The Macromatic TD-78126 is an 11 Pin Time Delay Relay. This digital set programmable plug-in relay has an input voltage of 12V DC and an output of 10A DPDT. It is a multi-function unit with 10 different settings. The unit features five pushbutton thumbwheels, one to choose a timing range, and the other three to precisely set a time within that range. The fifth thumbwheel selects the function and the red LED shows the status of the timing mode and time out conditions. The TD78126 uses an 11 pin 70170-D octal socket. Pilot duty rating. Note: Image is an approximation. Actual part may differ.

Timing Functions

On Delay
Interval On
Off Delay
Single Shot
Flasher OFF 1st
Flasher ON 1st
On/Off Delay
Single Shot Falling Edge
Watchdog
Triggered On Delay

The Off Delay, Single Shot, On/Off Delay, Single Shot Falling Edge, Watchdog, and Triggered On Delay functions operate through the use of a Control Switch trigger. The other functions do not require a trigger.

Specifications

Relay Function- Multi-Function
Relay Timing Range- 0.05 Sec - 999 Hours
Input Voltage- 12V DC
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- On Delay/Interval/Flasher: 0.1 Seconds
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 @ 120V 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)

Macromatic TD-7 Series Relay Installation Instructions

Explanation of Macromatic Time Delay Relay Timing Functions

Macromatic TD-7 Series Time Delay Relay Competitive Comparison

Macromatic 12V DC Time Delay Relay TD-78126