What Class of fuse does ALL the 800Amp and 1200Amp, Heavy Duty Safety Switches accept? (like the H327, H367, H368, H368R and H368AWK)

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What class of fuse do ALL the 800 A and 1200 A heavy duty safety switches accept?

Issue:
Product design features

Product line:
Heavy Duty Safety Switches

Resolution:
The 800 A and 1200 A heavy duty safety switches accept class L fuses ONLY. With class L fuses 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.
NOTE: Class L fuse is a 600 V construction fuse that is used in the 240 V rated switches