1 g4a special-purpose pcb relay miniature single-pole relay with 80-a surge current and 20-a switching current ideal for motor switching. miniature, relay with high switching power and long endurance. creepage distance conforms to ul and csa standards. highly noise-resistive insulation materials employed. standard model available with flux protection construction. ordering information model number legend 1. number of poles 1: 1 pole 2. contact form a: spst-no 3. terminals none: #250 tab/pcb coil terminals p: straight pcb/pcb coil terminals 4. special function e: for long endurance 5. rated coil voltage 5, 12, 24 vdc specifications coil ratings note: 1. the rated current and coil resistance are measured at a coil temperature of 23 c with a tolerance of 10%. 2. operating characteristics are measured at a coil temperature of 23 c. 3. max. permissible voltage refers to the maximum value in a varying range of operating power voltage, not a continuous voltage. r c x vde classification contact form model #250 tab terminals/pcb coil terminals spst-no g4a-1a-e pcb terminals/pcb coil terminals g4a-1a-pe rated coil voltage note: when ordering, add the rated coil voltage to the model number. example: g4a-1a-e 12 vdc g4a- @@ - @@ @ vdc 1 2 3 4 5 rated voltage 5 vdc 12 vdc 24 vdc rated current 180 ma 75 ma 37.5 ma coil resistance 27.8 w 160 w 640 w coil inductance (ref. value) armature off --- 0.8 h 3.5 h armature on --- 1.1 h 4.8 h must operate voltage 70% of rated voltage max. must release voltage 10% of rated voltage min. max. permissible voltage 160% of rated voltage at (23 ? c) power consumption approx. 0.9 w
2 g4a g4a contact ratings note: p level: 60 = 0.1 x 10 -6 /operation (with an operating frequency of 120 operations/min) endurance with motor load with overload with inverter load characteristics note: the data shown above are initial values. rated load 20 a at 250 vac rated carry current 20 a max. switching voltage 250 vac max. switching current 20 a max. switching power 5,000 va failure rate (reference value) 100 ma at 5 vdc load conditions switching frequency electrical endurance 250 vac: inrush current: 80 a, 0.3 s (cos f = 0.7) break current: 20 a (cos f = 0.9) on: 1.5 s off:1.5 s 200,000 operations load conditions switching frequency electrical endurance 250 vac: inrush current: 80 a (cos f = 0.7) break current: 80 a (cos f = 0.7) on: 1.5 s off:99 s 1,500 operations load conditions switching frequency electrical endurance 100 vac; inrush current: 200 a (0 - p) break current: 20 a on: 3 s off:5 s 30,000 operations contact resistance 100 m w max. operate time 20 ms max. release time 10 ms max. max. operating frequency mechanical: 18,000 operations/hr insulation resistance 1,000 m w min. (at 500 vdc) 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 vibration resistance destruction: 10 to 55 to 10 hz, 0.75-mm single amplitude (1.5-mm double amplitude) malfunction: 10 to 55 to 10 hz, 0.75-mm single amplitude (1.5-mm double amplitude) shock resistance destruction: 1,000 m/s 2 malfunction: 200 m/s 2 endurance mechanical: 2,000,000 operations min. (at 18,000 operations/hr) motor load: 100,000 operations min. (on/off: 1.5 s) inverter load: 30,000 operations min. (on: 3 s, off: 5 s) ambient temperature operating: - 20 c to 60 c (with no icing) ambient humidity operating: 5% to 85% weight approx. 25 g
3 g4a g4a engineering data dimensions note: all units are in millimeters unless otherwise indicated; dimensions shown in parentheses are in inches. maximum switching power endurance switching current (a) endurance (x10 operations) 3 switching voltage (v) switching current (a) ac resistive load ac inductive load cos = 0.4 250-vac resistive load 250-vac inductive load cos = 0.4 5,000 3,000 1,000 700 500 300 100 70 50 terminal arrangement /internal connections g4a-1a-e mounting holes (bottom view) 30.5 max. (30.1)* 16 max. (15.7)* 23.5 max. (23.3)* (top view) (bottom view) tab terminal pcb terminal four, 1.8 +0.1 0 dia. four, 1.8 +0.1 0 dia. 16 max. (15.7)* 26.8 max. (26.5)* 30.5 max. (30.1)* g4a-1a-pe terminal arrangement /internal connections (bottom view) mounting holes (bottom view) *average value *average value
4 g4a g4a precautions mounting when mounting two or more relays side by side, provide a minimum space of 3 mm between relays. terminal connection the terminals fit faston receptacle 250 and are suitable for positive-lock mounting. do not apply excessive force on the terminals when mounting or dismounting the relay. the following positive-lock connectors made by amp are recommended. note: the numbers shown in parentheses are for air-feeding. type receptacle terminals positive housing #250 terminals (width: 6.35 mm) amp 170333-1 (170327-1) amp 170334-1 (170328-1) amp 170335-1 (170329-1) amp 172076-1 natural color amp 172076-4 yellow amp 172076-5 green amp 172076-6 blue all dimensions shown are in millimeters. to convert millimeters into inches, multiply by 0.03937. to convert grams into ounces, multiply by 0.03527. cat. no. j056-e1-2a
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