FACEPLATE DESCRIPTION
L1 : Phase 1 input
L2 : Phase 2 input
L3 : Phase 3 input
T1 : Phase 1 output
T2 : Phase 2 output
T3 : Phase 3 output
A1 : Control signal (+)
A2 : Control signal (-)
B1 : Alarm output (+) option
B2: Alarm output (-) option
Led1: Red led signal indicator
Led2: Yellow led (alarm overtemperature
junction)
Insulation
Nominal insulation voltage
input/output:
2.5KV ac for models with Ue=400Vac
4KV ac for models with Ue=480Vac,
Ue=600Vac
Nominal impulse withstand voltage
(Uimp): 2500Vac
Ambient conditions
• Working temperature:
-20°C...80°C
• Max. relative humidity: 50% to 40°C
• Max. installation altitude: 1000 slm
• Pollution level : 3
• Storage temperature: -20...85°C
• Class: A (industrial device)
• Suitable for use in pollution degree 2
environmental
Thermal protection
Junction temperature is constantly moni-
tored inside the device. If the maximum
temperature limit is exceeded (T=110°C),
current to the load is interrupted and the
yellow signal LED lights up.
Options
An optional thermal protection alarm out-
put is available. In this case, the alarm is
signaled with an output generated by a
solid state relay (max. 32 VAD/DC,
150mA, resistance ≤15Ωin alarm
state).
Power supply
Fan supply
(only for models GTZ 40/55A):
230Vac 14W (VEN90)
115Vac 14W (VEN91)
Installation notes
Use the high speed fuses specified in the
catalog according to the connection
example provided.
Applications with solid state power units
must also include an automatic safety
switch to cut out the load power line.
For maximum reliability, the device
MUST be installed correctly in the panel
in order to have adequate heat exchange
between the heatsink and the
surrounding air under conditions of
natural convection.
Mount it vertically (max. 10 inclination
from the vertical axis)
• Vertical distance between a heatsink
and the panel wall >100mm
• Horizontal distance between a heatsink
and the panel wall: 20mm at least
• Vertical distance between two heatsink:
300mm at least.
• Horizontal distance between two heat-
sink: 20mm. at least
Check that cable raceways do not reduce
these distances; should it happen, mount
the GTZ overhanging from the panel, so
that the air can flow vertically on the
heatsink without obstables.
• Maximum surrounding air temperature
40°C (for UL).
• Open type equipment
Limits of use
• dissipation of thermal power of device
with restrictions on temperature of instal-
lation site.
• requires exchange with outside air
or an air conditioner to transfer
dissipated power outside the panel.
• installation requirements (distances
between devices to guarantee dissipation
under conditions of natural convection)
• max. voltage limits and derivative
of transients in line, for which the
solid state unit has internal protection
devices.
• presence of dispersion current
< 10mA (max. value with rated voltage
and junction temperature of 125°C).
