Current & Voltage Monitors

Showing 1–12 of 138 results

Big Bear Instruments offers a wide variety of current monitors and phase/voltage monitors.  The current monitors are used to do just that -monitor current in its necessary application.  Many units can detect over and/or under current too which is important for avoiding an issue with continuous operation of critical industrial machinery. The phase/voltage monitors are designed to protect applications from things like phase loss, under or over voltage, and machine failure.  Sort by manufacturer, series, monitor type, or part number.

Not finding the current or phase/voltage monitor you need for your application?

Get a Quote

  • ATC Diversified Electronics CBA-120-ALE-1 Current Monitor

    ATC Diversified Electronics Logo

    Looking for a different Current or Voltage Monitor?

    CLICK HERE for all other Current or Voltage Monitors.

    ATC Diversified Electronics CBA-120-ALE-1 current monitor is part of the CBA series family.  It is designed to detect under and over current conditions.  When the monitored current is within the normal current band, both internal relays are de-energized (or drop out).  When the current rises above the over current setting for longer than 1.0 second, the over current relay energizes (or pick-up).  The over and under current trip points are independently adjustable and an external CT may be used to extend the range of the current monitor if needed.

    $303.24
  • ATC Diversified Electronics CBA-120-ALE-10 Current Monitor

    ATC Diversified Electronics Logo

    Looking for a different Current or Voltage Monitor?

    CLICK HERE for all other Current or Voltage Monitors.

    ATC Diversified Electronics CBA-120-ALE-10 current monitor is part of the CBA series family.  It is designed to detect under and over current conditions.  When the monitored current is within the normal current band, both internal relays are de-energized (or drop out).  When the current rises above the over current setting for longer than 1.0 second, the over current relay energizes (or pick-up).  The over and under current trip points are independently adjustable and an external CT may be used to extend the range of the current monitor if needed.

    $303.24
  • ATC Diversified Electronics CBA-120-ALE-20 Current Monitor

    ATC Diversified Electronics Logo

    Looking for a different Current or Voltage Monitor?

    CLICK HERE for all other Current or Voltage Monitors.

    ATC Diversified Electronics CBA-120-ALE-20 current monitor is part of the CBA series family.  It is designed to detect under and over current conditions.  When the monitored current is within the normal current band, both internal relays are de-energized (or drop out).  When the current rises above the over current setting for longer than 1.0 second, the over current relay energizes (or pick-up).  The over and under current trip points are independently adjustable and an external CT may be used to extend the range of the current monitor if needed.

    $303.24
  • ATC Diversified Electronics CBA-120-ALE-30 Current Monitor

    ATC Diversified Electronics Logo

    Looking for a different Current or Voltage Monitor?

    CLICK HERE for all other Current or Voltage Monitors.

    ATC Diversified Electronics CBA-120-ALE-30 current monitor is part of the CBA series family.  It is designed to detect under and over current conditions.  When the monitored current is within the normal current band, both internal relays are de-energized (or drop out).  When the current rises above the over current setting for longer than 1.0 second, the over current relay energizes (or pick-up).  The over and under current trip points are independently adjustable and an external CT may be used to extend the range of the current monitor if needed.

    $303.24
  • ATC Diversified Electronics CBA-120-ALE-40 Current Monitor

    ATC Diversified Electronics Logo

    Looking for a different Current or Voltage Monitor?

    CLICK HERE for all other Current or Voltage Monitors.

    ATC Diversified Electronics CBA-120-ALE-40 current monitor is part of the CBA series family.  It is designed to detect under and over current conditions.  When the monitored current is within the normal current band, both internal relays are de-energized (or drop out).  When the current rises above the over current setting for longer than 1.0 second, the over current relay energizes (or pick-up).  The over and under current trip points are independently adjustable and an external CT may be used to extend the range of the current monitor if needed.

    $303.24
  • ATC Diversified Electronics CBA-120-ALE-5 Current Monitor

    ATC Diversified Electronics Logo

    Looking for a different Current or Voltage Monitor?

    CLICK HERE for all other Current or Voltage Monitors.

    ATC Diversified Electronics CBA-120-ALE-5 current monitor is part of the CBA series family.  It is designed to detect under and over current conditions.  When the monitored current is within the normal current band, both internal relays are de-energized (or drop out).  When the current rises above the over current setting for longer than 1.0 second, the over current relay energizes (or pick-up).  The over and under current trip points are independently adjustable and an external CT may be used to extend the range of the current monitor if needed.

    $303.24
  • ATC Diversified Electronics CDD-120-ALE-10 Current Monitor

    ATC Diversified Electronics Logo

    Looking for a different Current or Voltage Monitor?

    CLICK HERE for all other Current or Voltage Monitors.

    ATC Diversified Electronics CDD-120-ALE-10 current monitor is part of the CDD series family.  It is designed to be used as an over current monitor or an under current monitor.  The CDD series has adjustable delay-on operate and adjustable delay-on relay.  When used as an over current monitor the delay-on operate time delay is used to override inrush periods.  When the CDD series is used as an under current monitor, the delay on release timer is used to override a temporary under current condition.

    $315.66
  • ATC Diversified Electronics CDD-120-ALE-20 Current Monitor

    ATC Diversified Electronics Logo

    Looking for a different Current or Voltage Monitor?

    CLICK HERE for all other Current or Voltage Monitors.

    ATC Diversified Electronics CDD-120-ALE-20 current monitor is part of the CDD series family.  It is designed to be used as an over current monitor or an under current monitor.  The CDD series has adjustable delay-on operate and adjustable delay-on relay.  When used as an over current monitor the delay-on operate time delay is used to override inrush periods.  When the CDD series is used as an under current monitor, the delay on release timer is used to override a temporary under current condition.

    $315.66
  • ATC Diversified Electronics CDD-120-ALE-5 Current Monitor

    ATC Diversified Electronics Logo

    Looking for a different Current or Voltage Monitor?

    CLICK HERE for all other Current or Voltage Monitors.

    ATC Diversified Electronics CDD-120-ALE-5 current monitor is part of the CDD series family.  It is designed to be used as an over current monitor or an under current monitor.  The CDD series has adjustable delay-on operate and adjustable delay-on relay.  When used as an over current monitor the delay-on operate time delay is used to override inrush periods.  When the CDD series is used as an under current monitor, the delay on release timer is used to override a temporary under current condition.

    $315.66
  • ATC Diversified Electronics CDO-120-ALE-1 Current Monitor

    ATC Diversified Electronics Logo

    Looking for a different Current or Voltage Monitor?

    CLICK HERE for all other Current or Voltage Monitors.

    ATC Diversified Electronics CDO-120-ALE-1 current monitor is part of the CDO series family.  It is designed to detect over current conditions.  The internal relay energizes when the monitored current exceeds the preset trip point for longer than the adjustable time delay.  The delay is incorporated to prevent tripping caused by inrush currents.  The CDO series has an automatic reset feature and comes in various amp ranges.

    $282.94
  • ATC Diversified Electronics CDO-120-ALE-10 Current Monitor

    ATC Diversified Electronics Logo

    Looking for a different Current or Voltage Monitor?

    CLICK HERE for all other Current or Voltage Monitors.

    ATC Diversified Electronics CDO-120-ALE-10 current monitor is part of the CDO series family.  It is designed to detect over current conditions.  The internal relay energizes when the monitored current exceeds the preset trip point for longer than the adjustable time delay.  The delay is incorporated to prevent tripping caused by inrush currents.  The CDO series has an automatic reset feature and comes in various amp ranges.

    $282.94
  • ATC Diversified Electronics CDO-120-ALE-20 Current Monitor

    ATC Diversified Electronics Logo

    Looking for a different Current or Voltage Monitor?

    CLICK HERE for all other Current or Voltage Monitors.

    ATC Diversified Electronics CDO-120-ALE-20 current monitor is part of the CDO series family.  It is designed to detect over current conditions.  The internal relay energizes when the monitored current exceeds the preset trip point for longer than the adjustable time delay.  The delay is incorporated to prevent tripping caused by inrush currents.  The CDO series has an automatic reset feature and comes in various amp ranges.

    $282.94