• IEEE C37.27-2024

IEEE C37.27-2024

IEEE Guide for Low-Voltage AC (635 V and below) Power Circuit Breakers Applied with Separately-Mounted Current-Limiting Fuses

IEEE , 12/13/2024

Publisher: IEEE

File Format: PDF

$28.00$56.00


This guide applies to unfused low-voltage ac power circuit breakers of the 635 V maximum voltage class with separately-mounted current-limiting fuses for use on ac circuits with available short-circuit currents of 200000 A (rms symmetrical) or less. Low-voltage ac fused power circuit breakers and combinations of fuses and molded-case circuit breakers are not covered by this guide. In this guide, the term circuit breaker means unfused low-voltage ac power circuit breaker. This guide sets forth recommendations believed essential for the selection of current-limiting fuses by the user (see NEMA FU-16 and UL 248-1) for use in combination with low-voltage ac power circuit breakers, rated in accordance with IEEE Std C37.13™ and applied in metal-enclosed low-voltage power circuit breaker switchgear in accordance with IEEE Std C37.20.1™. NOTE--The combination of a circuit breaker and separately mounted fuses is limited to 600 V based on fuse maximum voltage ratings. Revision Standard - Active. Application recommendations to assist in selection of separately mounted current-limiting fuses to be installed in series with low-voltage ac power circuit breakers are provided in this guide.

IEEE C37.27-2024 History

IEEE C37.27-2024

IEEE C37.27-2024

$28.00 $56.00

IEEE C37.27-2015

IEEE C37.27-2015

$28.00 $56.00

IEEE C37.27-2008

IEEE C37.27-2008

$43.00 $87.00

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