Overview
The ABB MVR 0.80-10kA surge arrester is a surge arrester with metal-oxide (MO) resistors without spark gaps, designed and tested with reference to IEC 60099-4. Rated for 800VAC and 1000VDC operation, this arrester provides secure protection of medium voltage systems against overvoltages from atmospheric discharges and switching conditions. The MVR 0.80-10kA model combines proven ABB metal-oxide technology with robust PUR housing for long-term reliability in industrial installations.
Key Features
- Metal-oxide resistor technology: Direct molded PUR housing for environmental robustness, high quality and reliable, maintenance free
- High discharge rating: Maximum discharge current of 10KA suitable for industrial applications
- AC and DC rated: Dual-rated for both alternating and direct current systems
- No spark gap design: Eliminates spark gap maintenance and improves response time
- Indoor/outdoor capable: For alternating current (AC) and direct current (DC) systems for indoor and outdoor installations
Technical Specifications
- Nominal discharge current (8/20 µs): 5 kA peak
- High current impulse (4/10 µs): 65 kA peak
- Energy withstand capability: 2.0 kJ/kV (Uc, AC)
- Charge transfer capability: 0.5 As
- Voltage rating: 800VAC / 1000VDC
- Operating temperature range: –40 to +40 °C (with application guide for temperatures up to 80 °C)
- Altitude rating: Up to 1800 m
- System frequency: DC and 15 to 62 Hz power frequency
- Housing material: PUR (polyurethane molded)
- Standard compliance: IEC 60099-4
Typical Applications
Especially recommended for overvoltage protection of the insulation of LV products and medium-voltage distribution systems. Common uses include protection of transformers, motors, generators, capacitors, cable sheaths, and other electrical apparatus subject to atmospheric surges or switching transients in industrial facilities.
Compatibility & Replacements
The ABB MVR 0.80-10kA is part of ABB’s comprehensive MVR surge arrester family and maintains pin-for-pin compatibility with other K5/K10 series units in the same voltage class. MVR K5/K10 arresters are rated from 0.44 kV to 0.80 kV for AC and from 0.56 kV to 1.02 kV for DC. For replacement or interchangeability questions, consult ABB application guides or contact a qualified distributor to verify electrical and mechanical fit for your specific installation.
