PROFILE
3-phase "zero crossing" power solid state
unit for control of resistive and inductive
loads, complete with aluminum heatsink
and DIN guide connection. Integrated
device designed for industrial
applications demanding control of high
power levels and frequent switching, with
loads up to 3 x 55A (AC51) at
400/480/600Vac.
Control is logic type (Vdc), signaled by
LEDs. Each phase is controlled by
means of semiconductors .
The constructive elements, special
production process, and new, sturdy
case, provide excellent reliability and
continuity of service. The device is sized
for continuous operation at nominal
current in a 40°C installation
environment.
All versions are protected against
overvoltages and against junction
overtemperature, with signal LEDs and
(optional) solid state alarm output.
The device is supplied complete with
covers to protect against direct contacts
(covers are removable for wiring).
Accessories available: fuses, fuse
holders, support for panel mounting,
thermostats and fans.
TECHNICAL DATA
General features
Category of use: AC51, AC53a
Nominal voltage (Ue):
400Vac (max. range 24...440Vac) (TRIAC)
480Vac (max. range 24..530Vac) (SCR)
600Vac (max. range 24..660Vac) (SCR)
Nominal frequency: 50/60Hz
Isolation nominal voltage (Ui):
600Vac
Peak voltage:
>800Vdc for models with Ue=400Vac
>1200Vdc for models with Ue=480Vac,
Ue=600Vac
Uninterrupted nominal service.
Critical dV/dt OFF-state:
500V/µs for models with Ue=400Vac
1000V/µs for models with Ue=480Vac,
Ue=600Vac
Switching voltage for zero: < 20V
Activation time:
≤
1/2 cycle
Deactivation time:
≤
1/2 cycle
Potential drop at rated current:
≤
1,4Vrms
IP20 protection
Weight : GTZ 25:1100g
GTZ 40, 55:1350g
Control inputs
Voltage of command circuit (Uc):
5..32Vdc
Activation voltage: >4.5Vdc
Deactivation voltage:<3Vdc
Max. input:
18mA @5Vdc - 22mA @32Vdc
Max. reverse voltage: 36Vdc
Outputs
GTZ 25/...
Nominal current (Imax):
AC51: 3x25 A
AC53a: 3x5 A
GTZ 40/...
Nominal current (Imax):
AC51: 3x40 A
AC53a: 3x8 A
GTZ 55/...
Nominal current (Imax):
AC51: 3x55 A
AC53a: 3x15 A
GTZ 25 / 40 / 55
THREE-PHASE SOLID STATE RELAYS WITH LOGIC CONTROL
Main features
• 3-phase alternating current solid state
relay with integrated hestsink
• Zero crossing switching
• 3-phase nominal current
3x25/40/55A
• Nominal voltage up to 600VCArms
Control range:5...32Vdc
• Optoinsulation (input/output)
4000Vrms
• Integrated overvoltage suppressor
• Non-repetitive voltage up to 1200Vp
• Component selection to operate at
max. declared current with
≤
40°C
temperature
• DIN bar mounting with fast clip-on
• In Conformity with EN60947-4-2 and
UL508
Main applications
• Thermoforming
• Plastic extrusion lines
• Industrial ovens and
furnaces
• Heat treatments
• Control applications with
high switching speed
• Mold heating/cooling
control units
• Refrigeration
• Air conditioning
