Product Details Portlet

G9EB-1 DC Power Relays(25-A Models)

DC Power Relays Capable of Interrupting High-voltage, High-current DC Load

  • Utilizes a unique gas-filled, fully sealed, non-ceramic construction achieved by using resin with a metal case. This reduces the need for special processing and materials that were required with previous models, resulting in a low-cost relay that is both compact and lightweight.
  • Smallest and lightest in its class at 25 × 60 × 58 mm and approximately 135 g. This is approximately half the volume and a third of the weight of other DC Power Relays in the same class (400VDC, 25 A).*
  • The unique design of the contact switching component and permanent magnet for blowing out the arc eliminates the need for polarity in the main circuit (contact terminal). This improves ease of wiring and installation, and contributes to providing failsafe measures against incorrect wiring.

Last order Date:Mar.31,2021

RoHS Compliant
Note: This web page provides an excerpt from a datasheet. Refer to Product Datasheet and other applicable documents for more information.
Models Terminals Contact form Coil rated voltage Model
Coil terminals Contact terminals
Switching / current conduction models Screw terminals
(See note 2.)
Screw terminals
(See note 1.)
24 VDC
48 VDC
60 VDC
100 VDC
Note:1. Two M4 screws are provided for the contact terminal connection.
2. Two M4 screws are provided for the coil terminal connection.
Rated voltage Rated current Coil resistance Must-operate voltage Must-release voltage Maximum voltage (See note 3.) Power consumption
12 VDC 166.7 mA 72 Ω 75% max. of rated voltage 10% min. of rated voltage 130% of rated voltage
(at 23ºC within 10 mimutes)
Approx. 2 W
24 VDC 83.3 mA 288 Ω
48 VDC 41.7 mA 1,152 Ω
60 VDC 33.3 mA 1,800 Ω
100 VDC 20 mA 5,000 Ω
Note:1. The figures for the rated current and coil resistance are for a coil temperature of 23ºC and have a tolerance of ±10%.
2. The figures for the operating characteristics are for a coil temperature of 23ºC.
3. The figure for the maximum voltage is the maximum voltage that can be applied to the relay coil.

Item Resistive load
Rated load 25 A at 250 VDC
Rated carry current 25 A
Maximum switching voltage 250 V
Maximum switching current 25 A

Item G9EB-1(-B)
Contact resistance (See note 2.) 30 mΩ max.
Contact voltage drop 0.1 V max. (for a carry current of 25 A)
Operate time 30 ms max.
Release time 15 ms max.
Insulation resistance
(See note 3.)
Between coil and contacts 1,000 MΩ min.
Between contacts of the same polarity 1,000 MΩ min.
Dielectric strength Between coil and contacts 2,500 VAC, 1 min
Between contacts of the same polarity 2,500 VAC, 1 min
Impulse withstand voltage (See note 4.) 4,500 V
Vibration resistance Destruction 10 to 55 to 10 Hz, 0.75-mm single amplitude
(Acceleration: 2.94 to 88.9 m/s2)
Malfunction 10 to 55 to 10 Hz, 0.75-mm single amplitude
(Acceleration: 2.94 to 88.9 m/s2)
Shock resistance Destruction 490 m/s2
Malfunction 100m/s2
Mechanical endurance (See note 5.) 100,000 operations min.
Electrical endurance (resistive load) (See note 6 and 7.) 250 VDC, 25 A, 30,000 ops. min.
Short-time carry current 50 A (5 min),40 A(10 min)
Maximum interruption current (See note 7.) 100 A at 250 VDC (5 times)
Overload interruption (See note 7.) 50 A at 250 VDC (50 times min.)
Ambient operating temperature -40 to 70ºC(with no icing or condensation)
Ambient operating humidity 5% to 85%
Weight (including accessories) Approx. 135g
Note:1. The above values are initial values at an ambient temperature of 23ºC unless otherwise specified.
2. The contact resistance was measured with 1 A at 5 VDC using the voltage drop method.
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.
7. These values are for when a varistor is used as the protective circuit against reverse surge in the relay coil. Using a diode will reduce the switching characteristics.
Note: All units are in millimeters unless otherwise indicated.

Screw Terminal Type

Mounting Hole Dimensions
Terminal Arrangement /
Internal Connections

Dimension (mm) Tolerance (mm)
10 or lower ±0.3
10 to 50 ±0.5
50 or higher ±1