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Mersen - formerly Ferraz Shawmut

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The Ferraz Shawmut Canadian NS fuse series has offset contacts with British (BS88) dimensions. The NS series has diagonally offset contacts with British standard dimensions. Neither fuse is dimensionally interchangeable with other North American fuses. They are for short-circuit protection only, in motor controllers, for example, where overload protection is provided by an overload relay.

Features and Benefits

BS 88 Dimensions

Approvals and Compliances


AC Rating

2 to 32A 440VAC, 80kA I.R.

DC Rating

2 to 32A, 250VDC 40kA I.R.