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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | ATC Diversified |
| Manufacturer Product Number | TDU-120-ALA |
| Description | TDR; 0.15 s...64 min; Lock Nut; Multi-Function; 120V AC/DC; 11 Pin (Octal); 1C SPDT |
| Datasheet | Download Datasheet |
The ATC Diversified TDU-120-ALA is a multi-function timer for 120 V AC/DC, with isolated SPDT relay contacts rated 10 A resistive at 250 V AC or 24 V DC. Its delay is adjustable from 0.15 seconds to 64 minutes with a lock-nut adjusting shaft.
Programmable multi-mode timer: Interval, ON-Delay, OFF-Delay, Single Shot, Flasher OFF first or Flasher ON first, chosen by jumpers between base pins.
Output: 1C SPDT relay, 10 A resistive at 250 V AC or 24 V DC; 211 VA inductive at 120 V AC. It has no LED indicator. Repeat accuracy: 0.1% typical, 0.5% maximum. Setting accuracy: Maximum setting ±10%, minimum setting +0%/-20%. Supply tolerance: ±10% of nominal; 50/60 Hz. Power: 3 W. Life: 10,000,000 operations mechanical, 100,000 electrical.
It plugs into an 11 pin octal socket (RB-11 or PF113A). It operates from 0 to +55 °C and stores from -45 to +85 °C. Approvals: UL Recognized (E55826).
| Category | |
| Manufacturer | ATC Diversified |
| Model | TDU |
| Output Technology | Electromechanical Relay |
| Timing Function | Multi-Function |
| Delay Time | 0.15 s...64 min |
| Time Ranges | 0.15-15 s, 0.6-60 s, 5-480 s, 0.6-64 min (jumper selected) |
| Timing Adjustment Method | Locking shaft (screwdriver adjust) |
| Timing Initiate Method | Input Voltage |
| Available Timing Functions | Interval, On Delay, Off Delay, Single Shot, Flasher (OFF 1st), Flasher (ON 1st) |
| Status Indicator | None |
| Contact Configuration | 1C SPDT |
| Output Rating | 10 A resistive at 250 V AC or 24 V DC; 211 VA inductive at 120 V AC |
| Input Voltage | 120V AC/DC |
| Termination Style | Plug In, 11 Pin (Octal) |
| Mounting Type | Socketable |
| Socket Family | 11 Pin Octal |
| Required Socket | RB-11 or PF113A |
| Operating Temperature | 0...+55 °C (-45...+85 °C) |
| Approvals | UL Recognized (E55826) |
| Setting Accuracy (%) | Maximum setting ±10%, minimum setting +0%/-20% |
| Repeatability (%) | 0.1% typical, 0.5% maximum |
| Mechanical Life | 10,000,000 cycles (100,000 cycles) |
| Input Operating Range | ±10% of nominal; 50/60 Hz |
| Rated Power | 3 W |