The product adopts a modular single product structure and integrates the main functions of traditional circuit breakers (fuses), contactors, overload (or overcurrent phase failure) protection relays, starters, isolators, etc. It has remote automatic control and local direct human control. Functions: It has panel indication and electromechanical signal alarm functions. It has overvoltage and undervoltage protection functions. It has phase failure and phase loss protection functions. It has coordinated time current protection characteristics (with inverse time limited time limit and instantaneous three-stage protection characteristics). By selecting functional modules or accessories as needed, you can control and protect various types of motor load distribution loads. It is mainly used in power systems with AC rated voltage to rated current and adjustable operating current to connect and break current under normal conditions (including specified overload conditions) and can connect and disconnect specified abnormal conditions ( such as short circuit).
In terms of its structure and function, the series of products is no longer a single product such as a contactor, circuit breaker or thermal relay, but a set of control and protection systems. Its emergence fundamentally solves the various problems of unreasonable control and protection coordination caused by the unreasonable selection of traditional discrete components (usually circuit breakers or fuses, contactors, overload relays). In particular, it overcomes the problems caused by the use of different The phenomenon of incoordination between protection characteristics and control characteristics when the assessment standard electrical products are combined together greatly improves the operational reliability and continuous operation performance of the control and protection system.
The series of products are the best substitutes for low-voltage electrical appliances such as circuit breakers (such as) contactors, thermal relays, fuses, etc. They are upgraded products of the series.
Three product functions
◇Extra large short-circuit instantaneous protection. The protection current is related to the rated current of the switch body, and its setting current is the action time.
◇The protection current of short-circuit instantaneous protection is related to the rated operating current of the electronic release, and its setting current is the action time.
◇The protection current of short-circuit short-delay or fixed-time protection is related to the rated operating current of the electronic release. Its setting current is adjustable on the panel () (motor protection) () (distribution protection) delay action setting time< br/>◇Overload long-delay protection protection current is related to the rated operating current of the electronic release. Its setting current panel has adjustable inverse time characteristics and is used for long-delay current setting time for power distribution motors
◇Lack of phase The action setting time of phase failure protection is
◇The action setting time of three-phase unbalance protection when the current difference between any two phases exceeds is
◇The three-phase action setting time of overvoltage protection
◇Three-phase undervoltage protection Action setting time
◇Start delay, short circuit, short delay or fixed time limit without protection. The setting time is
◇Fire protection interface DC fire protection interface output (optional)
◇Leakage protection residual current according to customer requirements Customized action time (delay type is (optional)
◇Pre-alarm function and current adjustable
◇Online programming function
◇Fault indication
◇Test function
GJKBO-45C/M45/06MFG Guojia