Multifunction Timer Relays (Multi-Function Time Delay Relays)

Multifunction timer relays (also called multi-function time delay relays) are versatile industrial timers designed for flexible sequencing, interlocking and protection tasks in control panels and automation systems. They combine multiple timing functions in a single device to simplify specification, reduce panel stock and speed up commissioning.

🔧 Technical Highlights:

• Timing Modes: Commonly include on-delay, off-delay, interval, one-shot, cyclic or recycler (symmetrical and asymmetrical), pulse on energise, pulse on de-energise, star-delta, watchdog and power-on delay (exact modes depend on model).
• Supply Range: Wide universal inputs typically spanning 12-240 Vac/dc (model dependent) for easy standardisation.
• Time Ranges: From milliseconds to hours or days via front dials or digital keys, with fine and coarse ranges.
• Outputs: SPCO or DPCO relay contacts; solid-state outputs available on selected models for high switching life.
• Mounting: DIN rail 35 mm or panel or surface mounting to suit OEM and maintenance needs.
• Indication: Power, timing and relay status LEDs for quick diagnostics.
• Adjustment and Locking: Potentiometer or keypad setpoints; sealable covers or parameter lock to help prevent tampering.
• Certifications: CE and RoHS; many models meet UL or CSA standards for export panels.

✅ Benefits:

• One device covers multiple timing scenarios, helping reduce SKU count and spares.
• Universal voltage variants simplify global builds and maintenance.
• Clear indication and wide range settings speed up commissioning and fault finding.
• Robust relay contacts support inductive loads in machinery, HVAC and building services.
• Compatible with PLC I or O, contactors and safety interlocks in standard control circuits.

🚀 Applications:

• Machine sequence control, conveyor start and stop logic and jam recovery.
• Pump alternation and anti short cycle control in HVAC and process systems.
• Lighting control, access systems and building automation.
• Star-delta motor starting and changeover timing.
• Brown out recovery, watchdog timing and power-on delays.

This multifunction timer relay category delivers adaptable, panel-ready timing solutions that help engineers standardise on fewer parts while achieving precise, reliable time-delay control across diverse industrial applications.

Related Timing Categories

• On-Delay Timers
• Off-Delay Timers
• Star-Delta Timers
• Brown Out (Mains Restoration) Timers

Multifunction Timer FAQs

• Q: What is a multifunction timer relay?
  A: A multifunction timer relay is a configurable timer that offers several timing modes in one unit, such as on-delay, off-delay, interval and recycling. Engineers select the required mode via a front selector or keypad.
• Q: How do I choose the right multifunction timer model?
  A: Match the required timing function or functions, supply voltage, contact rating (SPCO or DPCO), time range and mounting format. For frequent switching or low-level signals, consider solid-state outputs.
• Q: What is the difference between a multifunction timer and a single-function timer?
  A: A single-function timer provides only one timing mode, such as on-delay or off-delay. A multifunction timer relay combines several modes in one device, reducing the number of different timers you need to stock and making it easier to adjust control sequences without rewiring the whole panel.

Need a single timing mode instead of a multifunction timer? Explore dedicated on-delay, off-delay, timers for simple applications.