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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | Symcom / Littelfuse |
| Manufacturer Product Number | 350-400-2-8 |
| Description | Voltage Monitor Relay; Lo V, Unbal, Loss; 380-480 VAC; TD 4s/2s; 2 relays 15A each |
| Datasheet | Download Datasheet |
The Littelfuse SymCom 350-400-2-8 is a 3-phase voltage monitor for 380-480 V AC motors. It protects against low voltage, voltage unbalance and single-phasing.
Trip / reset points: low voltage 90% / 93% of setpoint; voltage unbalance 6% fixed / 4.5% (NEMA).
Trip delay: 4 s (low voltage); 2 s (unbalance and phasing faults). Restart delay: 2-300 s adjustable (no manual reset). Reset: Automatic. Accuracy: ±1%. Diagnostics: Single LED diagnostics (five light patterns).
Output: 2 relays (2 Form C): 15 A each, 15 A general purpose; 1 hp @ 240 VAC. Mounting: Surface mount (#8 screws). Dimensions: 74.42 x 133.86 x 74.93 mm (2.93 x 5.27 x 2.95 in), H x W x D.
It operates from -40 to +70 °C and can be stored from -40 to +80 °C. Approvals: UL 508, CSA C22.2 No. 14.
| Category | |
| Manufacturer | Symcom / Littelfuse |
| Model | 350 |