scope:

This clause of Part 1 is applicable except as follows: Addition at the end of the first paragraph: This standard gives additional requirements for single- and two-pole circuit-breakers which, in addition to the above characteristics, are suitable for operation with direct current, and have a rated d.c. voltage not exceeding 220 V for single-pole and 440 V for two-pole circuit-breakers, a rated current not exceeding 125 A and a rated d.c. short-circuit capacity not exceeding 10 000 A. NOTE - This standard applies to circuit-breakers able to make and break both a.c. current and d.c. current. Delete the last two paragraphs.