VMD421H-D-3 Voltage Relay 3-Phase 3(N)AC Model High Performance
Reliable and precise voltage monitoring for 3-phase electrical systems ensuring optimal performance and protection.
| Certifications | CE, UL, RoHS |
| SKU / MPN | VMD421H-D-3 |
| What’s in the box | Voltage relay unit, mounting screws, user manual |
| Operating Temperature | -20°C to +60°C |
| Response Time | Less than 100 ms |
| Contact Type | 3 Form C (changeover) contacts |
| Mounting | DIN rail mounting |
| Input Frequency | 50/60 Hz |
| Protection Class | IP20 |
| Display | LED status indicators |
Key benefits: Provides accurate voltage detection and protection for three-phase systems, preventing equipment damage due to overvoltage, undervoltage, phase loss, or phase imbalance.
Typical applications: Industrial automation, motor control centers, power distribution panels, and electrical protection systems in manufacturing plants and commercial buildings.
Order number: VMD421H-D-3 Voltage Relay 3-Phase 3(N)AC Model High Performance
Lifecycle: Active production with ongoing support and spare parts availability.
Documentation: User manual, wiring diagrams, and installation guide available for download.










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