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    • Home /
    • Current & Voltage Monitors

    Current & Voltage Monitors

    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?

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    Picture of ATC Diversified Electronics CMD-120-ASE-10 Current Monitor

    ATC Diversified Electronics CMD-120-ASE-10 Current Monitor

    CMD-120-ASE-10
    • Control Voltage: 120V AC
    • Current Trip Points: 2.0 to 10 amps adj. max continuous 25 amps
    • Enclosure: Lexan Dust Cover; 8-Pin plug-in
    $445.59
    Picture of ATC Diversified Electronics CMD-120-ASE-20 Current Monitor

    ATC Diversified Electronics CMD-120-ASE-20 Current Monitor

    CMD-120-ASE-20
    • Control Voltage: 120V AC
    • Current Trip Points: 4.0 to 20 amps adj. max continuous 25 amps
    • Enclosure: Lexan Dust Cover; 8-Pin plug-in
    $387.47
    Picture of ATC Diversified Electronics CMD-120-ASE-5 Current Monitor

    ATC Diversified Electronics CMD-120-ASE-5 Current Monitor

    CMD-120-ASE-5
    • Control Voltage: 120V AC
    • Current Trip Points: 1.0 to 5.0 amps adj. max continuous 13.4 amps
    • Enclosure: Lexan Dust Cover; 8-Pin plug-in
    $445.59
    Picture of ATC Diversified Electronics CMD-24-ASE-.25 Current Monitor

    ATC Diversified Electronics CMD-24-ASE-.25 Current Monitor

    CMD-24-ASE-.25
    • Control Voltage: 24V AC
    • Current Trip Points: 0.05 to 0.25 amp adj. max continuous 3.4 amps
    • Enclosure: Lexan Dust Cover; 8-Pin plug-in
    $387.47
    Picture of ATC Diversified Electronics CMD-24-ASE-1 Current Monitor

    ATC Diversified Electronics CMD-24-ASE-1 Current Monitor

    CMD-24-ASE-1
    • Control Voltage: 24V AC
    • Current Trip Points: 0.2 to 1 amp adj. max continuous 11.9 amps
    • Enclosure: Lexan Dust Cover; 8-Pin plug-in
    $387.47
    Picture of ATC Diversified Electronics CMD-24-ASE-10 Current Monitor

    ATC Diversified Electronics CMD-24-ASE-10 Current Monitor

    CMD-24-ASE-10
    • Control Voltage: 24V AC
    • Current Trip Points: 2.0 to 10 amps adj. max continuous 25 amps
    • Enclosure: Lexan Dust Cover; 8-Pin plug-in
    $387.47
    Picture of ATC Diversified Electronics CMD-24-ASE-20 Current Monitor

    ATC Diversified Electronics CMD-24-ASE-20 Current Monitor

    CMD-24-ASE-20
    • Control Voltage: 24V AC
    • Current Trip Points: 4.0 to 20 amps adj. max continuous 25 amps
    • Enclosure: Lexan Dust Cover; 8-Pin plug-in
    $387.47
    Picture of ATC Diversified Electronics CMD-24-ASE-5 Current Monitor

    ATC Diversified Electronics CMD-24-ASE-5 Current Monitor

    CMD-24-ASE-5
    • Control Voltage: 24V AC
    • Current Trip Points: 1.0 to 5.0 amps adj. max continuous 13.4 amps
    • Enclosure: Lexan Dust Cover; 8-Pin plug-in
    $387.47
    Picture of ATC Diversified Electronics CMG-0100-20 Protection Relay

    ATC Diversified Electronics CMG-0100-20 Protection Relay

    CMG-0100-20
    • No physical connection to the AC line that is being monitored
    • Magnetically coupled by passing supply line through protruding
      Current Transformer
    • Withstands 400 Ampere-Turns Continuous
    • No supply voltage required
    • Will operate on 24
      120
      240 or 480 VAC lines
    • 1/4" Quick Disconnect Terminals
    $139.99
    Picture of ATC Diversified Electronics CMG-0101 Current Monitor

    ATC Diversified Electronics CMG-0101 Current Monitor

    CMG-0101

    Self-Powered Go/No-Go Current Monitor

    $134.58
    Picture of ATC Diversified Electronics CMO-120-ASA-.25 Current Monitor

    ATC Diversified Electronics CMO-120-ASA-.25 Current Monitor

    CMO-120-ASA-.25
    • Enclosure Style: Plug-In
    • Current Trip Points: 0.05-0.25 amp adj.
    $435.90
    Picture of ATC Diversified Electronics CMO-120-ASA-1 Current Monitor

    ATC Diversified Electronics CMO-120-ASA-1 Current Monitor

    CMO-120-ASA-1
    • Enclosure Style: Plug-In
    • Current Trip Points: 0.2-1 amp adj.
    $435.90
    Picture of ATC Diversified Electronics CMO-120-ASA-10 Current Monitor

    ATC Diversified Electronics CMO-120-ASA-10 Current Monitor

    CMO-120-ASA-10
    • Enclosure Style: Plug-In
    • Current Trip Points: 2.0-10 amp adj.
    $435.90
    Picture of ATC Diversified Electronics CMO-120-ASA-5 Current Monitor

    ATC Diversified Electronics CMO-120-ASA-5 Current Monitor

    CMO-120-ASA-5
    • Enclosure Style: Plug-In
    • Current Trip Points: 1.0-5.0 amp adj.
    $435.90
    Picture of ATC Diversified Electronics CMO-120-ASE-.25 Current Monitor

    ATC Diversified Electronics CMO-120-ASE-.25 Current Monitor

    CMO-120-ASE-.25
    • Enclosure Style: Surface Mount
    • Current Trip Points: 0.05-0.25 amp adj.
    $348.71
    Picture of ATC Diversified Electronics CMO-120-ASE-1 Current Monitor

    ATC Diversified Electronics CMO-120-ASE-1 Current Monitor

    CMO-120-ASE-1
    • Enclosure Style: Surface Mount
    • Current Trip Points: 0.2-1.0 amp adj.
    $348.71
    Picture of ATC Diversified Electronics CMO-120-ASE-10 Current Monitor

    ATC Diversified Electronics CMO-120-ASE-10 Current Monitor

    CMO-120-ASE-10
    • Enclosure Style: Surface Mount
    • Current Trip Points: 2.0-10 amp adj.
    $435.90
    Picture of ATC Diversified Electronics CMO-120-ASE-20 Current Monitor

    ATC Diversified Electronics CMO-120-ASE-20 Current Monitor

    CMO-120-ASE-20
    • Enclosure Style: Surface Mount
    • Current Trip Points: 4.0-20 amp adj.
    $435.90
    Picture of ATC Diversified Electronics CMO-120-ASE-5 Current Monitor

    ATC Diversified Electronics CMO-120-ASE-5 Current Monitor

    CMO-120-ASE-5
    • Enclosure Style: Surface Mount
    • Current Trip Points: 1.0-5.0 amp adj.
    $435.90
    Picture of ATC Diversified Electronics CMO-24-ASA-10 Current Monitor

    ATC Diversified Electronics CMO-24-ASA-10 Current Monitor

    CMO-24-ASA-10
    • Enclosure Style: Plug-In
    • Current Trip Points: 2.0-10 amp adj.
    $348.71
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