Industrial Timer Switches & Time Delay Relays

Industrial timer switches control equipment based on time delay. They automatically start, stop, or sequence electrical devices after a preset time. Therefore, machines can operate in the correct order without constant operator supervision.

At UniGulfSupply, we supply reliable timer switches and time-delay relays suitable for control panels, machinery, and building automation systems across Oman & UAE. These devices improve automation accuracy and protect equipment from sudden operation.

Timers receive a signal from push buttons, sensors, or controllers. After the selected delay period, they activate relays or contactors. As a result, motors and electrical loads operate in a controlled sequence.

Types Available

This category typically includes:

• ON-delay timers

• OFF-delay timers

• Cyclic timers

• Star-delta timers

• Digital timers

• Analog timers

• Multi-function timers

• DIN rail mounted timers

They operate together with Industrial Relays and Industrial Contactors

They also work with Industrial Sensors and Industrial Push Buttons

Why Timer Switches Are Important

Many machines must not start instantly. Instead, equipment needs a controlled delay.

Timers help to:

• prevent high inrush current

• allow sequential machine operation

• automate processes

• protect motors

• reduce operator intervention

Additionally, controlled starting improves equipment life and system reliability.

Typical Applications

Timer switches are commonly used in:

• motor starter panels

• star-delta motor starters

• pump control systems

• lighting automation

• conveyor systems

• compressors

• HVAC systems

• generator panels

Because industrial processes depend on correct timing, delay control becomes essential.

How a Timer Works

A simple sequence:

1. Push button or sensor sends signal

2. Timer begins countdown

3. Preset delay expires

4. Relay or contactor activates

5. Equipment starts or stops

This allows automatic control without manual switching.

Choosing the Correct Timer

When selecting a timer, consider:

• delay range (seconds, minutes, hours)

• voltage supply

• mounting type (DIN rail or panel)

• number of contacts

• function type (ON-delay or OFF-delay)

For example, star-delta motor starters require a specific star-delta timer.

FAQs

What is the difference between ON-delay and OFF-delay?
An ON-delay timer activates after a delay. An OFF-delay timer keeps equipment running for a period after the signal stops.

Can a timer start a motor directly?
No. It controls a relay or contactor, which then switches the motor.

Are timers used with PLCs?
Yes. However, timers are often used as standalone control devices when a PLC is not required.

Where are timer switches installed?
They are mounted inside electrical control panels on DIN rails.