Product Details Portlet

G9EJ-1-E DC Power Relays

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適合
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ModelsTerminalsContact formRated coil voltageModelMinimum packing unit
(quantity)
Coil terminalsContact terminals
Switching/
current conduction models
Tab terminals
#250
Tab terminals
#250
SPST-NO12 VDCG9EJ-1-E-UVD10
24 VDC
PCB terminalsPCB terminals12 VDCG9EJ-1-P-E-UVD
24 VDC
Ratings
Coil
Rated voltageRated currentCoil resistanceMust-operate voltageMust-release voltageMaximum voltage(See note 3)Power consumption
12 VDC100 mA120 Ω60% max. of rated voltage5% min. of rated voltage130% of rated voltage
(at 23°C within 10 minutes)
Approx. 1.2 W
24 VDC50 mA480 Ω
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
ItemResistive load
Rated load15 A at 400 VDC
Rated carry current15 A
Maximum switching voltage400 V
Maximum switching current15 A

Characteristics
ItemG9EJ-1(-P)-E-UVD
Contact resistance *1100 mΩ max.
Contact voltage drop0.2 V max. (for a carry current of 15 A)
Operate time *250 ms max.
Release time *230 ms max.
Insulation resistance *3Between coil and contacts1,000 MΩ min.
Between contacts of the same polarity1,000 MΩ min.
Dielectric strengthBetween coil and contacts2,500 VAC 1 min
Between contacts of the same polarity2,500 VAC 1 min
Impulse withstand voltage *44,500 V
Vibration resistanceDestruction10 to 55 to 10Hz, 0.75 mm single amplitude
(Acceleration: 2.94 to 88.9 m/s2)
Malfunction10 to 55 to 10Hz, 0.75 mm single amplitude
(Acceleration: 2.94 to 88.9 m/s2)
Shock resistanceDestruction490 m/s2
MalfunctionEnergized490 m/s2
Deenergized98 m/s2
Mechanical endurance *5200,000 ops. min.
Electrical endurance *6400 VDC, 15 A, 10,000 ops. min.
Electrical endurance(condenser load) *6400 VDC, 25 A, 100,000 ops. min.
Short-time carry current30 A (20 sec.)
Overload switching400 VDC, 30A, 100 ops. min.
Maximum interruption current50 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 humidity5% to 85%
Weight(including accessories)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.
(Unit: mm)
G9EJ-1-E-UVD
Mounting Hole Dimensions
(TOP VIEW)


Note: Be sure to connect terminals with the correct polarity.
Coils do not have polarity.


Mounting Hole Dimensions

Dimension (mm)Tolerance (mm)
10 or lower±0.3
10 to 50±0.5


G9EJ-1-P-E-UVD
Mounting Hole Dimensions
(TOP VIEW)


Note: Be sure to connect terminals with the correct polarity.
Coils do not have polarity.


Mounting Hole Dimensions

Dimension (mm)Tolerance (mm)
10 or lower±0.3
10 to 50±0.5

Warning

Take measures to prevent contact with charged parts when using the Relay for high voltages.

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 discharge that occurs during switching may be bent by the magnetic 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 emergencies. 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 continuously applied to the coil and contacts, and then turned OFF and immediately ON again, the coil temperature, and consequently 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 supply circuits by adding a smoothing capacitor. Ensure that the ripple percentage is less than 5%.
8. Ensure that a voltage exceeding the specified maximum voltage 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 terminals. 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, resulting 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 wiring.
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 terminals. Use insulating coverings, do not wire in the same direction, and take other measures as required to maintain insulation properties.
14.Use either a varistor, or a diode plus Zener diode as a protective 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 automatic 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.