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Home › Lightning & Surges Protection › Bowthorpe Porcelain Surge Arresters (MAA/MBA/MCA/MDA Range)
Bowthorpe Porcelain Surge Arresters (MAA/MBA/MCA/MDA Range)
Porcelain surge arresters are available for applications up
to 400kV systems.
Porcelain housing designs have been used by us for over
55 years.
From 1945 we produced porcelain surge arresters to the
gapped silicone carbide pattern and since 1980 we have
produced arresters to the gapless ZnO design.
The design consists of porcelain housing which conforms
to IEC-815 with an Aero Dynamic shed profile.
The varistors, spacers and locating rings are assembled
under compression with pressure relief diaphragms at
either end. The air void is evacuated and replaced with dry
air, then sealed.
Routine tests are carried out to show that the
manufacturing conforms to the current International
standard.
Electrical Performance
 Specification: IEC60099-4
Classification: MAA Class 2 10kA/MBA Class 2 10kA/MCA Class 3 10kA/MDA Class 4 20kA
High Current Performance: 100kA
Pressure Relief: MAA 40 kA/MBA 25 kA/MCA** 65 kA/MDA** 65 kA
Energy Capability: according to IEC60099-4 (Clause 8.4.2 table 5 and 8.5.5) MAA Class 2 5 kJ/kV at Ur/MBA Class 2 5 kJ/kV at Ur/MCA Class 3 8.75kJ/kV at Ur/MDA Class 4 10 kJ/kV at Ur
Voltage Rating: MAA Rated Voltage from 3kV to 198kV//MBA Rated Voltage from 3kV to 156kV/MCA Rated Voltage from 3kV to 360kV/MDA Rated Voltage from 3kV to 360kV
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Data Sheet
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Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.
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Keison International Ltd. trading as:
Keison Products, VoIPon Solutions & 4Gon
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