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'AS0' Low-Current Sensors from NK Technologies are specialized current operated switches which combine an ultra-sensitive current transformer and signal conditioning electronics into a single package for sensing AC current from 3-350mA. Useful for signal or lamp status monitoring, detecting minute fault currents or fan proving, the ASO features solid-state outputs and jumperselectable ranges, which make it a versatile choice for low-current status indicating applications.
NK Technologies AS0 Series AC Ultra Low Current Operated Switches, Low Range 3 - 15 mA and High Range 15 - 30 mA Field Adjustable Setpoint Ranges
| Power Supply | Operates from ±20% of nominal voltages |
| Nominal Voltages | 120 VAC (50–400 Hz) or 24 VAC/DC |
| Power Consumption | 2.5 Watts |
| Output Rating | • AC Version: 1 A @ 240 VAC • DC Version: 0.15 A @ 30 VDC |
| Response Time | • 150 ms @ 5% above setpoint • 100 ms @ 50% above setpoint |
| Setpoint Range | • Low Range: 3–15 mA field-adjustable • High Range: 15–350 mA field-adjustable |
| Max. Input | 10 A |
| Isolation Voltage | UL listed to 1270 VAC |
| Frequency Range | 50–400 Hz (Monitored Circuit) |
| Case | UL94 V0 Flammability Rated |
| Environmental | -4 to 122°F (-20 to 50°C) 0–95% RH, non-condensing |
| Listings | UL listed (USA and Canada), most models |
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