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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 | DLMUBLAAA |
| Description | Voltage Monitor Relay; Lo/Hi V, Unbal, Loss, Rev; 200...480V AC |
| Datasheet | Download Datasheet |
The Littelfuse SSAC DLMUBLAAA is a universal 3-phase voltage monitor for 200-480 V AC systems. It protects against phase loss and reversal, over- and undervoltage, voltage unbalance and over/under frequency, measuring each phase with microcontroller accuracy.
Trip points: high voltage 109-113% of the adjusted line voltage / -3% of trip; low voltage 88-92% of the adjusted line voltage / +3% of trip; unbalance 2-10% adjustable / -0.7%. Trip delay: 1-30 s adjustable (phase reversal and loss 200 ms). Restart delay: 0.6-300 s adjustable, lockout (minimum off time). Output: SPDT 10 A resistive at 240 V AC, 8 A at 277 V AC, NO 1/4 hp at 120 V AC, 1/3 hp at 240 V AC; alarm NO 2 A at 277 V AC (isolated). Contacts: 1 Form C (SPDT) + 1 Form A (NO alarm). Indicator: LED diagnostics. Approvals: ASME A17.1 rule 210.6; NEMA MG1 14:30, 14:35.
Mounting: DIN Rail or Surface Mount. It operates from -40 to +60 °C and stores from -40 to +85 °C.
| Category | |
| Manufacturer | SSAC / Littelfuse |
| Model | DLMU |