standard
HJCPS, also known as "Control and Protective Switching Devices," is a new type of product in low-voltage electrical appliances, with the product category code "CPS" (abbreviation for Control and Protective Switching Devices). The standards it complies with are: IEC60947-6-2 "Low voltage switchgear and control equipment Part 6 Multi functional electrical appliances Section 2 Control and protection switchgear" (first edition in August 1992), GB14048.9 "Low voltage switchgear and control equipment Multi functional electrical appliances (equipment) Part 2: Control and protection switchgear (equipment)" (equivalent to using IEC90947-6-2).
The electrical design representation methods specified in IEC standards and national standards are shown in the figure.
The main feature of the HJCPS series control and protection switchgear is to achieve integrated and internally coordinated control and protection functions on a single structural form of product, which can replace various traditional separate components such as circuit breakers (fuses), contactors, overload (or overcurrent, phase failure) protection relays, starters, isolators, and motor comprehensive protectors. HJCPS has the function of both remote automatic control and on-site manual control for control operations, with coordinated time current protection characteristics. It has self coordinated control and protection, continuous operation after short circuit, high breaking ability, small arcing distance, long service life, adjustable protection setting current, easy operation, and a variety of complete supporting accessory modules. It can achieve control and protection of motor loads and distribution loads.
The emergence of HJCPS series control and protection switchgear fundamentally solves various problems caused by unreasonable control and protection coordination due to the use of discrete components (usually circuit breakers or fuses+contactors+overload relays) in traditional methods. Especially, it overcomes the phenomenon of inconsistent protection and control characteristics when combining electrical products with different assessment standards, greatly improving the operational reliability and continuous performance of control and protection systems.
The first generation of HJCPS series control and protection switchgear products have a relatively large volume and use bimetallic strip technology for protection. Although the second-generation product solved the problem of large volume. But there hasn't been any major breakthrough in protection technology. With the increasing application and deepening of microelectronics technology in the low-voltage electrical industry, our company aims at this opportunity and takes the path of high-end product design based on the latest microelectronics technology. On the basis of the HJCPS series products, we have invested heavily in developing the HJCPS series control and protection switchgear with international advanced level, overcoming the shortcomings of the HJCPS series products, gathering the advantages of discrete components in low-voltage electrical appliances, with complete functions and reliable performance, providing a basic component for simplifying and optimizing low-voltage distribution and control systems.
The HJCPS series control and protection switchgear is an improved product of KBO.

Main parameter description
◆Two external installation dimensions: 125 type (D frame) and 45 type (C frame).
◆The number of poles in the main circuit is divided into three poles and four poles.
◆The basic configuration of HJCPS control and protection switchgear is: main body+intelligent controller+auxiliary contact group.
◆The main body consists of the main circuit module, which includes the contact system module, short-circuit release, electromagnetic system module, and operating mechanism system module.
◆Short circuit breaking capacity level: C-economy type (35kA), Y-standard type (50kA), H-high breaking type (80kA).
◆The expected breaking time under short-circuit current is 2-3ms, with a current limiting coefficient below 0.2.
◆The auxiliary contact group consists of short circuit alarm contacts, overload alarm contacts, and a set of 2 normally open and 1 normally closed auxiliary contacts. 02 is 2 normally open and 1 normally closed+1 short circuit 1
Overload, 06 is 3 normally open 2 normally closed+1 short circuit 1 overload, can also be combined according to user requirements, but the maximum number of contacts cannot exceed 11 pairs.
◆The rated current of the intelligent controller is Ie: 0.4/1/2.5/4/6.3/12/16/18/25/32/40/45/50/63/80/100/125A.
◆Main rated current ln: 12/16/18/32/45/63/100/125A.
◆Number of poles: represented by two digits (the first digit represents the number of poles of the product, and the last digit represents the number of poles of protection), such as 33 for 3-pole with 3-pole protection, and 30 for table
3 poles without protection.
◆Control power supply voltage: M：AC220V、Q：AC380V。