Instrument Meter Specialties

2108 B West Magnolia Blvd
Burbank, CA 91506
Phone: 800-926-3837 FAX: 818-841-2379
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Single RangeAS1 Series

  • ‘AS1’ Series Current Operated Switches from NK Technologies combine a current transformer, signal conditioner and limit alarm into a single package for use in status monitoring or proof of operation applications. Offering an extended setpoint range of 1-150A and universal, solid-state outputs, the self-powered AS1 can be tailored to provide accurate and dependable digital indication of over-current conditions across a broad range of applications. Available in solid-core enclosure styles or in a split-core case to maximize ease of installation.

Multi-RangeAS3 Series

  • ‘AS3’ Series Current Operated Switches From NK Technologies provide the same dependable indication of status offered by the AS1, but with the added benefit of increased setpoint accuracy. A choice of three, jumper-selectable input ranges allows the AS3 to be tailored to an application, providing more precise control through improved setpoint resolution. Self-powering, isolated solid-state outputs, 1-6A, 6- 40A and 40-200A input ranges and a choice of split- or solid-core enclosures are standard.

Self-CalibratingASM Series

  • ‘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 self-learns 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.

Low CurrentASO Series

  • ‘ASO’ 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 jumper selectable ranges, which make it a versatile choice for low-current status indicating applications.

High-PerformanceASX Series

  • The 'ASX' Series from NK Technologies is a high-performance current-operated switch with field-adjustable time delay to help minimize nuisance trips during start-up and operation. Designed for motor status applications where setpoint accuracy and repeatability are critical, the ASX offers a linear setpoint characteristic and constant hysteresis. Standard features include self-powering, jumper-selectable ranges and a choice of outputs and cases.

Time DelayASXP Series

  • The 'ASXP' from NK Technologies is a powered version of our popular current switch with integral time delay series. A fixed two-second delay upon trip minimizes nuisance alarms during start-up and operation in motor or heater status applications. For use with 24VAC/DC or 120VAC supplies, this high performance product offers OEM-caliber accuracy, precision tolerances, low hysteresis and low (non-sinusoidal) frequency operation. Available with status LED and solid-core enclosure as standard.

DC Current Operated SwitchDS3 Series

  • ‘DS3’ Current Operated Switches from NK Technologies combine a Hall effect sensor, signal conditioner and a limit alarm into a single package. The DS3 Series offers three jumper-selected current input ranges and frequency response from DC to 400Hz. Available in a solid-core with choice of relay or a universal solid state output.