Omron 08 Cat 1-302 5/10/07 15:39 Page 156 TPCB Power Relay G8Pext TPCB Power Relay G4Aext Flange Mounting Types Miniature Single-pole Relay with 80-A Surge Current and 20-A Terminal Arrangement/Internal Mounting Holes (Bottom View) G8P-1C2T-F/1A2T-F Connections (Bottom View) Switching Current 250 Quick connect ROHS compliant. Ideal for motor switching. Miniature, relay with high switching power and long endurance. Creepage distance conforms to UL, CSA and EN standards. 187 Quick connect Note: Pin 4 is omitted on G8P-1A2T-F Highly noise-resistive insulation materials employed. Standard model available with flux protection construction. Ordering Information Classification Contact Form Model 250 tab terminals/PCB coil terminals SPST-NO G4A-1A-E PCB terminals/PCB coil terminals G4A-1A-PE Note: Allow air circulation within the sealed type G8P by removing the knock off nib from the cover after soldering and cleaning is complete. Note: When ordering, add the rated coil voltage to the model number. Example: G4A-1A-E 12 VDC Rated coil voltage Precautions Model Number Legend Sealed Relays Remove the vent hole tape seal from the cover after all soldering and cleaning have been completed to allow air circulation within sealed G8P Relays. 1. Number of Poles 4. Special Function 1: 1 pole E: For long endurance 2. Contact Form 5. Rated Coil Voltage A: SPST-NO 5, 12, 24 VDC 3. Terminals None: 250 tab/PCB coil terminals P: Straight PCB/PCB terminals CAT. No. K108-E2-03A-X 156 157 Power RelaysOmron 08 Cat 1-302 5/10/07 15:39 Page 158 PCB Power Relay G4AText TPCB Power Relay G4Aext Characteristics Specifications Contact resistance 100 m max. Coil Rating Operate time 20 ms max. Rated voltage 5 VDC 12 VDC 24 VDC Release time 10 ms max. Rated current 180 mA 75 mA 37.5 mA Max. Operating Frequency Mechanical: 18,000 operations/hr Coil resistance 27.8 160 640 Insulation resistance 1,000 M max. (at 500 VDC) Coil inductance Armature OFF 0.8 H 3.5 H Dielectric strength 4,500 VAC 50/60 Hz for 1 min between coil and contacts 1,000 VAC 50/60 Hz for 1 min between contacts of same polarity (ref. value) Armature ON 1.1 H 4.8 H Impulse withstand voltage 8,500V (1.2/50s) between coil and contacts Must operate voltage 70% of rated voltage max. Insulation Creepage (Typ) 6.4 mm Must release voltage 10% of rated voltage min. Distance Clearance (Typ) 3.2 mm Max. permissible voltage 160% of rated voltage at (23) Tracking Resistance (CTI) 250 V Power consumption Approx. 0.9 W 2 Shock resistance Destruction: 1,000 m/s Note: 1. The rated current and coil resistance are measured at a coil temperature of 23C with a tolerance of 10%. 2 Malfunction: 200 m/s 2. Operating characteristics are measured at a coil temperature of 23C. Vibration resistance Destruction: 10 to 55 to 10 Hz, 0.75-mm single amplitude (1.5-mm double amplitude) 3. Max. permissible voltage refers to the maximum value in a varying range of operating power voltage, not a continuous voltage. Malfunction: 10 to 55 to 10 Hz, 0.75-mm single amplitude (1.5-mm double amplitude) Endurance Mechanical: 2,000,000 operations min. (at 18,000 operations/hr) Contact Ratings Motor load: 100,000 operations min. (ON/OFF: 1.5 s) Inverter load: 30,000 operations min. (ON: 3 s, OFF: 5 s) Rated load 20 A at 250 VAC Ambient temperature Operating: -20C to 60C (with no icing) Contact material AgSnO 2 Ambient humidity Operating: 5% to 85% Rated carry current 20 A Weight Approx. 23 g Max. switching voltage 250 VAC Note: The data shown above are initial values. Max. switching current 20 A Max. switching power 5,000 VA Failure rate (ref. value) 100 mA at 5 VDC -6 Note: P level: = 0.1 x 10 /operation (with an operating frequency of 120 operations/min). Engineering Data 60 Maximum Switching Power Endurance Endurance 5,000 with Motor Load 3,000 AC resistive load Load conditions Switching frequency Electrical endurance 250 VAC: ON: 1.5 s 200,000 operations Inrush current: 80 A, 0.3 s (cos = 0.7) OFF: 1.5 s 1,000 AC inductive load Break current: 20 A (cos = 0.9) cos = 0.4 700 250-VAC 500 With Overload resistive load 300 Load conditions Switching frequency Electrical endurance 250 VAC: ON: 1.5 s 1,500 operations 250-VAC inductive load Inrush current: 80 A (cos = 0.7) OFF: 99 s 100 cos = 0.4 Break current: 80 A (cos = 0.7) 70 50 With Inverter Load Switching voltage (V) Switching current (A) Load conditions Switching frequency Electrical endurance 100 VAC: ON: 3 s 30,000 operations Inrush current: 200 A (0-P) OFF: 5 s Break current: 20 A 158 159 Switching current (A) 3 Endurance (x10 operations) Power Relays