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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | SSAC / Littelfuse |
| Manufacturer Product Number | ORS24A35 |
| Description | TDR; 3...300 s; Ext RT Adj; 24V AC; 1C SPDT; Single Shot; QC 0.250"; Surface Mount |
| Datasheet | Download Datasheet |
The Littelfuse SSAC ORS24A35 is a single shot timer for 24 V AC, with isolated SPDT relay contacts rated 10 A resistive at 120/240 V AC and 28 V DC. Its delay is adjustable from 3 to 300 seconds with an external resistor across its RT terminals.
Input voltage must be applied before and during timing. A momentary or maintained closure of the initiate switch energizes the output relay for the set time; opening or reclosing the switch during timing has no effect. Open PC board construction for OEM equipment.
Output: 1C SPDT relay, 10 A resistive at 120/240 V AC and 28 V DC; 1/3 hp at 120/240 V AC (isolated contacts). Repeat accuracy: ±2% or 20 ms, whichever is greater. Setting accuracy: Guaranteed range; ±10% over temperature and voltage. Reset time: 50 ms. Supply tolerance: -15% / +20% of nominal; 50/60 Hz. Power: 2.25 W. Life: 10,000,000 operations mechanical, 1,000,000 electrical.
It is surface mounted and has 0.250 in (6.3 mm) male quick-connect terminals. It operates from -20 to +65 °C and stores from -30 to +85 °C.
| Category | |
| Manufacturer | SSAC / Littelfuse |
| Model | ORS |
| Output Technology | Electromechanical Relay |
| Timing Function | Single Shot |
| Delay Time | 3...300 s |
| Timing Adjustment Method | External resistor (RT terminals) |
| Timing Initiate Method | Control Switch |
| Contact Configuration | 1C SPDT |
| Output Rating | 10 A resistive at 120/240 V AC and 28 V DC; 1/3 hp at 120/240 V AC (isolated contacts) |
| Input Voltage | 24V AC |
| Termination Style | Quick Connect - 0.250" (6.3mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -20...+65 °C (-30...+85 °C) |
| Setting Accuracy (%) | Guaranteed range; ±10% over temperature and voltage |
| Repeatability (%) | ±2% or 20 ms, whichever is greater |
| Recovery Time (ms) | 50 |
| Mechanical Life | 10,000,000 cycles (1,000,000 cycles) |
| Input Operating Range | -15% / +20% of nominal; 50/60 Hz |
| Rated Power | 2.25 W |