DC Power Relays (200-A Models)
G9EC-1
DC Power Relays Capable of Interrupting High-
voltage, High-current Loads
A compact relay capable of switching 400-V 200-A DC loads. (Ca-
pable of interrupting 1,000 A at 400 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 is also available for industrial applications.
UL/CSA standard UL508 approved.
Model Number Structure
Model Number Legend
G9EC-@-@-@-@
12 3 4
1. Number of Poles
1: 1 pole
2. Contact Form
Blank:SPST-NO
3. Coil Terminals
B: M3.5 screw terminals (standard)
Blank: Lead wire output
4. Special Functions
Ordering Information
List of Models
Models Terminals Contact form Coil rated voltage Model
Coil terminals Contact terminals
Switching/current con- Screw terminals Screw terminals SPST-NO 12 VDC G9EC-1-B
duction models 24 VDC
Lead wire G9EC-1
48 VDC
60 VDC
100 VDC
Note: 1. Relays come with two M8 nuts for the main terminals (contacts).
2. Relays with coil terminals and screw terminals come with two M3.5 screws.
DC Power Relays (200-A Models) G9EC-1 1Specifications
Ratings
Coil
Rated voltage Rated current Coil resistance Must-operate Must-release Maximum voltage Power
voltage voltage (See note 3.) consumption
12 VDC 938 mA 12.8 75% max. of rated 8% min. of rated 110% of rated volt- Approx. 11 W
voltage voltage age
24 VDC 469 mA 51.2
48 VDC 234 mA 204.8
60 VDC 188 mA 320.0
100 VDC 113 mA 888.9
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 23C.
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
Item Resistive load
G9EC-1(-B)
Rated load 200 A at 400 VDC
Rated carry current 200 A
Maximum switching voltage 400 V
Maximum switching current 200 A
Characteristics
Item G9EC-1(-B)
Contact resistance (See note 2.) 30 m max. (0.2 m typical)
Contact voltage drop 0.1 V max. (for a carry current of 200 A)
Operate time 50 ms max.
Release time 30 ms max.
Insulation Between coil and contacts 1,000 M min.
resistance
Between contacts of the same polarity 1,000 M min.
(See note 3.)
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
2
Vibration resistance Destruction
10 to 55 to 10 Hz 0.75-mm single amplitude (Acceleration: 2.94 to 88.9 m/s )
2
Malfunction 10 to 55 to 10 Hz 0.75-mm single amplitude (Acceleration: 2.94 to 88.9 m/s )
2
Shock resistance Destruction
490 m/s
2
Malfunction
196 m/s
Mechanical endurance (See note 5.) 200,000 operations min.
Electrical endurance (resistive load) (See note 6.) 400 VDC, 200 A, 3,000 operations min.
Short-time carry current 300 A (15 min)
Maximum interruption current 1,000 A at 400 VDC (10 times)
Overload interruption 700 A at 400 VDC (40 times min.)
Reverse polarity interruption 200 A at 200 VDC (1,000 times min.)
Ambient operating temperature 40 to 50 C (with no icing or condensation)
Ambient operating humidity 5% to 85%
Weight Approx. 560 g
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 s).
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.
2 DC Power Relays (200-A Models) G9EC-1