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Will Square D 800A - 1200A Heavy Duty safety switches accept a class L fuse that is rated below 601A?


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Square D 800A -1200A Safety switches are  UL listed to accept Class L fuses listed to UL248-10 (Low-Voltages Fuses Part 10, Class L Fuses).   The scope of UL248-10 includes fuses in the range of 601-6000A up to 600Vac or dc.  Additionally; there are UL component recognized and non listed fuses in a Class L format rated 200 to 600A available.  These fuses will physically fit the mounting provisions in the switch for class L fuses.  However, these fuses may not comply to standardized performance criteria.  Square D is unable to test switches with fuses that do not adhere to established listing standards.  

CTA-ID : 2034882
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