198 Solid State Relays G3NH
Solid State Relays
G3NH
Refer to Warranty and Application Considerations (page 1), Safety
Precautions (page 4), and Technical and Safety Information (page 6).
Switching 75 to 150 A at 240 to 440 VAC
• Easy-to-mount monobl oc k co nstructio n in corporatin g heat si nk.
• Replaceable power cartridge.
• Built-in operation indicator and varistor.
• A series of high-voltage (440 V) models avai lable.
Model Number Structure
■Mode l Number Legend
1. Basic Model Name
G3NH: Solid State Relay
2. Rated Load Power Supply Voltage
2: 200 VAC
4: 400 VAC
3. Rated Load Current
075: 75 A
150: 150 A
4. Terminal Type
B: Screw terminals
5. Zero Cross Function
Blank: Equipped with zero cross function
Ordering Information
■List of Models
The built-in Thyristor Modules can be replaced. Refer to the table on page 200 for the model number.
Note: When ordering, specify the rated input voltage.
1
2
3 4
5
G3NH-@@@@
Isolation Zero cross
function
Indicator Rated output load Rated input voltage Model
Photocoupler Yes Yes 75 A at 100 to 240 VAC 5 to 24 VDC
100 to 240 VAC
G3NH-2075B
75 A at 180 to 440 VAC G3NH-4075B
150 A at 100 to 240 VAC G3NH-2150B
150 A at 180 to 440 VAC G3NH-4150B
Solid State Relays G3NH 199
Specifications
■Rati ngs (at an Ambient Temperature of 25°C)
Input
*G3NH converts the input current into a constant current.
Output
Note: The load current varies depending on the ambient temperature. Refer to Load Current vs. Ambient Temperature under Engineering Data for
details.
■Characteristics
Rated voltage Operating voltage Impedance
(Input current)
Vo ltage level
Must operate voltage Must release voltage
5 to 24 VDC 4 to 30 VDC 5 mA max.* 4 VDC max. 1 VDC min.
100 to 240 VAC 75 to 264 VAC 41 k
Ω±20% 75 VAC max. 20 VAC min.
Model Applicable load
Rated load voltage Load voltage range Load current
(See note.)
Inrush current
G3NH-2075B 100 to 240 VAC 75 to 264 VAC 1 to 75 A 800 A
(60 Hz, 1 cycle)
G3NH-4075B 180 to 440 VAC 150 to 484 VAC
G3NH-2150B 100 to 240 VAC 75 to 264 VAC 1 to 150 A 1,800 A
(60 Hz, 1 cycle)
G3NH-4150B 180 to 440 VAC 150 to 484 VAC
Item G3NH-2075B G3NH-4075B G3NH-2150B G3NH-4150B
Operate time 1/2 of load power source cycle + 1 ms max. (DC input)
3/2 of load power source cycle + 1 ms max. (AC input)
Release time 1/2 of load power source cycle + 1 ms max. (DC input)
3/2 of load power source cycle + 1 ms max. (AC input)
Output ON voltag e d rop 1.6 V (RMS) max.
Leakage current 30 mA max.
(at 200 VAC)
60 mA max.
(at 400 VAC)
30 mA max.
(at 200 VAC)
60 mA max.
(at 400 VAC)
Insulation resistance 100 M
Ω min. (at 500 VDC)
Dielectric strength 2,500 VAC, 50/60 Hz for 1 min
Vibration resistance Destruction: 10 to 55 to 10 Hz, 0.375-mm single amplitude
Shock resistance
Destruction: 500 m/s
2
Ambient temperature Operating: –30°C to 80°C (with no icing or condensation)
Storage: –30
°C to 100°C (with no icing or condensation)
Ambient humidity Operating: 45% to 85%
Weight Approx. 1.8 kg Approx. 3.0 kg
200 Solid State Relays G3NH
Engineering Data
Load Current vs. Ambient Temperature One Cycle Surge Current: Non-
repetitive
Note: Keep the inrush current to half the rated value if it occurs
repeatedly.
Input Current vs. Input Impedance
Operation
■Replacement Parts
G32A-N Thyristor Module
If the thyristor module is damaged, replace it with a new one.
G3NH-@075B, G3NH-@150B
G3NH-@150B
G3NH-@075B
G3NH-@075B, G3NH-@150B
200
150
100
75
10080604020 300−20−30
50
37
25
60
0
G3NH-@150B
G3NH-@075B
Vertical
mounting
Horizontal mounting
Vertical
mounting
Horizontal mounting
Ambient temperature (°C)
Load current (A)
Inrush current (A. Peak)
Energized time (ms)
G3NH (75 to 264 VAC)
Input current (mA)
Input voltage (V)
Input current (mA)
Input voltage (V)
Input impedance (kΩ)
G3NH (4 to 30 VDC)
Input current
Impedance
Input current
Impedance
Input impedance (kΩ)
Name Applicable
load
Applicable
Relay
Model
Thyristor
module
75 A at 75 to
264 VAC
G3NH-2075B G32A-N2075
75 A at 150 to
484 VAC
G3NH-4075B G32A-N4075
150 A at 75 to
264 VAC
G3NH-2150B G32A-N2150
150 A at 150 to
484 VAC
G3NH-4150B G32A-N4150
Solid State Relays G3NH 201
Replacement
Be sure to turn off the power before replacement.
1. First, remove the four screws (shown below as “A”) and the
transparent protective cover from the relay housing and then
disconnect the wiring.
2. Remove the four screws (shown in the following as “B”) and the
nameplate from the relay housing.
3. Remove the three screws (shown in the following as “C”) from
inside the housing and pull the Base Assembly up to detach. (The
Base Assembly cannot be removed thoroughly because of the
leads connected to the base.)
4. When the Base Assembly is detached, you will see the leads
connected to the built-in thyristor module. Pull the connector to
disconnect the leads. At this point, if any defect exists in any of
the electronic components on the PWB, the SSR may fail again
even after the replacement of the built-in thyristor module. In such
a case, consult OMRON about appropriate remedial action.
5. Remove the two screws (shown in the following as “D”) and take
out the built-in thyristor module.
Assembly of the thyristor module must be performed in the exact
reverse order of the previous disassembly steps 1 to 5.
6. Before mounting the new thyristor module for replacement, wipe
off the silicone grease adhering to the heat sink, keep clean the
jointing surfaces of the heat sink and thy r ist or module, and apply
the new grease (supplied as an accessory) to the jointing
surfaces. Secure the thyristor module to the heat sink with the two
screws “D” and tighten each screw to a torque of 2.45 to
2.94 N·m.
7. Connect the thyristor module to the PWB with the socket. (The
socket may be inserted in either direction.) Assemble the Base
Assembly with the heat sink by aligning the PWB with the PWB
securing groove and the protective cover with the protective cover
securing groove, respectively, while exercising caution not to get
any of the leads caught between the Base Assembly and the heat
sink.
8. Secure the Base Assembly with the three screws “C”. Because a
large current flows into these screw parts, make sure that any of
the screws is not clogged with foreign matter and tighten each
screw to a torque of 4.41 to 4.90 N·m.
9. Check the assembled parts again for any lead caught between
the Base Assembly and heat sink and for proper fitting of the
PWB and protective cover into their respective securing grooves.
Then, replace the nameplate and secure it with the four screws
“B”.
10.Complete the wiring and secure the protective cover with the four
screws “A”.
11.Apply power to the relay and check the relay for proper operation.
A
A
A
A
B
B
B
B
Name plate
C
Base
Connector Protection cover
PWB Connecting to thyristor module
Protection cover
securing groove
D
D
PWB securing groove
Heat sink
202 Solid State Relays G3NH
Dimensions
Note: All units are in millimeters unless otherwise indicated.
The orientation indicated by the external dimensions is not the correct mounting orientation. When opening mounting holes, refer to the mounting
hole dimensions.
Safety Precautions
■Precautions for Corr ect Use
Please observe the following precautions to prevent failure to
operate, malfunction, or undesirable effect on product performance.
Load Connection
Securely tighten the LOAD terminal screws with the torque specified
in the following list after you connect the load to the LOAD terminals.
If the tightening torque is not enough, the terminals will generate
heat.
Mounting
When you locate the G3NH near other equipment, take the heat
resistivity of the equipment into consideration. The temperature of
the G3NH’s heat sink will rise by approximately 50
°C with a rated
current flow through the G3NH.
The G3NH will rise the ambient temperature. When mounting the
G3NH inside a panel, install a fan for proper ventilation.
When closely mounting the G3NH Solid State Relays side by side,
reduce the load current 30% lower than the specified value shown in
the load current vs. ambient temperature graph.
Take proper measures so that the heat sink will be protected from
dust.
8
13
90±0.5
186
8
22
126±0.5
150
135±0.5
120
120
171±0.5
156
156
G3NH-2075B/4075B
G3NH-2150B/4150B
Four, 6.5-dia.
Two,
M6×12
Two,
M3×8
Two,
M3
×8
Four, 6.5-dia.
Two,
M8×16
Mounting Holes
Mounting Holes
Four, 6.5 dia. or M6
Four, 6.5 dia. or M6
Model Tightening torq ue
G3NH-@075B 4.41 to 4.90 N·m
G3NH-@150B 8.82 to 9.80 N·m
In the interest of product improvement, specifications are subject to change without notice.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. K070-E1-05
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