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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 (400 VDC, 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.
* Based on our investigation as of December 2004.
■Model Number Legend
■List of Models
Note 1. Two M4 screws are provided for the contact terminal connection.
Note 2. Two M4 screws are provided for the coil terminal connection.
■Ratings
●Coil
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
RoHS Compliant
Refer to "DC Power Relays Common Precautions".
Models Terminals Contact form Coil rated voltage Model
Coil terminals Contact terminals
Switching/current
conduction models Screw terminals Screw terminals SPST-NO
12 VDC
24 VDC
48 VDC
60 VDC
100 VDC
G9EB-1-B
Item
Rated voltage
Rated current
(mA)
Coil resistance
(Ω)
Must-operate voltage
(V)
Must-release voltage
(V)
Maximum voltage
(V)
Power consumption
(W)
12 VDC 166.7 72
75% max. of rated
voltage
10% min. of rated
voltage
130% of rated
volt-age (at 23°C
within 10 minutes)
Approx. 2
24 VDC 83.3 288
48 VDC 41.7 1,152
60 VDC 33.3 1,800
100 VDC 20 5,000
Item Resistive load
G9EB-1(-B)
Rated load 25 A at 250 VDC
Rated carry current 25 A
Maximum switching voltage 250 V
Maximum switching current 25 A
G9EB-@-@-@-@
— — — —
12 34
1. Number of Poles
1: 1 pole
2. Contact Form
Blank: SPST-NO
3. Coil Terminals
B: M4 screw terminals
4. Special Functions
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G9EB-1 DC Power Relays (25-A Models)
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■Characteristics
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. The insulation resistance was measured with a 500-VDC megohmmeter.
*3. The impulse withstand voltage was measured with a JEC-212 (1981) standard impulse voltage waveform (1.2 × 50 μs).
*4. The mechanical endurance was measured at a switching frequency of 3,600 operations/hr.
*5. The electrical endurance was measured at a switching frequency of 60 operations/hr.
*6. 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 theswitching characteristics.
Item Model G9EB-1(-B)
Contact resistance *1 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 *2
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 *3 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 100 m/s2
Mechanical endurance *4 100,000 operations min.
Electrical endurance (resistive load) *5 *6 250 VDC, 25 A, 30,000 ops. min.
Short-time carry current 50 A (5 min), 40 A (10 min)
Maximum interruption current *6 100 A at 250 VDC (5 times)
Overload interruption *6 50 A at 250 VDC (50 times min.)
Ambient operating temperature −40 to 70°C (with no icing or condensation)
Ambient operating humidity 5% to 85% RH
Weight (including accessories) Approx. 135 g
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G9EB-1 DC Power Relays (25-A Models)
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■Engineering Data
●Maximum Switching Capacity ●Electrical Endurance (Switching
Performance)
●Electrical Endurance (Interruption
Performance)
●Carry Current vs Energizing Time ●Must-operate Voltage and
Must-release Voltage Distributions
●Time Characteristic Distributions
●Vibration Malfunction ●Vibration Resistances
●Shock Malfunction ●Shock Resistance
G9EB-1-B Switching/Current Conduction Models
100
50
30
10
5
3
1
Switching voltage (V)
DC resistive load
30 5010 100 300 500 1,000
Switching current (A)
Switching 250-VDC
resistive load
Switching current (A)
30 5010 100 300 500 1,000
100
50
30
10
5
3
1
0.5
0.3
0.1
Operations (x 10,000)
Switching current (A)
Interrupting 250-VDC
resistive load
10030 5010 300 500 1,000
1,000
500
300
100
50
30
10
5
3
1
Operations
Carry current (A)
10 30 50 100 500300 1,000
100,000
10,000
30,000
50,000
1,000
3,000
5,000
100
300
500
Energizing time (s)
Sample: G9EB-1-B 12 VDC
Number: 50
Must-operate voltage
Must-release voltage
30
25
20
15
10
5
010 20 30 40 50 60
Percentage of rated voltage (%)
Number of Relays
Sample: G9EB-1-B 12 VDC
Number: 5
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
Frequency (Hz)
110305053 100
Unconfirmed area
Confirmed area
Single amplitude (mm)
5.0
4.0
3.0
2.0
1.0
0.0
−1.0
−2.0
−3.0
−4.0
−5.0
Start After test
Must-operate voltage
Must-release voltage
Characteristics were measured after applying vibration
at a frequency of 10 to 55 Hz (single amplitude of
0.75 mm) to the test piece (not energized) for 2 hours
each in 3 directions. The percentage rate of change is
the average value for all of the samples.
Sample: G9EB-1-B 12 VDC
Number: 5
Rate of change (%)
0
Z’
Z
Y
Y’
X
X’
Deenergized
Energized
200
200
150
100
50
50
100
150
Unit: m/s2
Sample: G9EB-1-B
12 VDC
Number: 5
The value at which malfunction occurred was
measured after applying shock to the test piece
3 times each in 6 directions along 3 axes.
G9EB-1-B
12VDC
MADE IN JAPAN
CONTACT:
25A 250VDC
Lot No. 0424Y1-0001
2
43
1
Y’ YX’
X
Z
Z’
5.0
4.0
3.0
2.0
1.0
0.0
−1.0
−2.0
−3.0
−4.0
−5.0
Start After test
Must-operate voltage
Must-release voltage
Sample: G9EB-1-B 12 VDC
Number: 5
Characteristics were measured after applying a shock
of 490 m2/s to the test piece 3 times each in 6
directions along 3 axes. The percentage rate of
change is the average value for all of the samples.
Rate of change (%)
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G9EB-1 DC Power Relays (25-A Models)
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■Dimensions (Unit: mm)
G9EB-1-B
12VDC
MADE IN JAPAN
CONTACT:
25A 250VDC
Lot No. 0424Y1-0001
2
4
1
3
18
8
60
1.2
25
52
18.7
40
58
50
(Mounting hole
dimensions)
13
(Mounting hole dimensions)
49.2
(Coil M4 screw
dimensions)
12.6
(Coil M4 screw
dimensions)
2-M4
2-M4
Two, 4.5 dia.
50±0.1
13±0.1
Two, M4 or 4.8-dia. holes
23
4
1
●Screw Terminal Type
G9EB-1-B Terminal Arrangement/
Internal Connections
(TOP VIEW)
G9EB-1-B
12VDC
MADE IN JAPAN
CONTACT:
25A 250VDC
Lot No. 0424Y1-0001
2
43
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Mounting Hole Dimensions
(TOP VIEW)
Dimension (mm) Tolerance (mm)
10 or lower ±0.3
10 to 50 ±0.5
50 or higher ±1
• Application examples provided in this document are for reference only. In actual applications, confirm equipment functions and safety before using the product.
• Consult your OMRON representative before using the product under conditions which are not described in the manual or applying the product to nuclear control systems, railroad
systems, aviation systems, vehicles, combustion systems, medical equipment, amusement machines, safety equipment, and other systems or equipment that may have a serious
influence on lives and property if used improperly. Make sure that the ratings and performance characteristics of the product provide a margin of safety for the system or
equipment, and be sure to provide the system or equipment with double safety mechanisms.
OMRON Corporation
Electronic and Mechanical Components Company Contact: www.omron.com/ecb Cat. No. J187-E1-01
0812(0207)(O)
Note: Do not use this document to operate the Unit.