House Service Cut-out Main Fuses

House Service Cut-out Main Fuses

These type IIa / 2a and IIb / 2b house service cut-out main fuse links are used to protect an entire house.

Lawson MF and ME cartridge fuses are the same length, but the MF fuses are fatter.

Fuse TypeLawson RefLengthDiameter
IIa / 2aME57mm (2-1/4")22.23mm (7/8")
IIb / 2bMF57mm (2-1/4")30.16mm (1-3/16")

Lawson type ME & MF house service fuse-links meet the requirements of both BS1361:1971 and BS88-3:2010.

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