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What Class of fuse does the CD221N safety switch accept?

This switch accepts Class H or K fuses as standard. For design Series E1 or E2, options include Class R fuses (field install Class R Fuse Kit DRK30). With Class H or K fuses installed, the switch is UL listed for use on systems with up to 10,000 RMS Symmetrical Amperes available fault current. With Class R fuses (and DRK30 fuse kit installed) the switch is CSA listed for use on systems with up to 100,000 RMS Symmetrical Amperes available fault current.


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