What are Time Delay Relays ?
Time Delay Relays are electromechanical devices that delay the operation of a circuit based on a predetermined time interval. They are widely used in applications such as switching and control panels, production electronics assembly, and maintenance tasks. Important specifications for selection include Delay Time, which determines the timing accuracy; Contact Rating @ Voltage, which ensures the relay can handle the required load; and Relay Type, which affects the relay's operational characteristics. Validating lifecycle status and alternate-source options is essential for procurement teams to mitigate sourcing risks.
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| Part & Mfr | Circuit | Contact Rating @ Voltage | Delay Time | Function | Mounting Type | Relay Type | Termination Style | Timing Adjustment Method | Timing Initiate Method | Voltage | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Littelfuse Inc.
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SPST-NO (1 Form A) | - | 0.1 Sec ~ 63 Min | Programmable (Multi-Function) | DIN Rail | Solid State Relay | Screw Terminal | DIP Switches | Input Voltage | 9 ~ 110VDC | |
Littelfuse Inc.
|
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DPDT (2 Form C) | 10A @ 120/240VAC | 0.1 Sec ~ 1705 Hrs | Programmable (Multi-Function) | Socketable | Mechanical Relay | Plug In, 8 Pin (Octal) | DIP Switches | Input Voltage, Trigger Signal | 120VAC | |
Littelfuse Inc.
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DPDT (2 Form C) | 10A @ 120/240VAC | 0.1 Sec ~ 1705 Hrs | Programmable (Multi-Function) | Socketable | Mechanical Relay | Plug In, 11 Pin (Octal) | DIP Switches | Input Voltage, Trigger Signal | 120VAC | |
Omron
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SPDT (1 Form C) | 5A @ 250VAC | 0.1 Sec ~ 1200 Hrs | Repeat Cycle, Twin Timer | DIN Rail | Mechanical Relay | Screw Terminal | Screwdriver Slot | Input Voltage | 12VDC | |
Littelfuse Inc.
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SPDT (1 Form C) | 10A @ 120/240VAC | 1 Sec ~ 1023 Sec | Off-Delay, On-Delay | Socketable | Mechanical Relay | Plug In, 8 Pin (Octal) | DIP Switches | Input Voltage, Trigger Signal | 120VAC | |
Omron
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SPDT (1 Form C) | 5A @ 250VAC | 0.1 Sec ~ 12 Sec | Off-Delay | DIN Rail | Mechanical Relay | Screw Terminal | Screwdriver Slot | Input Voltage | 100 ~ 120VAC | |
Littelfuse Inc.
|
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DPDT (2 Form C) | 10A @ 120/240VAC | 1 Sec ~ 1023 Sec | Repeat Cycle | Socketable | Mechanical Relay | Plug In, 8 Pin (Octal) | DIP Switches | Input Voltage | 120VAC | |
Omron
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DPDT (2 Form C) | 5A @ 250VAC | 0.05 Sec ~ 12 Sec | Off-Delay | Socketable | Mechanical Relay | Plug In, 8 Pin (Octal) | Hand Dial | Input Voltage | 110VAC | |
Littelfuse Inc.
|
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DPDT (2 Form C) | 10A @ 120/240VAC | 0.1 Sec ~ 102.3 Sec | Off-Delay | Socketable | Mechanical Relay | Plug In, 11 Pin (Octal) | DIP Switches | Input Voltage, Trigger Signal | 120VAC | |
Omron
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- | - | 0.001 Sec ~ 9999 Hrs | Programmable (Multi-Function) | Socketable | Solid State Relay | Plug In, 11 Pin (Octal) | Up/Down Digit Keys | Input Voltage, Trigger Signal | 100 ~ 240VAC | |
Omron
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SPDT (1 Form C) | 5A @ 250VAC | 0.001 Sec ~ 9999 Hrs | Programmable (Multi-Function) | Socketable | Mechanical Relay | Plug In, 8 Pin (Octal) | Up/Down Digit Keys | Input Voltage, Trigger Signal | 100 ~ 240VAC | |
Omron
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SPST-NO (1 Form A) | 15A @ 250VAC | 1 Min ~ 24 Hrs | Programmable (Multi-Function) | Panel Mount | Mechanical Relay | Screw Terminal | Up/Down Digit Keys | Input Voltage | 100 ~ 240VAC | |
Omron
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SPDT (1 Form C) | 3A @ 250VAC | 0.001 Sec ~ 9.999 Sec | On-Delay | Socketable | Mechanical Relay | Plug In, 8 Pin (Octal) | Up/Down Digit Keys | Input Voltage | 12 ~ 48VDC | |
Omron
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SPDT (1 Form C) | 3A @ 250VAC | 0.001 Sec ~ 9.999 Sec | On-Delay | Socketable | Mechanical Relay | Plug In, 8 Pin (Octal) | Up/Down Digit Keys | Input Voltage | 100 ~ 240VAC | |
Omron
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SPDT (1 Form C) | 3A @ 250VAC | 1 Sec ~ 99 Min 59 Sec | On-Delay | Socketable | Mechanical Relay | Plug In, 8 Pin (Octal) | Up/Down Digit Keys | Input Voltage | 100 ~ 240VAC | |
Red Lion Controls
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SPST-NO (1 Form A) | 5A @ 250VAC | 0.001 Sec ~ 999.9 Hrs | Programmable (Multi-Function) | Panel Mount | Solid State Relay | Screw Terminal | Up/Down Digit Keys | Input Voltage | 24VAC, 18 ~ 36VDC | |
Omron
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SPDT (1 Form C) | 3A @ 250VAC | 0.001 Sec ~ 9.999 Sec | On-Delay | Socketable | Mechanical Relay | Plug In, 8 Pin (Octal) | Up/Down Digit Keys | Input Voltage | 100 ~ 240VAC | |
Omron
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SPST-NO (1 Form A) x 2 | 15A @ 250VAC | 1 Min ~ 1 Week | Programmable (Multi-Function) | Panel Mount | Mechanical Relay | Screw Terminal | Up/Down Digit Keys | Input Voltage | 24VDC | |
Phoenix Contact
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SPDT (1 Form C) | 10A @ 250VAC | - | On-Delay | DIN Rail | Mechanical Relay | Screw Terminal | Screwdriver Slot | Input Voltage | 24VDC | |
TE Connectivity
|
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DPDT (2 Form C) | 10A @ 240VAC | 1.5 Sec ~ 15 Sec | Off-Delay | Panel Mount | Mechanical Relay | Screw Terminal | Hand Dial | Input Voltage | 120VAC | |
TE Connectivity
|
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DPDT (2 Form C) | 10A @ 120VAC | 0.1 Sec ~ 10 Hrs | Programmable (Multi-Function) | Socketable | Mechanical Relay | Plug In, 11 Pin (Octal) | Hand Dial | Input Voltage | 120VAC, 125VDC | |
Crouzet
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- | - | Fixed, 0.5 Sec | Repeat Cycle | DIN Rail | Solid State Relay | Quick Connect - 0.250" (6.3mm) | Fixed | Input Voltage | 220VAC | |
Crouzet
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- | - | Fixed, 2 Sec | On-Delay | Chassis Mount | Solid State Relay | Quick Connect - 0.250" (6.3mm) | Fixed | Input Voltage | 110VAC/DC | |
Littelfuse Inc.
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SPST-NO (1 Form A) | - | Fixed, 90 Sec | On-Delay | Chassis Mount | Solid State Relay | Wire Leads | Fixed | Input Voltage | 12VDC | |
Littelfuse Inc.
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SPST-NO (1 Form A) | - | 2 Sec ~ 180 Sec | On-Delay | Chassis Mount | Solid State Relay | Quick Connect - 0.250" (6.3mm) | External Resistor | Input Voltage | 24VAC | |
Littelfuse Inc.
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SPST-NO (1 Form A) | - | Fixed, 5 Min | On-Delay | Chassis Mount | Solid State Relay | Quick Connect - 0.250" (6.3mm) | Fixed | Input Voltage, Trigger Signal | 24VAC | |
Crouzet
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- | - | 1 Sec ~ 100 Sec | On-Delay | Chassis Mount | Solid State Relay | Quick Connect - 0.250" (6.3mm) | Screwdriver Slot | Input Voltage | 110VAC/DC | |
Littelfuse Inc.
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SPST-NO (1 Form A) | - | Fixed, 120 Sec | Off-Delay | Chassis Mount | Solid State Relay | Quick Connect - 0.250" (6.3mm) | Fixed | Input Voltage | 230VAC | |
Sensata
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SPST-NO (1 Form A) | 6A @ 280VAC | - | Off-Delay | DIN Rail | Solid State Relay | Screw Terminal | Screwdriver Slot | Input Voltage | 90 ~ 140VAC/DC | |
Sensata
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SPST-NO (1 Form A) | 6A @ 280VAC | - | Off-Delay | DIN Rail | Solid State Relay | Screw Terminal | Screwdriver Slot | Input Voltage | 180 ~ 240VAC/DC | |
Sensata
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SPST-NO (1 Form A) | 6A @ 280VAC | - | On-Delay | DIN Rail | Solid State Relay | Screw Terminal | Screwdriver Slot | Input Voltage | 12 ~ 24VAC/DC | |
|
TE Connectivity
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- | - | - | - | - | - | - | - | - | - | |
Littelfuse Inc.
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SPST-NO (1 Form A) | - | Fixed, 3 Min | Interval | Chassis Mount | Solid State Relay | Quick Connect - 0.250" (6.3mm) | Fixed | Input Voltage | 12 ~ 120VDC | |
Littelfuse Inc.
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SPST-NO (1 Form A) | - | Fixed, 5 Sec, 18 Min | Repeat Cycle | Chassis Mount | Solid State Relay | Quick Connect - 0.250" (6.3mm) | Fixed | Input Voltage | 24VAC | |
Crouzet
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- | - | 0.1 Sec ~ 100 Hrs | Programmable (Multi-Function) | DIN Rail | Solid State Relay | Screw Terminal | Screwdriver Slot | Input Voltage, Trigger Signal | 24 ~ 240VAC | |
Omron
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SPDT (1 Form C) | 3A @ 250VAC | 0.1 Min ~ 10 Hrs | Programmable (Multi-Function) | Socketable | Mechanical Relay | Plug In | Thumbwheel Switches | Input Voltage | 24VAC | |
Altech Corporation
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SPDT (1 Form C) | 16A @ 240VAC | - | Programmable (Multi-Function) | DIN Rail | Mechanical Relay | Screw Terminal | Up/Down Digit Keys | Input Voltage | 110 ~ 240VAC | |
Littelfuse Inc.
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SPDT (1 Form C) | 10A @ 125VAC | Fixed, 35 Min | One Shot | Chassis Mount | Mechanical Relay | Quick Connect - 0.250" (6.3mm) | Fixed | Input Voltage, Trigger Signal | 12VDC | |
Omron
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SPDT (1 Form C) | 3A @ 250VAC | 0.1 Min ~ 10 Hrs | Programmable (Multi-Function) | Socketable | Mechanical Relay | Plug In | Thumbwheel Switches | Input Voltage | 24VDC | |
Littelfuse Inc.
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SPDT (1 Form C) | 30A @ 125/240VAC | Fixed, 3 Min | On-Delay | Chassis Mount | Mechanical Relay | Quick Connect - 0.250" (6.3mm) | Fixed | Input Voltage | 120VAC | |
Sensata
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SPST-NO (1 Form A) | 6A @ 48VDC | - | Repeat Cycle | DIN Rail | Solid State Relay | Screw Terminal | Screwdriver Slot | Input Voltage | 12 ~ 24VAC/DC | |
Omron
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DPDT (2 Form C) | 5A @ 250VAC | 0.1 Min ~ 10 Hrs | Programmable (Multi-Function) | Socketable | Mechanical Relay | Plug In | Hand Dial | Input Voltage | 12VDC | |
Omron
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DPDT (2 Form C) | 5A @ 250VAC | 0.1 Min ~ 10 Hrs | Programmable (Multi-Function) | Socketable | Mechanical Relay | Plug In | Hand Dial | Input Voltage | 24VDC | |
NTE Electronics
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- | - | 1 Sec ~ 1023 Sec | On-Delay | Chassis Mount | Solid State Relay | Quick Connect - 0.250" (6.3mm) | DIP Switches | - | 95 ~ 145VAC | |
Crouzet
|
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SPDT (1 Form C) | 8A @ 250VAC | 0.1 Sec ~ 100 Hrs | Star Delta Controller | DIN Rail | Mechanical Relay | Screw Terminal | Screwdriver Slot | Input Voltage | 24 ~ 240VAC, 24VDC | |
Littelfuse Inc.
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SPST-NO (1 Form A) | - | 10 FPM ~ 100 FPM | Repeat Cycle | Chassis Mount | Solid State Relay | Quick Connect - 0.250" (6.3mm) | Screwdriver Slot | Input Voltage, Trigger Signal | 24 ~ 240VAC | |
Omron
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SPDT (1 Form C) | 5A @ 250VAC | 1 Sec ~ 120 Sec | Star Delta Controller | DIN Rail | Mechanical Relay | Screw Terminal | Screwdriver Slot | Input Voltage | 12VDC | |
Crouzet
|
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SPDT (1 Form C) | 8A @ 250VAC | 0.1 Sec ~ 100 Hrs | Programmable (Multi-Function) | DIN Rail | Mechanical Relay | Spring Terminal | Screwdriver Slot | Input Voltage, Trigger Signal | 12 ~ 240VAC/DC | |
Carlo Gavazzi
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SPDT (1 Form C) x 2 | 8A @ 250VAC | 0.1 Sec ~ 100 Hrs | On-Delay | DIN Rail | Mechanical Relay | Screw Terminal | Screwdriver Slot | Input Voltage | 24 ~ 240VAC/DC | |
Crouzet
|
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DPDT (2 Form C) | 8A @ 250VAC | 0.1 Sec ~ 100 Hrs | Programmable (Multi-Function) | DIN Rail | Mechanical Relay | Screw Terminal | Screwdriver Slot | Input Voltage, Trigger Signal | 24 ~ 240VAC, 24VDC |
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