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Time Delay Relays

Image Part Number Description / PDF Quantity Rfq
H5F-B

H5F-B

Omron Automation & Safety Services

RELAY TIME DELAY 24HRS 15A 250V

2
TTM4010S-220VAC

TTM4010S-220VAC

IndustrialeMart

MINI TIMER 10S 4PDT 220VAC

10
TS2223

TS2223

Wickmann / Littelfuse

RELAY TIME DELAY 180SEC CHASSIS

5
ATE1-60S-24VDC

ATE1-60S-24VDC

IndustrialeMart

ON-DELAY MAX 60S 24VDC DPDT(2C)

10
8243770000

8243770000

Weidmuller

RELAY TIME DELAY 1SEC 0.1A 48V

0
FS4E-1P4

FS4E-1P4

IndustrialeMart

TIMER MULTI 24VAC 100-240VAC

14
TSD3411S

TSD3411S

Wickmann / Littelfuse

RELAY TIME DELAY ON/OFF RECYCLNG

35
FSU1003

FSU1003

Wickmann / Littelfuse

RELAY TIME DELAY UNIV ADJ FLASHR

0
KRDB115M

KRDB115M

Wickmann / Littelfuse

RELAY TIME DELAY D.O.B.

0
3-1423158-8

3-1423158-8

TE Connectivity Aerospace Defense and Marine

RELAY TIME DELAY 1SEC 10A 240V

0
FS5E-I4

FS5E-I4

IndustrialeMart

TIMER INDICATOR 100-240VAC

2
2866187

2866187

Phoenix Contact

RELAY TIME DELAY 10HRS 3A 250V

1727
TA24A5

TA24A5

Wickmann / Littelfuse

RELAY TIME DELAY 5MIN CHASSIS MT

2130
TSDR415SB18M

TSDR415SB18M

Wickmann / Littelfuse

RELAY TIME DELAY 5SEC 18MIN CHAS

1
KRDS120

KRDS120

Wickmann / Littelfuse

RELAY TIME DELAY SINGLE SHOT

0
C48TD111

C48TD111

Red Lion

RELAY TIME DELAY 999.9HRS PANEL

0
TS1423

TS1423

Wickmann / Littelfuse

RELAY TIME DELAY ON MAKE VERSA

0
E1ZMQ10 24-240VAC/DC

E1ZMQ10 24-240VAC/DC

Aim Dynamics

TIMER RELAY TELE SPDT MULTIF

19
TDR4A33

TDR4A33

Wickmann / Littelfuse

RELAY TIME DELAY 10230S 10A 120V

5
ATS8-23

ATS8-23

IndustrialeMart

TIMER 30H DPDT(2C)/2SPDT 24VACDC

0

Time Delay Relays

1. Overview

Time Delay Relays (TDRs) are control devices that execute switching operations after a predetermined time interval. They integrate timing functions into electrical systems to manage sequence operations, protect equipment, and optimize process efficiency. Modern industrial automation relies on TDRs for precise control in applications ranging from motor startups to complex manufacturing processes.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
On-Delay RelayDelays contact closure after power applicationMotor soft start, conveyor belt synchronization
Off-Delay RelayDelays contact opening after power removalFan cooling systems, oven shutdown sequences
Interval TimerControls fixed-duration outputsValve actuation, injection molding cycles
Repeat Cycle TimerAlternates between on/off statesConveyor indexing, periodic lubrication systems

3. Structure and Components

Typical TDR construction includes:

  • Enclosure: Flame-retardant polymer housing (IP20-IP67 ratings)
  • Electromagnetic System: Coil assembly with laminated iron core
  • Contact Mechanism: Silver alloy contacts (NO/NC configurations)
  • Timing Circuit: Analog RC circuits or digital microcontrollers
  • User Interface: Dial/potentiometer or digital display for setting adjustment

4. Key Technical Specifications

ParameterTypical RangeImportance
Timing Range0.1s-999hDetermines application flexibility
Accuracy 1% to 10msCritical for precision processes
Power Supply12-240V AC/DCMatches system voltage requirements
Contact Rating5-30A resistiveEnsures load compatibility
Ambient Temp. Range-20 C to +70 COperational reliability factor

5. Application Areas

Primary industries include:

  • Manufacturing: Press machine sequence control
  • Energy: Transformer cooling systems
  • Building Automation: HVAC fan delay control
  • Process Industry: Pump alternation systems
  • Transportation: Railway signal timing

Typical equipment integration: CNC machines, packaging lines, water treatment systems.

6. Leading Manufacturers and Products

ManufacturerKey Product SeriesDistinguishing Features
Siemens3RP25/3RP15 seriesDIN rail mounting, LED status display
OmronH3CR-A/-M modelsMulti-voltage capability, compact design
Schneider ElectricTesys T-ModTime seriesModbus communication, 12 timing functions
AutomationDirectDL-TDR seriesProgrammable via USB interface

7. Selection Recommendations

Key considerations:

  • Timing function type (ON/OFF delay, interval, etc.)
  • Environmental conditions (temperature, vibration)
  • Electrical requirements (voltage/frequency compatibility)
  • Mounting method (DIN rail, panel mount, socket mounting)
  • Agency approvals (CE, UL, CSA standards)

Case Study: A bottling plant successfully implemented Omron H3CR-M timers for conveyor synchronization, achieving 15% throughput improvement.

8. Industry Trends

Emerging developments include:

  • Integration with Industrial IoT (remote monitoring via Ethernet/IP)
  • Adoption of solid-state relay technology (SSR) for higher switching speeds
  • Energy-efficient designs meeting Ecodesign Directive 2019/1782
  • AI-enhanced predictive timing adjustment in smart manufacturing
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