting temperature of the release – plus 40
°
C. The technical parameters of
the circuit breakers, depending on the type, are given in table 2. Figure 1 shows the
graph of the dependence of the rated current value on the ambient temperature.
The thermal release operates with an inverse time delay and must open the
circuit breaker with an error of ±10 % from operating current value of the IR
thermal release setting in accordance with table 3.
For the switch, you can additionally purchase extended terminals and
adapter tips. The dimensions of the extended terminals and adapter tips for the
V88 are shown in figure 3. The adapter tips are designated as, "For the central
terminal" and represent three straight copper busbars. The extended terminals
consist of one central and two side buses.
Completeness
The connection of the corresponding flexible conductors or busbars is
carried out using the fasteners for connecting the external conductors.
Installation rules
The releases are adjusted and calibrated at the factory and are not
accessible during operation.
K
ARA
T
