Telemecanique RE8TA21BU On-Delay Timing Relay

The Telemecanique RE8TA21BU On-Delay Timing Relay is a DIN-rail mounted device from the Zelio Time RE8 family that delivers a precise power-on delay for industrial automation circuits. It accepts 24 V AC/DC or 110–240 V AC supply at 50/60 Hz and provides an adjustable delay range of 3 to 300 seconds, enabling coordinated startups for contactors, relays, motor starters, and sequenced operations in control panels, motor control centers, packaging lines, conveyors, and process equipment. The unit includes one Changeover auxiliary contact (1 C/O SPDT), uses screw clamp terminals for secure wiring, and is designed as an OEM direct replacement for standard 35 mm DIN rail installations. Common replacements include Schneider Electric RE17RAMU, reflecting its role in compatible industrial automation systems.