What Class of fuse does the CH321N and CH321NRB safety switches accept?
Issue: Class of Fuses
Product Line: Heavy Duty Safety Switches
Environment: Fuse Type
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 CSA 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 CSA 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.