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What Class of fuse does the CH221N, CH221NRB, CH221NAWK, CH321N, CH321NRB, CH321NDS and CH321NAWK Canadian safety switches accept?

Issue:
Product design features

Product line:
Heavy Duty Safety Switches

Environment:
Fuse Class

Cause:
Application

Resolution:
These switches accept Class H or K fuses as standard. Options include Class R fuses (field install Class R Fuse Kit RFK03L). 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 RFK03L 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.



CTA-ID : 2051152
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