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<ul><li>SZC03 series AC current sensing switch is designed and manufactured to solve the AC current monitoring. It uses the principle of mutual inductance to sense the AC straight-through current, isolate the AC current, and output a normally open or normally closed switching signal to directly control various automation industrial equipment, such as flash, buzzer, relay, single-chip or other power load equipment. Compared with traditional mutual inductors, thermal protectors and other devices, using this device can not only get more accurate and more timely control, but can also greatly simplify the design and reduce costs. 
Features: 
1. Self-powered, no external power supply required. 
2. Action current 0.5-200A AC, adjustable with a potentiometer. 
3. LED indicator can conveniently and intuitively indicate the working status of the switch. 
4. High-power MOS tube contactless electronic switch. 
5. The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level. 
7. Hysteresis is less than 1% and can be used under strong magnetic conditions. 
8. The outer casing is made of self-extinguishing material ABS. 
9. Widely used in automation industry that requires current monitoring such as substations, variable frequency speed control devices, inverter devices, electrolytic electroplating, street lamp monitoring, etc. 
Specification: 
Model: SZC03-NC-AL-CH 
Power supply: Not required 
Rated load: 0.3A@135V AC/DC 
Input straight-through current: 0.5-200A AC 
Switch on minimum: 0.5 
± 
0.2A 
Maximum overload of straight-through current: 
200% 
Accuracy: 10% 
Power consumption: 
≤ 
1W 
Leakage current: 
≤ 
1mA 
Hysteresis: 
≤ 
1% 
Response time: 
≤ 
200ms 
Working environment: -30~70 
℃ 
, 0-95%RH 
Dimensions: 62*90*25.5mm / 2.4*3.5*1.0in 
Hole diameter: 20mm / 0.8in 
Package weight: Approx. 84g/2.96oz 
Package 
l 
ist: 
1 * Current Sensing Switch 
Note 
: 
1. Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item. 
2. Please allow slight error due to manual measurement. Thanks for your understanding.</li></ul>

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Normally Closed Current Sensing Switch, Adjustable, AC 0.5-200A, SZC03-NC-AL-CH

SZC03 series AC current sensing switch is designed and manufactured to solve the AC current monitoring. It uses the principle of mutual inductance to sense the AC straight-through current, isolate the AC current, and output a normally open or normally closed switching signal to directly control various automation industrial equipment, such as flash, buzzer, relay, single-chip or other power load equipment. Compared with traditional mutual inductors, thermal protectors and other devices, using this device can not only get more accurate and more timely control, but can also greatly simplify the design and reduce costs. 
Features: 
1. Self-powered, no external power supply required. 
2. Action current 0.5-200A AC, adjustable with a potentiometer. 
3. LED indicator can conveniently and intuitively indicate the working status of the switch. 
4. High-power MOS tube contactless electronic switch. 
5. The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level. 
7. Hysteresis is less than 1% and can be used under strong magnetic conditions. 
8. The outer casing is made of self-extinguishing material ABS. 
9. Widely used in automation industry that requires current monitoring such as substations, variable frequency speed control devices, inverter devices, electrolytic electroplating, street lamp monitoring, etc. 
Specification: 
Model: SZC03-NC-AL-CH 
Power supply: Not required 
Rated load: 0.3A@135V AC/DC 
Input straight-through current: 0.5-200A AC 
Switch on minimum: 0.5 
± 
0.2A 
Maximum overload of straight-through current: 
200% 
Accuracy: 10% 
Power consumption: 
≤ 
1W 
Leakage current: 
≤ 
1mA 
Hysteresis: 
≤ 
1% 
Response time: 
≤ 
200ms 
Working environment: -30~70 
℃ 
, 0-95%RH 
Dimensions: 62*90*25.5mm / 2.4*3.5*1.0in 
Hole diameter: 20mm / 0.8in 
Package weight: Approx. 84g/2.96oz 
Package 
l 
ist: 
1 * Current Sensing Switch 
Note 
: 
1. Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item. 
2. Please allow slight error due to manual measurement. Thanks for your understanding.