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Time Relays

4 Product Groups

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Multi-function Timers

Multi-function timer - T17MF-U

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On-delay Timers

On-delay timers, T17DT-2, T17DT-U

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Cyclic Timers

T17CY-2, T17CY-U

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Star-delta Timers
  1. ON delay
  2. Repeat cycle, equal, ON first
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Analog Timer Series

The Radix Analog Timer Series provides reliable Time Delay Relays for industrial automation, motor control and process control applications. Designed for accurate and repeatable timing, these timers simplify machine sequencing, motor starting and repetitive switching operations across a wide range of industrial control systems.

The range includes On Delay Timers, Star Delta Timers, Asymmetrical Cyclic Timers and Multi Function Timers, offering dependable timing solutions for OEMs, panel builders, machine manufacturers and system integrators.

Why Choose Radix Analog Timers?

Key Features

  1. Accurate and repeatable timing
  2. Compact 17.5 mm DIN Rail enclosure
  3. Available with 230 VAC and Universal Supply (20–240 VAC / 12–240 VDC) models
  4. Adjustable timing ranges up to 3 Hours
  5. Tool-free rotary setting knobs
  6. Bright Power ON & Relay ON LED indication
  7. Plug-and-play installation
  8. Maintenance-free operation
  9. Rugged industrial construction
  10. UL fire-resistant engineering plastic enclosure
  11. Ideal for continuous industrial operation

Available Product Series

T17DT – On Delay Timers

Reliable On Delay Timers for delayed switching and sequential equipment operation.

  1. Available in 230 VAC and Universal Supply models
  2. Adjustable timing range from 0.1 second to 3 hours
  3. Simple rotary knob adjustment
  4. Suitable for motor starters, control panels and automation systems

T17SD – Star Delta Timers

Industrial Star Delta Timers for automatic starting of three-phase induction motors.

  1. Available in 230 VAC and 415 VAC models
  2. Adjustable run-up time: 3–30 s or 6–60 s
  3. Selectable pause time: 50 ms / 100 ms
  4. Two relay outputs (2 C/O)
  5. Suitable for Star-Delta motor starters, compressors and pumps

T17CY – Asymmetrical Cyclic Timers

Timers designed for repetitive ON/OFF switching with independent timing control.

  1. Available in 230 VAC and Universal Supply models
  2. Independent ON and OFF timing
  3. Cyclic ON First and OFF First operation
  4. Adjustable timing range from 0.1 second to 1 hours
  5. Ideal for lubrication systems, dosing equipment and signalling applications

T17MF – Multi Function Timers

Versatile industrial timer supporting multiple timing functions within a single device.

  1. Universal Supply (20–240 VAC / 12–240 VDC)
  2. Adjustable timing range from 0.1 second to 3 hours
  3. Supports 13 timing functions
  4. Scale factor adjustment (1–10)
  5. Suitable for OEM machinery, process automation and control panels

Available Timing Functions

Depending on the selected model, Radix Timers support:

  1. On Delay
  2. Interval Timing
  3. Delay on Break
  4. Delay on Make / Break
  5. Pulse Output
  6. Single Shot
  7. Retriggerable Single Shot
  8. Latching Relay
  9. Equal Cyclic Timing (ON First / OFF First)
  10. Interval with Totalise
  11. Delay on Break with Totalise

Which Timer Should You Choose?

Choose an On Delay Timer when you need:

  1. Delayed motor starting
  2. Sequential equipment operation
  3. Load sequencing
  4. Lighting control
  5. General automation

Choose a Star Delta Timer when you need:

  1. Automatic Star-Delta motor starting
  2. Reduced motor starting current
  3. Smooth changeover from Star to Delta
  4. Pump and compressor control

Choose a Cyclic Timer when you need:

  1. Repetitive ON/OFF operation
  2. Independent ON and OFF timing
  3. Lubrication systems
  4. Dosing pumps
  5. Ventilation and signalling systems

Choose a Multi Function Timer when you need:

  1. Multiple timing functions in one timer
  2. Reduced inventory
  3. Flexible OEM panel design
  4. Machine automation with different timing requirements

Typical Applications

Radix Analog Timers are suitable for:

  1. Industrial Automation
  2. Motor Control Centres (MCC)
  3. Pump Control Panels
  4. Star-Delta Starters
  5. Compressors
  6. Conveyors
  7. Packaging Machines
  8. HVAC Systems
  9. Water Treatment Plants
  10. Process Industries
  11. OEM Equipment
  12. Machine Control Panels
  13. Electrical Control Panels

Why Choose Radix Analog Timers?

Compared with conventional timing relays, the Radix T17 Series offers:

  1. Wide timing range
  2. Accurate and repeatable operation
  3. Universal supply models
  4. Compact DIN Rail mounting
  5. Tool-free setting adjustment
  6. Bright LED status indication
  7. Maintenance-free operation
  8. Reliable industrial performance

Safety & Construction

The T17 Series is designed for dependable operation in demanding industrial environments.

Construction Features

  1. 17.5 mm DIN Rail enclosure
  2. Screw-type terminals
  3. Tool-free rotary adjustment knobs
  4. Power ON & Relay ON LED indication
  5. Compact and rugged industrial design

Time Relays by Radix

Frequently Asked Questions

An Analog Timer Relay controls the operation of electrical equipment after a preset time delay. It is commonly used for motor control, automation, sequencing and process timing applications.

An On Delay Timer energises the output relay after a preset delay.

A Star Delta Timer automatically changes a motor connection from Star to Delta after the selected run-up time, reducing starting current.

A Cyclic Timer repeatedly switches the output ON and OFF using preset timing intervals. It is widely used for lubrication systems, dosing pumps, signalling and repetitive automation processes.

A Multi Function Timer combines multiple timing modes in one device, allowing a single timer to perform different timing applications without changing hardware.

Depending on the model, Radix Timers are available with:

  1. 230 VAC
  2. 415 VAC (Star Delta models)
  3. Universal Supply: 20–240 VAC / 12–240 VDC

They are widely used in industrial automation, motor control panels, OEM machinery, packaging machines, water treatment plants, HVAC systems, pump control panels and process industries.

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