The Macromatic TD-71521 is a Single Shot Time Delay Relay. This 11 pin plug-in relay has an input voltage of 240V AC with an output of 10A DPDT. It has a time range of 0.05 sec to 999 hours. The unit has one pushbutton thumbwheel that selects one of seven time ranges, while three other thumbwheels digitally set the precise time delay within that range. The red LED indicates the status of the timing mode and time out conditions. The TD71521 uses an 11 pin 70170-D octal socket. Note: Image is an approximation. Actual part may differ.

Specifications

• Relay Function- Single Shot
• Relay Timing Range- 0.05 Sec - 999 Hours
• Input Voltage- 240V AC
• Output- 10A DPDT
• Voltage Tolerance- AC Operation: +10/-15% of nominal at 50/60 Hz
  DC Operation: +10/-15% of nominal
• Load- 3VA
• Setting Accuracy- Constant Voltage/Temp: The greater amount of +/-0.1% of set time or +/-50ms, Variable Voltage/Temp: The greater amount of +/- 1% of set time or +/- 50ms.
• Repeat Accuracy- Constant Voltage/Temp: The greater amount of +/-0.1% of set time or +/-0.02 sec, Variable Voltage/Temp: The greater amount of +/- 1% of set time or +/- 0.02 sec.
• Reset Time- Functions with control switches: 0.04 Seconds
• Start Up Time- 0.05 Sec
• Maintain Function Time- 0.01 Sec
• Insulation Voltage- 2000 V
• Operating Temperature- -28 C to 65 C (-18 F to 149 F)
• Storage Temperature- -40 C to 85 C (-40 F to 185 F)
• Output Contacts- DPDT 10A @ 240V AC/30V DC,
  1/2HP @ 120/240V AC (N.O.), 1/3HP @ 120/240V AC (N.C.)
  B300 & R300; AC15 & DC13
• Life- Mechanical: 10,000,000 Operations, Full Load: 100,000 Operations
• Dimensions- 2.4" Height x 1.7" Width x 3" Depth
• Approvals- UL Recognized, CE, CSA, UL Listed (with Socket)

With the Single Shot function, the relay energizes though the use of a trigger, which also starts the time delay. The relay de-energizes after the time delay and the trigger needs to be applied again to re-energize. Input voltage must already be in place before the trigger is applied. Pilot duty rating.

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Macromatic TD-71521 Single Shot 240V Time Delay Relay