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NK Technologies ASM Series Load Monitoring Self-Calibrating AC Current Operated Switches, Self-Powered, SmartLED, 1.5 - 150A Setpoint Range for Fixed Core Units, 2.5 - 150A Setpoint Range for Split Core Units
The 'ASM' Series Load Monitoring Switches from NK Technologies are designed for overload, underload or operating window applications. Upon sensing an average operating current, the ASM selflearns and establishes a limit-alarm trip point based on +/- 15% of the average expected current draw. The ASM offers a choice of solid state outputs and is available in solid or split-core enclosure styles.
| Power Supply | None—Self-powered |
| Output | Magnetically isolated solid-state relay |
| Output Rating | • N.O. Version: 0.30 A @ 135 VAC or VDC • N.C. Version: 0.20 A @ 135 VAC or VDC • Not polarity sensitive |
| Off-state Leakage | <10 μA |
| Response Time | 200 ms |
| Setpoint Range | • Solid-core: 1.5–150 A • Split-core: 2.8–150 A |
| Setpoint | • Overload: +25% of Load (-OL) • Underload: -15% of Load (-UL) • Over/Underload: -15 to +25% of load (OU) |
| Hysteresis | 5% of setpoint |
| Overload | 500 A @ 6sec., 1000 A @ 1sec. |
| Isolation Voltage | UL listed to 1270 VAC, tested to 5000 VAC |
| Frequency Range | 6–100 Hz |
| Dimensions | 3.50" x 2.25" x 1.20", Aperture: 0.74"–0.85" |
| Case | UL94 V0 Flammability Rated |
| Environmental | -4 to 122°F (-20 to 50°C) 0–95% RH, non-condensing |
| Listings | UL/cUL, CE |
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Conveyors (-OL option)
Electronic Proof of Flow (-UL option)
Pump Protection (-OU option)
