TDR Series - Relay-Output, Recycling Time Delay Relay

Littelfuse Recycle Time Delay Relays
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.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Output
Form
Storage Temperature (F/C)Time Delay RangeSample capableCompare
TDR1A2212VDCDPDT-30° to 85°C (-22°F to 185°F)ON time first: 1 - 1 023s in 1s increments; OFF: 1 - 1 023s in 1s incrementsNo
TDR2A2324VACDPDT-30° to 85°C (-22°F to 185°F)ON time first: 1 - 1 023s in 1s increments; OFF: 10 - 10 230s in 10s incrementsNo
TDR4A11120VACDPDT-30° to 85°C (-22°F to 185°F)ON time first: 0.1 - 102.3s in 0.1s increments; OFF: 0.1 - 102.3s in 0.1s incrementsNo
TDR4A12120VACDPDT-30° to 85°C (-22°F to 185°F)ON time first: 0.1 - 102.3s in 0.1s increments; OFF: 1 - 1 023s in 1s incrementsNo
TDR4A13120VACDPDT-30° to 85°C (-22°F to 185°F)ON time first: 0.1 - 102.3s in 0.1s increments; OFF: 10 - 10 230s in 10s incrementsNo
TDR4A22120VACDPDT-30° to 85°C (-22°F to 185°F)ON time first: 1 - 1 023s in 1s increments; OFF: 1 - 1 023s in 1s incrementsNo
TDR4A23120VACDPDT-30° to 85°C (-22°F to 185°F)ON time first: 1 - 1 023s in 1s increments; OFF: 10 - 10 230s in 10s incrementsNo
TDR4A33120VACDPDT-30° to 85°C (-22°F to 185°F)ON time first: 10 - 10 230s in 10s increments; OFF: 10 - 10 230s in 10s incrementsNo
TDR4B22120VACDPDT-30° to 85°C (-22°F to 185°F)ON time first: 1 - 1 023s in 1s increments; OFF: 1 - 1 023s in 1s incrementsNo
TDR4B23120VACDPDT-30° to 85°C (-22°F to 185°F)ON time first: 1 - 1 023s in 1s increments; OFF: 10 - 10 230s in 10s incrementsNo
TDR6A22230VACDPDT-30° to 85°C (-22°F to 185°F)ON time first: 1 - 1 023s in 1s increments; OFF: 1 - 1 023s in 1s incrementsNo