The ABB CT-MFD.21 is a versatile multifunction electronic time relay designed for a wide range of applications. It offers 7 distinct timing functions and 7 adjustable time ranges, spanning from 0.05 seconds to 100 hours, providing flexibility and precision for various timing needs. This reliable time relay operates efficiently with a broad control supply voltage range of 12 to 240 V AC/DC, making it suitable for diverse electrical environments. It features a 2 c/o (SPDT) output with contacts rated at 250 V and 4 A, ensuring robust performance and durability. The control input is designed for voltage-related (non-floating) triggering, enhancing its adaptability in different setups. Ideal for automation and control systems, the CT-MFD.21 is a dependable choice for managing time-sensitive operations.