The tripping characteristics of circuit breakers are divided into A, B, C, D, K, etc., and their meanings are as follows:
Type A tripping characteristics: the tripping current is (2~3) In, suitable for protecting semiconductor electronic circuits, measuring lines with low-power power transformers, or systems with long lines and low short-circuit current;
Type B tripping characteristics: the tripping current is (3~5) In, suitable for household power distribution systems, protection of household appliances and personal safety protection;
C-type tripping characteristics: the tripping current is (5-10) In, suitable for protecting power distribution lines and lighting lines and motor circuits with high switching current;
D-type tripping characteristics: the tripping current is (10-20) In, suitable for protecting equipment with high inrush current, such as transformers, solenoid valves, etc.;
K-type tripping characteristics: It has 1.2 times the thermal tripping action current and 8 to 14 times the magnetic tripping action range, which is suitable for protecting motor circuit equipment and has high anti-shock current capability
Post time: Aug-05-2023
