Current Monitor Relays

Current Monitor Relays from Macromatic

Current Monitor Relays monitor AC single phase currents for over or under current conditions. A separate 24 or 120VAC input (supply) voltage is required to power these units. Three current ranges are available: 0.1 – 1A; 0.5 – 5A; and 1 – 10A. An external current transformer may be used to extend the range of these products (see Typical Installations below). All versions are available in a compact plug-in case utilizing industry-standard 8 or 11 pin octal sockets. Refer to the table below for more information, then click either the Type or Series to see details about a specific product type. If you have any questions regarding the selection or application of current monitor relays

Click on Type or Series to View Product Specifications
Type	Series	Pick-Up		Drop-Out
		Setting	Time Delay	Setting	Time Delay
Standard (Fixed time delay on both pick-up and drop-out current settings)	CMP	Adjustable (Across Monitored Range)	Fixed at 100ms *	Fixed (-5% Pick-Up)	Fixed at 100ms *
	CMKP			Adjustable (50-95% Pick-up)	Fixed at 100ms *
Overcurrent (Adjustable time delay on pick-up and fixed time delay on drop-out current settings)	COP	Adjustable (Across Monitored Range)	.1 - 10 Seconds Adjustable	Fixed (-5% Pick-Up)	Fixed at 100ms *
	COKP			Adjustable (50-95% Pick-up)	Fixed at 100ms *
Undercurrent (Fixed time delay on pick-up and adjustable time delay on drop-out current settings)	CUP	Fixed (+5% Drop-out)	Fixed at 100ms *	Adjustable (Across Monitored Range	0.1 - 10 Seconds Adjustable

* Fixed time delay set at 100ms to eliminate nuisance tripping due to short current surges or drops.

Industrial Electronics By Ross LLC

Current Monitor Relays

Current Monitor Relays from Macromatic

Typical Installations