DC Power Relays (60-A, 100-A Models) G9EA-1 1
DC Power Relays (60-A, 100-A Models)
G9EA-1
DC Power Relays Capable of Interrupting High-
voltage, High-current Loads
• A compact relay capable of switching 400-V 60-A/100-A DC loads.
(Capable of interrupting 600 A at 300 VDC max.)
• The switching section and driving section are gas-injected and her-
metically sealed, allowing these compact relays to interrupt high-
capacity loads. The sealed construction also requires no arc
space, saves space, and helps ensure safe applications.
• Downsizing and optimum design allow no restrictions on the
mounting direction.
• Terminal Cover and DIN Track Adapters are also available for in-
dustrial applications.
•UL/CSA standard UL508 approved.
Model Number Structure
■Model Number Legend
1. Number of Poles
1: 1 pole
2. Contact Form
Blank:SPST-NO
3. Coil Terminals
B: M3.5 screw terminals
Blank:Lead wire output
4. Special Functions
CA: High-current conduction (100 A)
Ordering Information
■List of Models
Note: 1. Relays come with two M5 screws for the main terminals (contacts).
2. Relays with coil terminals and screw terminals come with two M3.5 screws.
12 34
G9EA-@-@-@-@
Models Terminals Contact form Rated coil voltage Model
Coil terminals Contact terminals
Switching/current con-
duction models
Screw terminals Screw terminals SPST-NO 12 VDC
24 VDC
48 VDC
60 VDC
100 VDC
G9EA-1-B
Lead wires G9EA-1
High-current conduc-
tion models
Screw terminals G9EA-1-B-CA
Lead wires G9EA-1-CA
2DC Power Relays (60-A, 100-A Models) G9EA-1
Specifications
■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%.
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 for period of 10 minutes at an ambient
temperature of 23°C. It does not apply to continuous operation.
Contacts
■ Characteristics
Note: 1. The above values are initial values at an ambient temperature of 23°C 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.
Rated voltage Rated current Coil resistance Must-operate
voltage
Must-release
voltage
Maximum voltage
(See note 3.)
Power
consumption
12 VDC 417 mA 28.8 Ω75% max. of rated
voltage
8% min. of rated
voltage
130% of rated volt-
age
Approx. 5 W
24 VDC 208 mA 115.2 Ω
48 VDC 102 mA 469.3 Ω
60 VDC 86.2 mA 695.7 ΩApprox. 5.2 W
100 VDC 53.6 mA 1,864 ΩApprox. 5.4 W
Item Resistive load
G9EA-1(-B) G9EA-1(-B)-CA
Rated load 60 A at 400 VDC, 100 A at 120 VDC 30 A at 400 VDC
Rated carry current 60 A 100 A
Maximum switching voltage 400 V 400 V
Maximum switching current 100 A 30 A
Item G9EA-1(-B) G9EA-1(-B)-CA
Contact resistance (See note 2.) 30 mΩ max. (0.6 mΩ typical) 10 mΩ max. (0.3 mΩ typical)
Contact voltage drop 0.1 V max.
(for a carry current of 60 A)
0.1 V max.
(for a carry current of 100 A)
Operate time 50 ms max.
Release time 30 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 196 m/s2
Mechanical endurance (See note 5.) 200,000 ops. min.
Electrical endurance (See note 6.) 120 VDC, 100 A, 3,000 ops. min. 400 VDC, 30 A, 1,000 ops. min.
400 VDC, 60 A, 3,000 ops. min. 120 VDC, 30 A, 2,500 ops. min.
400 VDC, 30 A, 30,000 ops. min. —
Short-time carry current 100 A (10 min) 150 A (10 min)
Maximum interruption current 600 A at 300 VDC (5 times) —
Overload interruption 180 A at 400 VDC (100 times min.) 100 A at 120 VDC (150 times min.)
Reverse polarity interruption –60 A at 200 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. 310 g
DC Power Relays (60-A, 100-A Models) G9EA-1 3
Engineering Data
■G9EA-1(-B) Switching/Current Conduction Models
■G9EA-1(-B)-CA High-current Conduction Models
Carry current (A)
Energizing time (s)
Carry Current vs Energizing
Time
30 5010 100 300 500 1,000
100,000
10,000
1,000
100
10
1
10,000
5,000
3,000
1,000
500
300
10
5
1
3
100
50
30
30 5010 100 300 500 1,00030 5010 100 300 500 1,000
10
5
3
1
0.5
0.3
0.1
0.05
0.03
0.01
Switching voltage (V)
Switching current (A)
Electrical Endurance
(Switching Performance)
Operations
Operations (x 10,000)
Switching 120-VDC resistive
load (positive direction)
Interrupting 400-VDC resistive
load (positive direction)
Switching current (A)
Electrical Endurance
(Interruption Performance)
Switching current (A)
Maximum Switching
Capacity
1,000
500
300
100
50
30
10
5
3
130 5010 100 300 500 1,000
G9EA-1
DC resistive load
Switching
400-VDC
resistive load
(positive direction)
Carry current (A)
Energizing time (s)
Carry Current vs
Energizing Time
30 5010 100 300 500 1,000
10,000
5,000
3,000
1,000
500
300
100
50
30
10
1,000
500
300
100
50
30
10
5
3
130 5010 100 300 500 1,000
G9EA-1-CA
DC resistive load
Switching voltage (V)
Contact current (A)
Electrical Endurance
(Switching Performance)
Operations
Switching 120-VDC resistive
load (positive direction)
Switching current (A)
Maximum Switching
Capacity
30 5010 100 300 500 1,000
100,000
10,000
1,000
100
10
1
4DC Power Relays (60-A, 100-A Models) G9EA-1
■All G9EA-1 Models
Single amplitude (mm)
Frequency (Hz)
Vibration Malfunction
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
110305053 100
20
15
10
5
0 5.0 10.0 15.0 20.0 25.0 30.0
30
25
20
15
10
5
0 20 40 60 80 100
Number of contacts
Number of Relays
Percentage of rated voltage (%) Time (ms)
Must-operate voltage
Must-release voltage
Sample: G9EA-1
Number: 35
Must-operate Voltage and
Must-release Voltage
Distributions
Time Characteristic
Distributions
Sample: G9EA-1
Number: 35
Operate time
Release time
Sample: G9EA-1
Number: 5
Unconfirmed area
Confirmed area
Z'
Z
Y
Y'
X
X'
1,000
1,000
800
600
400
200
200
400
600
800
The value at which malfunction occurred was
measured after applying shock to the test piece
3 times each in 6 directions along 3 axes.
Y'
YX'
X
Z
Z'
G9EA-1-B
12VDC
MADE IN JAPAN
CONTACT:
60A 400VDC
Lot No. 1362K1-0001
2(-) 1(+)
10.0
8.0
6.0
4.0
2.0
0.0
−2.0
−4.0
−6.0
−8.0
−10.0
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.
10.0
8.0
6.0
4.0
2.0
0.0
−2.0
−4.0
−6.0
−8.0
−10.0
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
Rate of change (%)
Sample: G9EA-1
Number: 5
Must-release voltage
Must-operate voltage
Start After test
Vibration Resistance Shock Malfunction Shock Resistance
Rate of change (%)
Sample: G9EA-1
Number: 5
Unit: m/s
2
Energized
Deenergized
Sample: G9EA-1
Number: 5
Must-operate voltage
Must-release voltage
Start After test
DC Power Relays (60-A, 100-A Models) G9EA-1 5
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Models with Screw Terminals
G9EA-1-B(-CA)
Models with Lead Wires
G9EA-1(-CA)
G9EA-1-B
12VDC
MADE IN JAPAN
CONTACT:
60A 400VDC
Lot No. 1362K1-0001
2(-) 1(+)
17.5
2
15.3
36
24
61
73
47
10.5
67.2
15.2
24±0.1
61±0.1
1(+)
2(−)
78
39.7
(Coil terminal
height)
Two, M5
M3.5 screws
60.7
(Terminal height)
Terminal Arrangement/
Internal Connections
Note: Be sure to connect terminals with the
correct polarity. Coils do not have polarity.
Two, M6 or 6.5-dia. holes
(TOP VIEW)
Mounting Hole Dimensions
(TOP VIEW)
G9EA-1-B
12VDC
MADE IN JAPAN
CONTACT:
60A 400VDC
Lot No. 1362K1-0001
2(-) 1(+)
Two, 6.2-dia. holes
Dimension
(mm)
Tolerance
(mm)
10 or lower ±0.3
10 to 50 ±0.5
50 or higher ±1
G9EA-1
12VDC
MADE IN JAPAN
CONTACT:
60A 400VDC
Lot No. 1362K1-0001
2(-) 1(+)
78
17.5
2
15.3
3624
61
73
47
10.5
67.2
15.2 (10) 230±20
24±0.1
61±0.1
1 (+)
2 (−)
78
Two, M5
60.7
(Terminal height)
Terminal Arrangement/
Internal Connections
Note: Be sure to connect terminals with the
correct polarity. Coils do not have polarity.
Two, 6.2-dia. holes
(TOP VIEW)
Mounting Hole Dimensions
(TOP VIEW)
G9EA-1
12VDC
MADE IN JAPAN
CONTACT:
60A 400VDC
Lot No. 1362K1-0001
2(-) 1(+)
Two, M6 or 6.5-dia. holes
Dimension
(mm)
Tolerance
(mm)
10 or lower ±0.3
10 to 50 ±0.5
50 or higher ±1
6DC Power Relays (60-A, 100-A Models) G9EA-1
Options
Terminal Cover
P9EA-C
DIN Track Adapter
P9EA-D
Dimensions of cutouts for wiring.
>PC<
P9EA-C
MADE IN JAPAN
MADE IN JAPAN
>PC<
P9EA-C
MADE IN JAPAN
49
6
21
363117
1717
13.2
Two, M5
50
24
±
0
.
1
12
P9
EA-D
61
±
0
.
1
88
Dimension
(mm)
Tolerance
(mm)
10 or lower ±0.3
10 to 50 ±0.5
50 or higher ±1
DC Power Relays (60-A, 100-A Models) G9EA-1 7
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 dam-
age, 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 regu-
lar basis.
8. Do not use or store the Relay in a vacuum. Doing so will acceler-
ate 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 imme-
diately 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 counter-
measures, such as reducing the load current or restricting the
energizing time or ambient operating temperature.
10.The ripple percentage for DC relays can cause fluctuations in the
must-operate voltage or humming. For this reason, reduce the rip-
ple percentage in full-wave rectified power supply circuits by add-
ing 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 endur-
ance with inductive loads is inferior to that of resistive loads. Con-
firm correct operation under the actual operating conditions.
14.Do not use the Relay in locations where water, solvents, chemi-
cals, or oil may come in contact with the case or terminals. Doing
so may result in deterioration of the case resin or abnormal heat-
ing 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 termi-
nals or wiring disconnections.
15.Be sure to turn OFF the power and confirm that there is no resid-
ual 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 per-
formance 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 abnor-
mal heat generation when energized.
The coil’s power consumption can be reduced by using in combina-
tion with a semiconductor circuit. Consult your OMRON representa-
tive for details.
Recommended Wire Size
Note: Use flexible leads.
Model Size
G9EA-1(-B) 14 to 22 mm2
G9EA-1(-B)-CA 22 to 38 mm2
8DC Power Relays (60-A, 100-A Models) G9EA-1
MEMO
DC Power Relays (60-A, 100-A Models) G9EA-1 9
Omron Electronic Components, LLC
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1. Waiver: No failure or delay by Seller in exercising any right and no course of dealing
between Buyer and Seller shall operate as a waiver of rights by Seller.
2. Assignment: Buyer may not assign its rights hereunder without Seller's written consent.
3. Law: These Terms are governed by Illinois law (without regard to conflict of laws).
Federal and state courts in Cook County, Illinois have exclusive jurisdiction for any
dispute hereunder.
4. Amendment: These Terms constitute the entire agreement between Buyer and Seller
relating to the Products, and no provision may be changed or waived unless in writing
signed by the parties.
5. Severability: If any provision hereof is rendered ineffective or invalid, such provision shall
not invalidate any other provision.
I. GENERAL
II. SALES
III. PRECAUTIONS
IV. WARRANTY AND LIMITATION
V. INFORMATION; ETC.
VI. MISCELLANEOUS
10 DC Power Relays (60-A, 100-A Models) G9EA-1
Certain Precautions on Specifications and Use
1. Suitability for Use. Seller shall not be responsible for conformity with any stan-
dards, 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 pro-
vide applicable third party certification documents identifying ratings and limi-
tations 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 com-
bination with the end product, machine, system, or other application or use.
Buyer shall be solely responsible for determining appropriateness of the par-
ticular Product with respect to Buyer's application, product or system. Buyer
shall take application responsibility in all cases but the following is a non-
exhaustive 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 pro-
gramming 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 war-
ranty. 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 prac-
tice to change part numbers when published ratings or features are changed,
or when significant construction changes are made. However, some specifica-
tions of the Product may be changed without any notice. When in doubt, spe-
cial 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.
OMRON ON-LINE
Global - http://www.omron.com
USA - http://www.components.omron.com
Cat. No. J144-E-05Aa Printed in USA
OMRON ELECTRONIC
COMPONENTS LLC
55 E. Commerce Drive, Suite B
Schaumburg, IL 60173
847-882-2288
02/09 Specifications subject to change without notice
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.