New Product News
DC Power Relays
G9EJ-1-E
Compact DC Power Relays Capable of
Switching 400 V 15 A DC loads
• Actualize a high capacity interruption through the function of
extinction of magnetic arc by adopting high-efficiency magnetic circuit.
• Actualize improvement of inrush-withstand performance and a
long-life by adopting Omron's own contact driving system.
• Actualize the power saving.
• Small and lightweight type.
Size: H31 mm × W27 mm × L44 mm, Weight: approx. 45 g
RoHS Compliant
Refer to the
Precautions
on page 5.
Model Number Structure
G9EJ-@-@-@-@-@
——— ——
1
2 3 4 5
1. Number of Poles
1: 1 pole
2. Contact Form
Blank: SPST-NO
4. Classification
E: High capacity
5. Approved standards
UVD: UL, CSA, VDE approved standard type
3. Terminal Form
Blank: Tab terminals (#250 terminals)
P: PCB terminals
Ordering Information
Models
Terminals
Coil terminals
Tab terminals
#250
PCB terminals
Contact terminals
Tab terminals
#250
SPST-NO
PCB terminals
Contact form
Rated coil voltage
12 VDC
24 VDC
12 VDC
24 VDC
Model
G9EJ-1-E-UVD
10
G9EJ-1-P-E-UVD
Minimum packing unit
(quantity)
Switching/current
conduction models
Ratings
●
Coil
Rated current
100 mA
50 mA
Coil resistance
120
Ω
480
Ω
Must-operate voltage
60% max. of rated
voltage
Must-release voltage
5% min. of rated voltage
Maximum voltage (See note 3)
130% of rated voltage
(at 23°C within 10 minutes)
Power consumption
Approx. 1.2 W
12 VDC
24 VDC
Rated voltage
Note: 1. The figures for the rated current and coil resistance are for a coil temperature of 23°C and have a tolerance of ±10%.
Note: 2. The figures for the operating characteristics are for a coil temperature of 23°C .
Note: 3. The figure for the maximum voltage is the maximum voltage that can be applied to the relay coil.
●
Contacts
Item
Resistive load
15 A at 400 VDC
15 A
400 V
15 A
Rated load
Rated carry current
Maximum switching voltage
Maximum switching current
1
G9EJ-1-E
Characteristics
Item
Contact resistance *1
Contact voltage drop
Operate time *2
Release time *2
G9EJ-1(-P)-E-UVD
100 mΩ max.
0.2 V max. (for a carry current of 15 A)
50 ms max.
30 ms max.
Between coil and contacts
1,000 MΩ min.
Insulation resistance *3
Between contacts of the same polarity 1,000 MΩ min.
Between coil and contacts
2,500 VAC 1 min
Dielectric strength
Between contacts of the same polarity 2,500 VAC 1 min
Impulse withstand voltage *4
4,500 V
10 to 55 to 10Hz, 0.75 mm single amplitude
Destruction
(Acceleration: 2.94 to 88.9 m/s
2
)
Vibration resistance
10 to 55 to 10Hz, 0.75 mm single amplitude
Malfunction
(Acceleration: 2.94 to 88.9 m/s
2
)
Destruction
490 m/s
2
Shock resistance
Energized
490 m/s
2
Malfunction
Deenergized
98 m/s
2
Mechanical endurance *5
200,000 ops. min.
Electrical endurance *6
400 VDC, 15 A, 10,000 ops. min.
Electrical endurance (condenser load) *6
400 VDC, 25 A, 100,000 ops. min.
Short-time carry current
30 A (20 sec.)
Overload switching
400 VDC, 30A, 100 ops. min.
Maximum interruption current
50 A at 400 VDC (5 times)
Reverse polarity interruption
–15 A at 400 VDC (1,000 times min.)
Ambient operating temperature
–40 to 70°C (with no icing or condensation)
Ambient operating humidity
5% to 85%
Weight
Approx. 45 g
Note: The above values are initial values at an ambient temperature of 23°C unless otherwise specified.
*1. The contact resistance was measured with 1 A at 5 VDC using the voltage drop method.
*2. Measurement conditions: With rated operating voltage applied (without diode), not including contact bounce.
*3. The insulation resistance was measured with a 500 VDC megohmmeter.
*4. The impulse withstand voltage was measured with a JEC-212 (1981) standard impulse voltage waveform (1.2 × 50 µs).
*5. The mechanical endurance was measured at a switching frequency of 3,600 operations/hr.
*6. The electrical endurance was measured at a switching frequency of 60 operations/hr.
DC Power Relays
Engineering Data
●
Switching current (A)
Maximum Switching Capacity
1,000
500
300
●
Operations
Electrical Endurance
(Switching Performance)
10,000
5,000
3,000
1,000
●
Operations
Electrical Endurance
(Interruption Performance)
10,000
5,000
3,000
1,000
500
300
100
50
30
DC resistive load
500
300
100
50
30
10
5
3
Switching 400-VDC resistive
load (positive direction)
100
50
30
10
5
3
1
Interrupting 400-VDC resistive
load (positive direction)
10
5
3
1
10
30
50
100
300
500 1,000
Switching voltage (V)
1
1
3
5
10
30
50
100
10
30
50
100
Switching current (A)
Switching current (A)
●
Carry Current vs. Energizing Time
●
Must-operate Voltage and Must-
release Voltage Distributions
(Number of Relays × Percentage of
Rated Voltage)
Number of Relays
35
30
Number: 64
Must-operate voltage
Must-release voltage
●
Time Characteristic Distributions
(Number of Contacts × Time (ms))
Number of Contacts
Energizing time (s)
100,000
35
30
Operate time
Release time
10,000
25
25
Number: 64
20
1,000
20
15
100
10
10
15
10
5
5
1
1
3
5
10
30
50
100
Switching current (A)
0
20
40
60
80
100
0
5
10
15
20
25
15
Percentage of rated voltage (%)
Time (ms)
2
G9EJ-1-E
Precautions
WARNING
Take measures to prevent contact with charged parts
when using the Relay for high voltages.
DC Power Relays
Precautions for Correct Use
Refer to the relevant catalog for common precautions.
1. The G9EJ Relays' contacts have polarity.
Be sure to perform connections with the correct polarity.
If the contacts are connected with the reverse polarity, the
switching characteristics specified in this document cannot be
assured.
2. Do not drop or disassemble this Relay. Not only may the
Relay fail to meet the performance specifications, it may also
result in damage, electric shock, or burning.
3. Do not use these Relays in strong magnetic fields of 800 A/m
or higher (e.g., near transformers or magnets). The arc dis-
charge that occurs during switching may be bent by the mag-
netic field, resulting in flashover or insulation faults.
4. This Relay is a device for switching high DC voltages. If it is
used for voltages exceeding the specified range, it may not
be possible to interrupt the load and burning may result. In
order to prevent fire spreading, use a configuration in which
the current load can be interrupted in the event of emergen-
cies.
In order to ensure safety of the system, replace the Relay on
a regular basis.
5. If the Relay is used for no-load and/or minute load switching,
the contact resistance may increase and so confirm correct
operation under the actual operating conditions.
6. With this Relay, if the rated voltage (or current) is continu-
ously applied to the coil and contacts, and then turned OFF
and immediately ON again, the coil temperature, and conse-
quently the coil resistance, will be higher than usual. This
means that the must operate voltage will also be higher than
usual, exceeding the rated value ("hot start"). In this case,
take the appropriate countermeasures, such as reducing the
load current or restricting the energizing time or ambient
operating temperature.
7. The ripple percentage for DC relays can cause fluctuations in
the must-operate voltage or humming. For this reason,
reduce the ripple percentage in full-wave rectified power sup-
ply circuits by adding a smoothing capacitor. Ensure that the
ripple percentage is less than 5%.
8. Ensure that a voltage exceeding the specified maximum volt-
age is not continuously applied to the coil. Abnormal heating
in the coil may shorten the lifetime of the insulation coating.
9. Do not use the Relay at a switching voltage or current greater
than the specified maximum values. Doing so may result in
arc discharge interruption failure or burning due to abnormal
heating in the contacts.
10. The contact ratings are for resistive loads. The electrical
endurance with inductive loads is inferior to that of resistive
loads. Confirm correct operation under the actual operating
conditions.
11. Do not use the Relay in locations where water, solvents,
chemicals, or oil may come in contact with the case or termi-
nals. Doing so may result in deterioration of the case resin or
abnormal heating due to corrosion or contamination of the
terminals. Also, if electrolyte adheres to the output terminals,
electrolysis may occur between the output terminals, result-
ing in corrosion of the terminals or wiring disconnections.
12. Be sure to turn OFF the power and confirm that there is no
residual voltage before replacing the Relay or performing wir-
ing.
13. The distance between crimp terminals or other conductive
parts will be reduced and insulation properties will be lowered
if wires are laid in the same direction from the contact termi-
nals. Use insulating coverings, do not wire in the same direc-
tion, and take other measures as required to maintain
insulation properties.
14. Use either a varistor, or a diode plus Zener diode as a protec-
tive circuit against reverse surge in the relay coil. Using a
diode alone will reduce the switching characteristics.
15. Use two M3 screws to mount a Relay with tab terminals. (The
tightening torque is 0.98 N·m.)
16. Manually mount Relays with PCB Terminals. Do not use auto-
matic soldering for them.
Do not bend the terminals to secure the Relay to the PCB.
17. A Relay with PCB Terminals weighs approximately 45 g.
Be sure that the PCB is strong enough to support it.
18. For the PCBs, we recommend dual-side through-hole PCBs
to reduce solder cracking from heat stress.
19. The coil terminals (A in the figure) and contact terminals (B in
the figure) on Relays with PCB terminals have charged metal
parts. Also, the shaded part in the following diagram may also
be charged. When you use the Relay, make sure that there is
no metal pattern on the corresponding part of the PCB.
Detail of Area A
Detail of Area B
(1)
1.2
A
6.3
B
6.3
(1)
6
3
9
Charged metal part
5
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