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What Class of fuse does the D222N, D222NRB, D322N and D322NRB general duty safety switches accept?
Issue:
Product design features

Product Line:
General Duty Safety Switches

Environment:
Fuses

Cause:
Installation

Resolution:

These switches accept Class H or K fuses as standard. For design Series F01, options include Class R fuses (field install Class R Fuse Kit RFK03H). 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 RFK03H fuse kit installed) the switch is UL listed for use on systems with up to 100,000 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.

Schneider Electric USA

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