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. RoHS Compliant Refer toDC Power Relays Common Precaution. Model Number Legend 1. Number of Poles 3. Coil Terminals G9EB- - - - B: M4 screw terminals 1: 1 pole 12 3 4 G 2. Contact Form 4. Special Functions 9 E Blank: SPST-NO B 1 List of Models Terminals Models Contact form Coil rated voltage Model Coil terminals Contact terminals 12 VDC 24 VDC Switching/current Screw terminals Screw terminals SPST-NO 48 VDC G9EB-1-B conduction models 60 VDC 100 VDC 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 Item Rated current Coil resistance Must-operate voltage Must-release voltage Maximum voltage Power consumption Rated voltage (mA) () (V) (V) (V) (W) 12 VDC 166.7 72 24 VDC 83.3 288 130% of rated 75% max. of rated 10% min. of rated 48 VDC 41.7 1,152 volt-age (at 23C Approx. 2 voltage voltage within 10 minutes) 60 VDC 33.3 1,800 100 VDC 20 5,000 Note 1. The figures for the rated current and coil resistance are for a coil temperature of 23C and have a tolerance of 10%. Note 2. The figures for the operating characteristics are for a coil temperature of 23C. Note 3. The figure for the maximum voltage is the maximum voltage that can be applied to the relay coil. Contacts Resistive load Item 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 1 -G9EB-1 DC Power Relays (25-A Models) Characteristics Item Model G9EB-1(-B) Contact resistance *1 30 m 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. Between coil and contacts 1,000 M min. Insulation resistance *2 Between contacts of the same polarity 1,000 M min. Between coil and contacts 2,500 VAC, 1 min Dielectric strength Between contacts of the same polarity 2,500 VAC, 1 min Impulse withstand voltage *3 4,500 V 10 to 55 to 10 Hz, 0.75-mm single amplitude Destruction 2 (Acceleration: 2.94 to 88.9 m/s ) Vibration resistance 10 to 55 to 10 Hz, 0.75-mm single amplitude Malfunction 2 (Acceleration: 2.94 to 88.9 m/s ) 2 Destruction 490 m/s Shock resistance 2 Malfunction 100 m/s 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 70C (with no icing or condensation) Ambient operating humidity 5% to 85% RH Weight (including accessories) Approx. 135 g Note. The above values are initial values at an ambient temperature of 23C 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. G *3. The impulse withstand voltage was measured with a JEC-212 (1981) standard impulse voltage waveform (1.2 50 s). 9 *4. The mechanical endurance was measured at a switching frequency of 3,600 operations/hr. E *5. The electrical endurance was measured at a switching frequency of 60 operations/hr. B *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. 1 2 -