YCW1 series intelligent air circuit breakers (hereinafter called ACB) are applied for the network circuit of AC 50Hz, rated voltage 400V, 690V and rated current between 630A and 6300A. Mainly used for distributing energy and protecting the circuit and power supply device against short-circuit, undervoltage, single-phase ground fault, etc. The ACB has intelligent protection function and the key parts adopt intelligent release. The release can make the accurate selective protection, which can avoid cutting off the power and improve the reliability of power supply. The products conform with IEC60947-1,IEC60947-2 standards.
Rated current in scope of frame current 2000 Type-in: 630A, 800A, 1000A, 1250A, 1600A, 2000A; 3200 Type in: 2000A, 2500A, 3200A; 6300 Type-in: 4000A, 5000A, 6300A;
Pole number 3-default, 4 4 pole
Installation: Fixed type-horizontal, vertical; Draw out type horizonal, vertical. Note: 2000 type have vertical wiring, others are horizontal wiring.
Control unit L type protection of overload long time delay, short circuit short time delay, short circuit instantaneous and function of current flash columns instruction. M type protection of overload long time delay, short circuit short time delay, short circuit instantaneous, earth fault and function of digital current display, and self-diagnosis, fault memory. H type protection of overload long time delay, short circuit short time delay, short circuit instantaneous, earth fault and function of digital current display, and self-diagnosis, fault memory and load monitoring (communication)
Common use accessory Shunt release-AC230V, AC400V, DC220V; Undervoltage release-AC230V, AC400V, undervoltage instantaneous, undervoltage time-delay; Release (close) magnetic iron AC230V, AC400V, DC220V; Electric operation mechanism-AC230V, AC400V, DC110V, DC220V; Auxiliary switch standard type (4a4b), special type (5a5b, 6a6b). Note: a-normal open, b-normal close
Optional accessory: Mechanical inter lock: one circuit breaker (1 lock+ 1 key) two circuit breaker（steel cable inter lock, connecting rod inter lock, 2 lock+ 1 key) three circuit breakers (3 locks+2keys, connecting rod inter lock); Automatic power transfer system; Current transformer connected with neutral lead