DC Power Relays (25-A Models)
G9EB-1
DC Power Relays Capable of Interrupting Highvoltage, 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.*
• 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. This improves ease of wiring, and contributes to
providing failsafe measures against incorrect wiring.
* Based on our investigation as of December 2004.
Model Number Structure
■ Model Number Legend
G9EB-@-@-@-@
1
2
3
4
1. Number of Poles
1:
1 pole
2. Contact Form
Blank:SPST-NO
3. Coil Terminals
B:
M4 screw terminals
4. Special Functions
Ordering Information
■ List of Models
Models
Terminals
Coil terminals
Switching/current con- Screw terminals (See note 2.)
duction models
Contact form
Coil rated voltage
Model
Contact terminals
Screw terminals
(See note 1.)
SPST-NO
12 VDC
24 VDC
48 VDC
60 VDC
100 VDC
G9EB-1-B
Note: 1. Two M4 screws are provided for the contact terminal connection.
2. Two M4 screws are provided for the coil terminal connection.
DC Power Relays (25-A Models)
G9EB-1
1
Specifications
■ Ratings
Coil
Rated voltage
Rated current
Coil resistance
12 VDC
166.7 mA
72 Ω
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
Must-operate
voltage
75% max. of rated
voltage
Must-release
voltage
Maximum voltage
(See note 3.)
10% min. of rated
voltage
Power
consumption
130% of rated volt- Approx. 2 W
age (at 23°C within
10 minutes)
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%.
2. The figures for the operating characteristics are for a coil temperature of 23°C.
3. The figure for the maximum voltage is the maximum voltage that can be applied to the relay coil.
Contacts
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
■ Characteristics
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
Dielectric strength
Between coil and contacts
1,000 MΩ min.
Between contacts of the same polarity 1,000 MΩ min.
2,500 VAC, 1 min
Between contacts of the same polarity 2,500 VAC, 1 min
Impulse withstand voltage (See note 4.)
Vibration resistance
Shock resistance
4,500 V
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)
Destruction
490 m/s2
Malfunction
100 m/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 70°C (with no icing or condensation)
Ambient operating humidity
5% to 85%
Weight (including accessories)
Approx. 135 g
Note: 1.
2.
3.
4.
5.
6.
7.
2
The above values are initial values at an ambient temperature of 23°C unless otherwise specified.
The contact resistance was measured with 1 A at 5 VDC using the voltage drop method.
The insulation resistance was measured with a 500-VDC megohmmeter.
The impulse withstand voltage was measured with a JEC-212 (1981) standard impulse voltage waveform (1.2 × 50 μs).
The mechanical endurance was measured at a switching frequency of 3,600 operations/hr.
The electrical endurance was measured at a switching frequency of 60 operations/hr.
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.
DC Power Relays (25-A Models)
G9EB-1
Engineering Data
■ G9EB-1-B Switching/Current Conduction Models
30
50
30
10
30
50
100
300
500 1,000
50
3
30
1
10
0.5
5
0.3
3
10
30
50
100
10,000
300
10
500 1,000
30
50
100
Switching current (A)
30
25
Sample: G9EB-1-B
12 VDC
Number: 50
Must-operate voltage
Must-release voltage
20
300
500 1,000
Switching current (A)
Must-operate Voltage and
Must-release Voltage
Distributions
Number of Relays
Energizing time (s)
30,000
Interrupting 250-VDC
resistive load
1
0.1
Carry Current vs Energizing
Time
50,000
300
5
Switching voltage (V)
100,000
500
100
5
1
Switching 250-VDC
resistive load
1,000
10
10
3
Operations
DC resistive load
100
Time Characteristic
Distributions
Number of contacts
100
50
Electrical Endurance
(Interruption Performance)
Electrical Endurance
(Switching Performance)
Operations (x 10,000)
Switching current (A)
Maximum Switching
Capacity
60
50
Operate time
Sample: G9EB-1-B
12 VDC
Number: 50
Release time
40
5,000
3,000
15
30
1,000
10
20
5
10
500
300
100
10
30
50
100
300
500 1,000
Carry current (A)
0
10
20
30
40
50
60
0
4
8
12
DC Power Relays (25-A Models)
16
20
Time (ms)
Percentage of rated voltage (%)
G9EB-1
3
Vibration Resistance
Rate of change (%)
Single amplitude (mm)
Vibration Malfunction
1
Sample: G9EB-1-B 12 VDC
Number: 5
0.9
Unconfirmed area
0.8
0.7
0.6
0.5
5.0
4.0
Sample: G9EB-1-B 12 VDC
Number: 5
3.0
2.0
1.0
Must-release voltage
0.0
Confirmed area
0.4
−1.0
0.3
−2.0
0.2
−3.0
0.1
−4.0
−5.0
0
1
3
5
10
30
50
100
Start
Frequency (Hz)
1
T:
2
B TAC DC
-1- CON250V
EB 25A 001
G9VDC N Y1-0
12 IN JAPA 0424
E
Lot
MAD
No.
3
Z
4
200
X
Y' Y
X'
150
X
100
Z
50
100
Sample: G9EB-1-B 12 VDC
Number: 5
3.0
2.0
1.0
Must-operate voltage
Must-release voltage
−2.0
X'
150
200
Y'
The value at which malfunction occurred was
measured after applying shock to the test piece
3 times each in 6 directions along 3 axes.
Energized
4.0
−1.0
50
Deenergized
5.0
0.0
0
Z'
Rate of change (%)
Shock Resistance
Z'
Y
After test
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
Shock Malfunction
Unit: m/s2
Sample: G9EB-1-B
12 VDC
Number: 5
Must-operate voltage
−3.0
−4.0
−5.0
Start
After test
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.
4
DC Power Relays (25-A Models)
G9EB-1
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Screw Terminal Type
G9EB-1-B
Two, 4.5 dia.
50
(Mounting hole
dimensions)
1.2
Terminal Arrangement/
Internal Connections
(TOP VIEW)
2
1
1
3
4
13
T:
2
B NTAC DC
-1- CO 250V
EB 25A 001
G9VDCPAN 424Y1-0
12E IN JAt No. 0 3
D
MA
(Mounting hole dimensions)
Lo
4
Two, M4
Two, M4
49.2
(Coil M4 screw
dimensions)
12.6
(Coil M4 screw
dimensions)
Two, M4 or 4.8-dia. holes
40
18
1
2
Dimension
(mm)
Tolerance
(mm)
10 or lower
±0.3
10 to 50
±0.5
50 or higher
±1
Mounting Hole Dimensions
(TOP VIEW)
G9EB-1-B
12VDC CONTACT:
25A 250VDC
50±0.1
MADE IN JAPAN
Lot No. 0424Y1-0001
3
4
52
58
18.7
8
25
60
13±0.1
DC Power Relays (25-A Models)
G9EB-1
5
Precautions
!WARNING
Take measures to prevent contact with charged parts when using
the Relay for high voltages.
■ Correct Use
Refer to the relevant catalog for common precautions.
1. Be sure to tighten all screws to the appropriate torque given
below. Loose screws may result in burning due to abnormal heat
generation during energization.
• M8 screws: 8.82 to 9.80 N·m
• M6 screws: 3.92 to 4.90 N·m
• M5 screws: 1.57 to 2.35 N·m
• M4 screws: 0.98 to 1.37 N·m
• M3.5 screws: 0.75 to 1.18 N·m
2. The G9EA and G9EC 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.
3. 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.
4. 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.
5. 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.
6. If the Relay is used for no-load switching, the contact resistance
may increase and so confirm correct operation under the actual
operating conditions.
7. These Relays contain pressurized gas. Even in applications with
low switching frequencies, the ambient temperature and heat
caused by arc discharge in the contacts may allow permeation of
the sealed gas, resulting in arc interruption failure.
In order to ensure safety of the system, replace Relays on a regular basis.
8. Do not use or store the Relay in a vacuum. Doing so will accelerate deterioration of the sealing.
9. 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 mustoperate 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.
6
DC Power Relays (25-A Models)
G9EB-1
10.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%.
11.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.
12.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.
13.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.
14.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.
15.Be sure to turn OFF the power and confirm that there is no residual voltage before replacing the Relay or performing wiring.
16.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.
17.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.
18.Do not tighten the screws to a torque exceeding 11 N·m for the
M8 screws and 5 N·m for the M5 screws.
Overtightening the contact terminals will reduce the switching performance and damage the product.
19.Be sure to use the screws provided with the product for wiring coil
terminals and contact terminals. The specified tightening torque
cannot be achieved with different screws and may result in abnormal heat generation when energized.
The coil’s power consumption can be reduced by using in combination with a semiconductor circuit. Consult your OMRON representative for details.
Recommended Wire Size
Model
G9EB-1-B
Note: Use flexible leads.
Size
2 to 5.5 mm2
Omron Electronic Components, LLC
Terms and Conditions of Sales
I. GENERAL
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OMRON PRODUCT IS FIT AND SUFFICIENT FOR USE IN A MOTORIZED VEHICLE
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interference.
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medical equipment, amusement machines, vehicles, safety equipment, and
installations subject to separate industry or government regulations.
(d) Systems, machines, and equipment that could present a risk to life or property.
3. Prohibited Use: NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING
SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM
AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE
PRODUCT IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE
WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
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VEHICLE APPLICATION MUST BE EXPRESSLY STATED IN THE SPECIFICATION BY
SELLER.
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a programmable Product.
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and the users must correlate it to actual application requirements.
4. Change In Specifications: Product specifications and descriptions may be changed at
any time based on improvements or other reasons. It is Seller’s practice to change part
numbers when published ratings or features are changed, or when significant
engineering changes are made. However, some specifications of the Product may be
changed without any notice.
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5. Severability: If any provision hereof is rendered ineffective or invalid, such provision shall
not invalidate any other provision.
DC Power Relays (25-A Models)
G9EB-1
7
Certain Precautions on Specifications and Use
1. Suitability for Use. Seller shall not be responsible for conformity with any standards, codes or regulations which apply to the combination of the Product in
Buyer's application or use of the Product. At Buyer's request, Seller will provide applicable third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself is not
sufficient for a complete determination of the suitability of the Product in combination with the end product, machine, system, or other application or use.
Buyer shall be solely responsible for determining appropriateness of the particular Product with respect to Buyer's application, product or system. Buyer
shall take application responsibility in all cases but the following is a nonexhaustive list of applications for which particular attention must be given:
(i) Outdoor use, uses involving potential chemical contamination or electrical
interference, or conditions or uses not described in this document.
(ii) Energy control systems, combustion systems, railroad systems, aviation
systems, medical equipment, amusement machines, vehicles, safety
equipment, and installations subject to separate industry or government
regulations.
(iii) Use in consumer products or any use in significant quantities.
(iv) Systems, machines and equipment that could present a risk to life or
property. Please know and observe all prohibitions of use applicable to this
product.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS
RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM
AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT
THE OMRON PRODUCT IS PROPERLY RATED AND INSTALLED FOR THE
INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
2. Programmable Products. Seller shall not be responsible for the user's programming of a programmable product, or any consequence thereof.
3. Performance Data. Performance data given in this publication is provided as
a guide for the user in determining suitability and does not constitute a warranty. It may represent the result of Seller's test conditions, and the users must
correlate it to actual application requirements. Actual performance is subject to
Seller's Warranty and Limitations of Liability.
4. Change in Specifications. Product specifications and accessories may be
changed at any time based on improvements and other reasons. It is our practice to change part numbers when published ratings or features are changed,
or when significant construction changes are made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers may be assigned to fix or establish key specifications for
your application. Please consult with your Seller representative at any time to
confirm actual specifications of purchased Product.
5. Errors and Omissions. The information in this publication has been carefully
checked and is believed to be accurate; however, no responsibility is assumed
for clerical, typographical or proofreading errors, or omissions.
6. RoHS Compliance. Where indicated, our products currently comply, to the
best of our knowledge as of the date of this publication, with the requirements
of the European Union's Directive on the Restriction of certain Hazardous
Substances ("RoHS"), although the requirements of RoHS do not take effect
until July 2006. These requirements may be subject to change. Please consult
our website for current information.
Complete “Terms and Conditions of Sale” for product purchase and use are on Omron’s website
at http://www.components.omron.com – under the “About Us” tab, in the Legal Matters section.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
OMRON ON-LINE
OMRON ELECTRONIC
COMPONENTS LLC
Global - http://www.omron.com
USA - http://www.components.omron.com
55 E. Commerce Drive, Suite B
Schaumburg, IL 60173
847-882-2288
Cat. No. J144-E-05Aa
8
02/09
Specifications subject to change without notice
DC Power Relays (25-A Models)
G9EB-1
Printed in USA