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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 | SLA-120-ALA |
| Description | Phase Monitor Relay; 3-Phase; (95...130)V AC; 2C DPDT |
| Datasheet | Download Datasheet |
The ATC Diversified SLA-120-ALA is a 3-phase monitor for 95-130 V AC systems. It drops its output relay out on phase loss, phase reversal and undervoltage and resets once the fault clears.
Trip points: undervoltage 79-108 V AC (one phase low); 85-117 V AC (all three phases low). Adjustment: lock shaft adjusted; tracks the operating-voltage setting (one phase below 83% or all three below 90%). Trip delay: phase loss / reversal 0.5 s; undervoltage 0.5 s. Restart: 250 ms. Reset: automatic upon correction of the fault.
Output: 2C DPDT, 10 A resistive at 240 V AC; 345 VA inductive. Mounting: plug-in, on an 11-pin octal (RB-11 socket) base. Indicator: LED, glows when all conditions are normal. It operates from 0 to +55 °C and stores from -45 to +85 °C.
| Category | |
| Manufacturer | ATC Diversified |
| Model | SLA |
| Monitoring Function | Phase Loss, Phase Reversal and Undervoltage |
| Number of Phases | 3-Phase |
| Input Voltage | (95...130)V AC |
| Undervoltage Trip Range | 79-108V AC (one phase low); 85-117V AC (all three phases low) |
| Undervoltage Trip Adjustment | Lock shaft adjusted; tracks the operating-voltage setting (one phase below 83% or all three below 90%) |
| Restart Delay (s) | 250 ms |
| Trip Delay - Phase Loss and Reversal (ms) | 0.5 s |
| Trip Delay - Undervoltage (s) | 0.5 s |
| Reset Method | Automatic upon correction of the fault |
| Status Indicator | LED, glows when all conditions are normal |
| Contact Configuration | 2C DPDT |
| Output Rating | 10 A resistive at 240 V AC; 345 VA inductive |
| Number of Poles | 2 |
| Mounting Type | Socketable |
| Termination Style | Plug In |
| Socket Family | 11 Pin Octal (RB-11 socket) |
| Operating Temperature (Storage) | 0...+55 °C (-45...+85 °C) |