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What Class of fuse does the DT322 and DT322RB safety switches accept?

These switches accept Class H or K fuses as standard. Options include Class R fuses (field install Class R Fuse Kit). With Class H or K fuses installed, the switches are UL listed for use on systems with up to 10,000 RMS Symmetrical Amperes available fault current. With Class R fuses (and Class R Fuse Kit installed) the switches are UL listed for use on systems with up to 200,000 RMS Symmetrical Amperes available fault current.
NOTE: DO NOT USE RENEWABLE LINK FUSES IN SQUARE D SAFETY SWITCHES. The use of renewable link fuses may adversely affect user safety, impair reliability and will void the warranty.


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