Telemecanique RE8TA21BU On-Delay Timing Relay

Description:

The Telemecanique RE8TA21BU is an industrial on-delay timing relay designed to provide accurate power-on delay control with an adjustable time range of 3 to 300 seconds using 24 V AC/DC or 110–240 V AC supply. Commonly installed in industrial control panels, motor control centers, packaging machinery, conveyor systems, and process automation equipment where reliable timed switching is required. Maintenance teams, OEMs, and system integrators use this timing relay for equipment replacement, preventive maintenance, retrofit projects, and maintaining dependable machine sequencing.

Applications:

The Telemecanique RE8TA21BU provides precise on-delay timing for contactors, relays, motor starters, and industrial automation circuits, helping coordinate equipment startup and sequential machine operations. It is widely used in manufacturing facilities, OEM machinery, material handling systems, HVAC controls, and industrial automation applications where dependable timing control improves system reliability and minimizes downtime.

Technical Specifications:

• Manufacturer Part Number (MPN): RE8TA21BU
• Manufacturer: Telemecanique (Schneider Electric)
• Product Type: Timing Relay
• Series: Zelio Time RE8
• Rated Voltage: 24 V AC/DC, 110–240 V AC, 50/60 Hz
• Function: On-Delay (Type A)
• Auxiliary Contacts: 1 Changeover (1 C/O, SPDT)
• Mounting Style: 35 mm DIN Rail Mount
• Terminal Type: Screw Clamp Terminals
• Compatible Systems: Industrial Automation and Control Systems
• Replacement Type: OEM Direct Replacement

Common Replacements

• Schneider Electric RE17RAMU
• Telemecanique RE8TA21BU
• OEM Equivalent RE8TA21BU