Run-Back Timers

Run-Back Timers are energy-saving time delay relays designed to automatically switch off equipment after a preset run period. The countdown starts when the trigger signal or manual input is applied, ensuring that machinery, fans, or lighting cannot remain on indefinitely. These timers are ideal for industrial, commercial, and HVAC systems requiring timed operation for safety, efficiency, and compliance.

🔧 Technical Highlights:

• Function: Countdown timer that de-energises the output after the preset time unless manually retriggered.
• Supply Range: Wide 12–240 V AC/DC universal voltage input.
• Time Ranges: Configurable from seconds to hours or days via front dials or keypad.
• Trigger Options: Manual pushbutton or control input retrigger for continuous use.
• Outputs: SPCO or DPCO relay contacts; optional solid-state outputs for silent operation.
• Indication: LED status indicators for power, timing, and output relay state.
• Mounting: DIN rail or panel mount, compact enclosure for OEM and retrofit use.
• Certifications: CE and RoHS compliant; many models UL/CSA listed.

✅ Benefits:

• Reduces unnecessary energy use by ensuring timed switch-off.
• Improves safety by preventing unattended equipment operation.
• Easy adjustment and retrigger for flexible timing cycles.
• Universal supply simplifies installation across panel types.
• Durable, industrial-grade design suitable for continuous operation.

🚀 Applications:

• Fan or extractor overrun timing after process completion.
• Lighting and heating controls with auto-off function.
• Machinery or conveyor systems requiring controlled run time.
• HVAC zone control and timed ventilation systems.
• Test benches and load banks with automatic power-down.

Run-back timers enhance efficiency and safety by providing reliable, adjustable countdown timing for industrial and building control systems.

Related Timing Categories

• On-Delay Timers
• Off-Delay Timers
• Multi-Function Timers
• Star–Delta Timers

FAQs

• Q: What is a run-back timer used for?
  A: It automatically switches equipment off after a set time, ensuring controlled run duration and preventing energy waste or overheating.
• Q: Can the timer be retriggered during countdown?
  A: Yes, most models allow retriggering to restart the countdown period, ensuring flexible operation for repeated use.