The YCW1i series intelligent universal circuit breakers are designed for AC 50Hz distribution networks with a rated voltage up to 400V/690V. Covering a comprehensive current range, they serve to distribute electrical energy and provide reliable protection against overload, undervoltage, short circuit, and single-phase grounding faults. The series features intelligent protection functions with precise selectivity, enhancing power supply reliability and preventing unnecessary outages. Equipped with an open communication interface, these breakers support remote monitoring and control (“four remotes”), making them suitable for integration into modern automation systems and control centers. Compliant with IEC 60947-2 standards, they can also be used for infrequent line switching under normal operating conditions.

The YCM6i series molded case circuit breakers(hereinafter referred to as circuit breakers)are suitable for AC circuits with a frequency of 50Hz(or 60Hz).Their rated insulation voltageis 1000V(800V for the YCM6i-63 model),rated working voltage of 400V/690V,and ratedworking current up to 1000A.They are used for infrequent conversion of circuits and infre-quent starting of motors.The circuit breakers have overload,short-circuit,and undervoltageprotection functions,which can protect lines and power supply equipment from damage.
According to their rated ultimate short-circuit breaking capacity,the circuit breakers are di-vided into Type L(standard type)and Type M(high breaking type).
The circuit breakers feature small size,high breaking capacity,short arcing time,and vibra-tion resistance.
Compliance with standards:IEC 60947-2.
The circuit breakers allow reverse incoming lines.

General
YCM8 Series circuit breakers were developed according to the demand of domestic and international market as well as features of similar products.
Its rated insulation voltage up to 1000V, is suitable for AC 50Hz distribution network circuit whose rated operation voltage is up to 690V, rated operation current from 10A to 800A. It can distribute power, protect the circuit and power supply devices from the damage of overload, short circuit and under voltage, etc.
This series circuit breaker feature small volume, high breaking capacity and short arcing. It can be installed vertically (namely vertical installation) and also installed horizontally (namely horizontal installation).
It complies with standards of IEC60947-2.

YCHGL series load isolation switches (hereinafter referred to as switches)are suitable forAC 50Hz,rated voltage 660V,and rated current up to 3200A.They are used for infrequentconnection and disconnection of circuits and electrical isolaion.This product adopts a mod-ular design structure and has flexible and diverse combinations.Switches are widely usedin distribution systems and automation systems in construction,power,petroleum,chemical,and other industries.

Standard:IEC60947-3

AC 50Hz, rated voltage 660V, rated current 3200A. It is used for making and breaking circuit not frequently.

Standard: IEC60947-3

YCM3 Series moulded case circuit breaker,is new products,with small compact, modular,high break,double breakpoints,zero arcing,green environmer protection.

Suitable for AC50Hz,60Hz,rated operating voltage 690V and below, rated current 125A to 1600A distribution network,used to distribute electrical energy and protection lines and powersupply equipment from overload,short circuit and undervoltage failure hazards.

It can also be used as a non-frequent conversion of the line under normal conditions and in theinfrequentstart of the motor

YCM3 Series moulded case circuit breaker,is new products,with small compact, modular,high break,double breakpoints,zero arcing,green environmental protection.

Suitable for AC 50Hz,60Hz,rated operating voltage 690V and below, rated current 125A to 1600A distribution network,used to distribute electrical energy and protection lines and power supply equipment from overload,short circuit and undervoltage failure hazards.

It can also be used as a non-frequent conversion of the line under normal conditions and in the infrequent start of the motor.

General
YCQ9E series automatic transfer switch, rated working curent 16A to 630A,to be used in pow- er systems for ensuring the continuity of the supply, by transfering a load between two power supply sources. The switch has three working posions of “Main ( I ) cosing”, “Standby ( II )
closing” and “Double-of (0)”, which can be used for fire-fighting linkage and infrequent con-
necion and disconnecion of power supply systems. Mainly used in hospitals, shopping malls, banks, chemical industy, metalurgy, high-rise buildings, military facilities and fire-fighting occa- sions where power failure is not allowed.
Standards: IEC 60947-6-1

General
YCW3 series air circuit breakerthereinafter calledACB)issuitable for the circuitof AC50Hz/60Hz with ratedservicevoltage 400V,690V and ratedservicecurrent between200A and 6300A.Itis mainly used to distribute electric energy and protect circuitsand electric equipment against over-load,under-voltage,short-circuit and singlephase earthingfault.

General