Macromatic offers a wide variety of AC & DC current sensing relays (sometimes referred to as current monitor relays). They be used in several applications where protection of sensitive or expensive equipment against over or under current conditions is required, such as detecting (sensing) conveyor jam-up conditions, machine tool wear, no load conditions or monitoring status of heater or lamp loads. An external current transformer may be used to extend the range of these products .
Choose the type of mounting configuration required for your application and then select from a variety of functions, time delay settings, and output configurations:
PLUG-IN
Used with 8 or 11 pin octal sockets. Allows for easy replacement without having to remove any control wiring. Macromatic sockets can either be mounted on 35mm DIN track or to the panel with two screws. All Macromatic plug-in time delay relays are UL Listed for use in both United States and Canada (cULus) when used with the appropriate Macromatic socket as well as Component Recognized (cURus) using any recognized socket.
ENCAPSULATED
These products have an encapsulated construction for protection against harsh environments. They are easy to mount with two screws and use 0.25" quick-connect terminations for easy wiring. All Macromatic encapsulated current sensing relays are UL Component Recognized.
The CxH Series is an AC current sensing relay that is available in three versions: CAH Series--can detect either an overcurrent or undercurrent fault (selectable); COH Series--overcurrent only; and CUH Series--undercurrent only. The current- carrying wire is run through the built-in current transformer and can be looped multiple times for greater sensitivity. These relays include user-adjustable settings for Fault Trip Current & Time Delay on Fault Trip as well as an LED to indicate...
The COKP Series is used to detect an overcurrent condition. The pick-up current setting is user-adjustable within one of three ranges as shown in the Product Selec- tion Table below. An external current transformer can be used to extend the range of these products. The drop-out setting is adjustable from 50-95% of the selected pick-up setting. The relay will energize when the monitored AC current is above the pick-up setting for a period longer than the adjustable time delay (t) of 0.1-10...
The CAP Series current sensing relay is used to detect an AC or DC overcurrent condition. It has two operating modes: non-latching or latching. Each relay has three top-mounted potentiometers: one for selecting the pick-up setting within the selected monitored current range (“Threshold”), one for selecting the drop-out setting of 5-50% below pick-up setting (“Hysteresis”), and one for setting the start- up sensing delay (ts). This delay, which is adjustable from 0.1 – 10 seconds, inhibits ...
The CM Series is used to detect either an overcurrent or undercurrent condition. The pick-up current setting is user-adjustable within one of three ranges as shown in the Product Selection Table below. An external current transformer can be used to extend the range beyond 10 amperes.
The CO Series is used to detect an overcurrent condition. The pick-up current setting is user-adjustable within one of three ranges as shown in the Product Selection Table below. An external current transformer can be used to extend the range beyond 10 amperes.
The CU Series is used to detect an undercurrent condition. The drop-out current setting is user-adjustable within one of three ranges as shown in the Product Selection Table below. An external current transformer can be used to extend the range beyond 10 amperes.
