The Macromatic THR-3816U is a programmable Time Delay Relay. This encapsulated, multi-range, multi-voltage relay has an input voltage of 24-240V AC and a 12-125V DC. It is a multi-function unit with 4 different settings and a time range of 0.1 sec to 100 minutes. The THR-3816U has an output of 10A SPDT which accommodates pilot duty and fractional HP loads. The time delay can be changed either on the unit or remotely. Featuring dimensions of 2" x 2", the encasement of the unit allows it to be used under more extreme conditions. Settings are chosen using DIP switches.

Timing Functions

• On Delay
• Off Delay
• Interval
• Single Shot

Time Delay Options

• Adjustable Time Delay
• Fixed Time Delay
• Remote Time Delay

Specifications

• Relay Function- Multi-Function
• Mounting Style- Surface Mount using a #8 or #10 screw
• Termination- 0.25" Male Quick Connect Terminals
• Relay Timing Range- 0.1 Sec - 100 min
• Input Voltage- 24-240V AC, 12-125V DC
• Output- 10A SPDT
• Voltage Tolerance- AC Operation: +10/-15% of nominal at 50/60 Hz.
  DC Operation: +10/-15% of nominal.
• Load- 2VA
• Setting Accuracy- Maximum Setting (Adjustable): +5%, -0%
  Minimum Setting (Adjustable): +0%, -50%
• Repeat Accuracy- The greater amount of +/- 0.1% or +/- 0.04 Sec
• Reset Time- Triggered with Input Voltage: 100ms
  Triggered with Control Switch: 40ms
• Startup Time- 0.05 sec
• Maintain Function Time- 0.01 sec
• 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- 10A @ 240VAC / 7A @ 28VDC SPDT, 1/4hp @ 120VAC (N.O.)
• Overall Dimensions- 2" Height x 2" Width x 1.14" Depth
• Life- Mechanical: 10,000,000 Operations, Full Load: 100,000 Operations
• Approvals- UL and CUL recognized

Macromatic THR Series Relay Installation Instructions

Explanation of Macromatic Time Delay Relay Timing Functions

Macromatic Encapsulated Time Delay Relay THR-3816U