The 256-208 is a three-phase voltage and phase sequence monitor designed to detect phase failure, incorrect sequence, and low voltage conditions. It operates from 3×208 VAC supply, with adjustable minimum voltage threshold from 70% to 95% of nominal and a fixed cutoff at 60%. The device features a SPDT relay output rated at 8 A / 250 VAC with 2500 VA switching capacity, a 500 ms fixed time delay, and an adjustable delay of 0 to 10 seconds. A red LED indicates faults, and a green LED indicates power presence. It is DIN rail mounted, complies with UL and CE standards, is RoHS compliant, and meets EN 60255-6 and EN 61010-1. The operating temperature range is -20°C to +55°C, with IP40 protection from the front panel.
| Quarktwin Technology Ltd. | |
|---|---|
| Product Category | Protective Relays and Monitoring Relays |
| Product Number | 256-208 |
| Product Name | Monitor - Relay Output |
| Approvals | RoHS |