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Repetitive overcurrent t=1 s: ≤ 35Arms
Non-repetitive overcurrent t=20ms:200Ap
Current drop at nominal voltage and
frequencies: ≤ 8mArms
2
t for fusing t=1-10ms: ≤ 200A
I
Critical dl/dt: ≥ 100A/µs
Voltage drop at nominal current: ≤1,45Vrms
Critical dV/dt off-state: ≥ 1000V/µs
I th = 15A
GQ - 25 -
Nominal current :
AC51: 25Arms; AC53: 5Arms
Min load current: 0,3Arms
Repetitive overcurrent t=1 s: ≤ 60Arms
Non-repetitive overcurrent t=20ms: 300Ap
Current drop at nominal voltage and
frequencies: ≤ 8 mArms
2
t for fusing t=1-10ms: ≤ 450A
I
Critical dl/dt: ≥ 100A/µs
Voltage drop at nominal current: ≤ 1,45Vrms
Critical dV/dt off-state:≥ 1000V/µs
I th = 25A
GQ - 50 -
Nominal current :
AC51: 50Arms; AC53: 15Arms
Min load current: 0,3Arms
Repetitive overcurrent t=1 s: ≤ 125Arms
Non-repetitive overcurrent t=20ms: 600Ap
Current drop at nominal voltage and
frequencies: ≤ 8mArms
2
t for fusing t=1-10ms: ≤ 1800A
I
Critical dl/dt: ≥ 100A/µs
Voltage drop at nominal current: ≤1,35Vrms
Critical dV/dt off-state: ≥ 1000V/µs
I th = 50A
GQ - 90 -
Nominal current
AC51: 90Arms; AC53: 20Arms
Min load current: 0,5Arms
DIMENSIONS
Dimensions in mm, (inc)
Repetitive overcurrent t=1 s: ≤ 150Arms
Non-repetitive overcurrent t=20ms: 1500 Ap
Current drop at nominal voltage and
frequencies: ≤ 10mArms
2
2
t for fusing t=1-10ms: ≤ 11200A
s
I
Critical dl/dt: ≥ 100A/µs
Voltage drop at nominal current:≤ 1,35Vrms
Critical dV/dt off-state: ≥ 1000V/µs
I th = 90A
(*) Only versions: GQ-XX-24-X-1
Insulation
Nominal insulation voltage
2
Input/output:: ≥ 4000 Vac
s
Nominal insulation voltage
Output/case: ≥ 2500 Vac
Insulation resistance
Input/output: ≥ 10
Insulation resistance
Output/case: ≥ 10
Insulation capacity Input/Output: ≤ 8pF
Insulation capacity Output/case: ≤ 100pF
Ambient conditions
• Ambient temeparure: -25...+80°C
• Storage Temperature: -55...+100°C
2
s
• Maximum relative humidity: 50% a 40°C
• Maximum installation height: 2000 slm
• Pollution level: 3
Thermal features
GQ - 15 - / GQ - 25 -
Junction Temperature:
Rth junction/case:
Rth junction/ambient:
2
s
GQ-XX-48-X-1
Ω
10
Ω
10
≤ 125°C
≤ 1,25 K/W
≤ 12 K/W
(*) See installation notes
*Apply thermoconductive
paste
GQ - 50 -
Junction Temperature:
Rth junction/case:
Rth junction/ambient:
GQ - 90 -
Junction Temperature:
Rth junction/case:
Rth junction/ambient:
Solid State Relay Dissipated Power
Calculation
Single phase state relay
P
GQ .. 15/25 = 1,45 . Irms [W]
d
P
GQ .. 50/90 = 1,35 . Irms [W]
d
IRMS = single-phase load current
Heatsink Thermal Resistance
Calculation
Rth = (90°C - T.amb. max) / P
where P
= dissipated power
d
Max. amb. T = max air temperature
inside the electrical cabinet.
Use a heatsink with thermal resistance
inferior to the calculated one (Rth).
Installation notes
The device must be protected by a high
speed fuse (accessory).
Applications with power solid state relays
must also have a switch to isolate the
power line.
Protect the solid state relay against over-
heating by using a heatsink (accessory).
The heatsink must be sized according to
room temperature and load current (see
technical data).
Heatsink installation procedure:
Raise the guard to access the
fastening hole or the terminals
≤ 125°C
≤ 0,65 K/W
≤ 12 K/W
≤ 125°C
≤ 0,3 K/W
≤ 12 K/W
d
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