Description
The Moreday MD1 AC Surge Protective Device is a reliable and efficient solution for protecting electrical systems and devices from damage caused by power surges and transient overvoltages. Designed for residential, commercial, and industrial applications, the MD1 ensures the safety and longevity of your equipment by providing robust surge suppression and rapid response to voltage spikes.
Key Features:
- High Surge Capacity:
- Effectively handles high-energy surges, protecting sensitive electrical equipment from damage.
- Thermal Disconnection Mechanism:
- Built-in thermal protection ensures safe operation by disconnecting the SPD during extreme surge events or end-of-life conditions.
- Real-Time Status Monitoring:
- Equipped with a visual indicator to display operational status and notify users when maintenance or replacement is needed.
- Compact and Modular Design:
- Space-saving DIN rail mounting design for easy integration into electrical panels and quick replacement.
- Wide Voltage Compatibility:
- Supports single-phase and three-phase systems for versatile use in various setups.
- Compliant with Safety Standards:
- Meets international safety and performance certifications, ensuring reliable operation in critical environments.
| Parameter | Specification |
|---|---|
| Rated (Nominal) Operating Voltage (Un) | 275 V AC / 320 V AC / 385 V AC / 420 V AC (depending on variant) |
| Maximum Continuous Operating Voltage (Uc) | Up to approx. 420 V AC (for some variants) |
| Nominal Discharge Current (In, 8/20 µs) | 20 kA (for T1+T2 variants) |
| Maximum Discharge Current (Imax, 8/20 or 10/350 µs) | 40 kA or 50 kA (depending on variant) |
| Response Time (tA) | < 25 nanoseconds |
| Operating Temperature Range | –40 °C to +70 °C (or up to +85 °C in some models) |
| Mounting & Protection | DIN-rail 35 mm rail mount; Protection rating: IP20 |
The Moreday MD1 AC Surge Protective Device is an essential tool for any electrical system, providing peace of mind and ensuring uninterrupted performance. Protect your investments with the Moreday MD1 today!

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