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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 | TSD-120-ARC-4H |
| Description | TDR; 2.4 min...4 h; Ext RT Adj; Off Delay; 120V AC; QC 0.250"; 1A SPST-NO |
| Datasheet | Download Datasheet |
The ATC Diversified TSD-120-ARC-4H is a solid-state delay-on-break (off-delay) timer module for 120 V AC. Its delay is adjustable from 2.4 minutes to 4 hours with an external resistor across its RT terminals.
Supply voltage is applied continuously. Closing the control switch energizes the output relay; opening it starts the delay, and at the end of the delay the relay de-energizes. Re-closing the switch during the delay resets it.
Output: 1A SPST-NO. It has no LED indicator. Repeat accuracy: 1% maximum, no first cycle effect. Setting accuracy: Maximum setting ±10%, minimum setting +0%/-20%. Supply tolerance: ±10% of nominal; 50/60 Hz.
It is surface mounted and has 0.250 in (6.3 mm) male quick-connect terminals. It operates from 0 to +55 °C and stores from -45 to +85 °C. Approvals: UL Recognized, cUL Recognized (E55826).
| Category | |
| Manufacturer | ATC Diversified |
| Model | TSD |
| Output Technology | Solid State |
| Timing Function | Off Delay |
| Delay Time | 2.4 min...4 h |
| Timing Adjustment Method | External resistor (RT terminals) |
| Timing Initiate Method | Control Switch |
| Status Indicator | None |
| Contact Configuration | 1A SPST-NO |
| Output Rating | 1 A resistive at 24 V AC (25 VA), 1 A at 120 V AC (125 VA), 0.5 A at 240 V AC (125 VA) |
| Input Voltage | 120V AC |
| Termination Style | Quick Connect - 0.250" (6.3mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | 0...+55 °C (-45...+85 °C) |
| Approvals | UL Recognized, cUL Recognized (E55826) |
| Setting Accuracy (%) | Maximum setting ±10%, minimum setting +0%/-20% |
| Repeatability (%) | 1% maximum, no first cycle effect |
| Input Operating Range | ±10% of nominal; 50/60 Hz |