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IEEE C37.27-1987

Historical Revision

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

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Revision Standard - Superseded. Low-voltage power circuit breakers of the 600 V insulation class with separately mounted current-limiting fuses, for use on ac circuits with available short-circuit current of 200 000 A (rms symmetrical) or less, are covered. Guidance is provided respecting coordination of circuit breaker and fuse, location of fuses, open fuse trip devices, addition of fuses to existing installations, protection of connected equipment, and tested combinations of circuit breakers and fuses.
This guide applies to low-voltage power circuit breakers of the 600 V insulation class with separately mounted current-limiting fuses for use on ac circuits with available short-circuit current of 200,000 A (rms symmetrical) or less. Low-voltage integrally fused power circuit breakers and combinations of fuses and molded-case circuit breakers are not covered by this guide. This guide sets forth recommendations believed essential for the selection of current-limiting fuses (see ANSIC97.1-1972 (R 1978) [3]) for use in combination with low-voltage power circuit breakers, rated in accordance with ANSI/IEEEC37.13-1981 [4].

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C37.27
Publication Date July 6, 1987
Language en - English
Page Count 16
Revision Level
Supercedes
Committee Switchgear
Publish Date Document Id Type View
March 17, 2016 C37.27-2015 Revision
March 31, 2009 C37.27-2008 Revision
July 6, 1987 C37.27-1987 Revision