The YC9VA-3 Overvoltage and Undervoltage Protector is engineered to safeguard electrical systems against voltage fluctuations. With a rated current of 63A and compatibility with three-phase 3×230V AC networks, it offers precise monitoring and protection for sensitive equipment.
Equipped with adjustable trip and reset delays, the device allows flexible configuration to meet different operational needs. Its digital display provides clear real-time voltage status and fault indication, while the neutral monitoring function enhances system safety.
Built with DIN rail mounting for easy installation, the YC9VA-3 combines robust mechanical endurance (up to 1,000,000 operations) with IP20 protection, making it suitable for controlled environments. This protector is widely used in industrial plants, commercial buildings, HVAC systems, and medical facilities, where stable voltage supply is critical.
TECHNICAL DETAILS:
| Specification | Value |
| Model | YC9VA-3 |
| Rated Current | 63A |
| Phases | 3P + N |
| Rated Voltage | 3×230V AC |
| Rated Frequency | 50/60Hz |
| Reset/Start Delay | 1–500 seconds |
| Trip Delay (>U / <U) | 0.1–30 seconds |
| Output Contact | 1NO (Normally Open) |
| Rated Insulation Voltage | 400V |
| Pollution Degree | 3 |
| Protection Degree | IP20 |
| Mounting Type | DIN rail |
| Display | Digital indicator |
| Mechanical Life | 1,000,000 operations |
| Applications | Industrial, commercial, HVAC, medical systems |
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