Finder 83.21.0.240.0000 ON-Delay Timer Relay, 1 CO, 240V AC, 16A, DIN Rail

Industrial electricians and panel builders use the Finder 83.21.0.240.0000 ON-delay timer relay to add time-controlled switching in control cabinets and automation systems. It is a monofunction timer with one changeover contact, designed for 35 mm DIN rail mounting.

Key specifications

• Function: ON-delay (Einschaltwischer)
• Supply voltage: 240 V AC (50/60 Hz)
• Time range: 0.05 s to 100 h
• Contact configuration: 1 changeover (CO)
• Contact material: AgNi (silver nickel)
• Output rating: 16 A / 250 V AC (AC1), 16 A / 24 V DC (DC1)
• Power consumption: 2.5 VA
• Mounting: 35 mm DIN rail
• Terminals: screw terminals
• Operating temperature: -10 to +50 °C
• Protection degree: IP20 terminals, IP40 front panel
• Dielectric strength: 2 kV AC (input/output)
• Electrical life: 100,000 cycles at rated load
• Mechanical life: 10 x 10^6 cycles
• Housing: self-extinguishing plastic

Why choose it

This timer relay offers a wide time setting range and a robust 16 A contact, making it suitable for direct control of loads such as contactors, valves, and small motors. The AgNi contact material ensures reliable switching for resistive and slightly inductive loads.

Ideal use cases

• Delayed start of motors or fans after power-up
• Sequential control in automation systems
• Time-delayed alarm activation
• Lighting control with delayed switch-on

Good to know

The unit is designed for panel mounting and connects via screw terminals. It operates on 240 V AC mains and consumes only 2.5 VA, minimizing heat generation inside the cabinet. The front panel provides IP40 protection, while the terminals are IP20, suitable for installation in a protected environment.