Littelfuse, Inc. Relay Output, Recycling Time Delay Relay TDR4A33

Description
The TDR Series of time-delay relays are comprised of digital circuitry and an isolated, 10A relay output. The on and off delays are selected by means of two, ten position binary switches, which allow the setting of the desired delay to be precise every time. Operation (Recycling - ON Time First)Upon application of input voltage, the green LED glows, the output relay is energized, the red LED glows, and the T1 ON time begins. At the end of the ON time, the output deenergizes, the red LED turns OFF and the T2, OFF time begins. At the end of the OFF time, the output relay energizes and the cycle repeats as long as input voltage is applied.Reset: Removing input voltage resets the output and time delays, and returns the sequence to the first delay. Operation (Recycling - OFF Time First)Upon application of input voltage, the green LED glows, the T1 OFF time begins, the load is OFF. At the end of the OFF time, the T2 ON time begins, the load energizes, and the red LED glows. At the end of the ON time the load de-energizes and the red LED turns OFF. The cycle repeats until input voltage is removed.Reset: Removing input voltage resets the output and the sequence to the OFF time.
  • Relay Output, Recycling Time Delay Relay - TDR4A33 - Littelfuse, Inc.
    Littelfuse, Inc.
Description
The TDR Series of time-delay relays are comprised of digital circuitry and an isolated, 10A relay output. The on and off delays are selected by means of two, ten position binary switches, which allow the setting of the desired delay to be precise every time. Operation (Recycling - ON Time First)Upon application of input voltage, the green LED glows, the output relay is energized, the red LED glows, and the T1 ON time begins. At the end of the ON time, the output deenergizes, the red LED turns OFF and the T2, OFF time begins. At the end of the OFF time, the output relay energizes and the cycle repeats as long as input voltage is applied.Reset: Removing input voltage resets the output and time delays, and returns the sequence to the first delay. Operation (Recycling - OFF Time First)Upon application of input voltage, the green LED glows, the T1 OFF time begins, the load is OFF. At the end of the OFF time, the T2 ON time begins, the load energizes, and the red LED glows. At the end of the ON time the load de-energizes and the red LED turns OFF. The cycle repeats until input voltage is removed.Reset: Removing input voltage resets the output and the sequence to the OFF time.
Datasheet
Datasheet Summary
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The TDR4A33 is a recycling time-delay relay with a 10A DPDT electromechanical relay output, designed for 120VAC operation with ON time first sequence. Delay times are set via binary switches: ON time ranges from 10 to 10,230 seconds in 10-second increments, and OFF time matches the same range. The relay has isolated contacts rated for 250VAC max, with mechanical life of 10⁷ cycles and electrical life of 10⁶ cycles. It uses an 8-pin plug-in package measuring 81.3 mm H × 60.7 mm W × 45.2 mm D, with green and red LEDs indicating input and output status. Input voltage tolerance is −20% to +10%, power consumption is ≤3.25W, and operating temperature ranges from −20°C to 65°C. Isolation voltage is ≥1500V RMS, and insulation resistance is ≥100 MΩ.

Datasheet Summary
Powered by GS/AI

The TDR4A33 is a recycling time-delay relay with a 10A DPDT electromechanical relay output, designed for 120VAC operation with ON time first sequence. Delay times are set via binary switches: ON time ranges from 10 to 10,230 seconds in 10-second increments, and OFF time matches the same range. The relay has isolated contacts rated for 250VAC max, with mechanical life of 10⁷ cycles and electrical life of 10⁶ cycles. It uses an 8-pin plug-in package measuring 81.3 mm H × 60.7 mm W × 45.2 mm D, with green and red LEDs indicating input and output status. Input voltage tolerance is −20% to +10%, power consumption is ≤3.25W, and operating temperature ranges from −20°C to 65°C. Isolation voltage is ≥1500V RMS, and insulation resistance is ≥100 MΩ.

Suppliers

Company
Product
Description
Supplier Links
Relay Output, Recycling Time Delay Relay - TDR4A33 - Littelfuse, Inc.
Littelfuse, Inc.
Rosemont, IL, United States
Relay Output, Recycling Time Delay Relay
TDR4A33
Relay Output, Recycling Time Delay Relay TDR4A33
The TDR Series of time-delay relays are comprised of digital circuitry and an isolated, 10A relay output. The on and off delays are selected by means of two, ten position binary switches, which allow the setting of the desired delay to be precise every time. Operation (Recycling - ON Time First)Upon application of input voltage, the green LED glows, the output relay is energized, the red LED glows, and the T1 ON time begins. At the end of the ON time, the output deenergizes, the red LED turns OFF and the T2, OFF time begins. At the end of the OFF time, the output relay energizes and the cycle repeats as long as input voltage is applied.Reset: Removing input voltage resets the output and time delays, and returns the sequence to the first delay. Operation (Recycling - OFF Time First)Upon application of input voltage, the green LED glows, the T1 OFF time begins, the load is OFF. At the end of the OFF time, the T2 ON time begins, the load energizes, and the red LED glows. At the end of the ON time the load de-energizes and the red LED turns OFF. The cycle repeats until input voltage is removed.Reset: Removing input voltage resets the output and the sequence to the OFF time.

The TDR Series of time-delay relays are comprised of digital circuitry and an isolated, 10A relay output. The on and off delays are selected by means of two, ten position binary switches, which allow the setting of the desired delay to be precise every time. Operation (Recycling - ON Time First)Upon application of input voltage, the green LED glows, the output relay is energized, the red LED glows, and the T1 ON time begins. At the end of the ON time, the output deenergizes, the red LED turns OFF and the T2, OFF time begins. At the end of the OFF time, the output relay energizes and the cycle repeats as long as input voltage is applied.Reset: Removing input voltage resets the output and time delays, and returns the sequence to the first delay. Operation (Recycling - OFF Time First)Upon application of input voltage, the green LED glows, the T1 OFF time begins, the load is OFF. At the end of the OFF time, the T2 ON time begins, the load energizes, and the red LED glows. At the end of the ON time the load de-energizes and the red LED turns OFF. The cycle repeats until input voltage is removed.Reset: Removing input voltage resets the output and the sequence to the OFF time.

Datasheet

Technical Specifications

  Littelfuse, Inc.
Product Category Solid State Relays
Product Number TDR4A33
Product Name Relay Output, Recycling Time Delay Relay
Mounting Socket or Plug-in Style; Plug-in socket
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