CRM1E Moulded Case Circuit Breaker series(MCCB)

The CRM1E series electronic plastic shell circuit breaker (hereinafter referred to as the circuit breaker) is suitable for AC 50Hz (or 60Hz), with a rated insulation voltage of 1000V, a rated working voltage of 400V and below, and a rated working current of 800A. It is used for infrequent switching and infrequent motor starting in circuits. The circuit breaker has overload long delay inverse time limit, short circuit short delay inverse time limit, short circuit short delay definite time limit, short circuit instantaneous and secondary voltage protection functions, as well as residual current protection (optional) and phase loss protection function (optional), which can protect the circuit and power equipment from damage. The circuit breaker has complete and accurate protection characteristics, can improve power supply reliability, and avoid unnecessary power outages. The "Z, B" type control has a communication interface and can perform "three remote" to meet the requirements of the control center and automation system.

Circuit breakers are classified into M-type (higher breaking type) and H-type (high breaking type) according to their rated ultimate short-circuit breaking capacity.

This circuit breaker has the characteristics of small size, high breaking capacity, short arcing, and anti vibration.

The circuit breaker has an isolation function, and its corresponding symbol is: "-/x~,

Compliant with standards: IEC60947-2, GB/T14048.2, and Appendix F "Additional Tests for Circuit Breakers with Electronic Overcurrent Protection"

Circuit breakers allow for reverse entry of wires.

Intelligent controller is the core component of molded case circuit breakers, applied to motor protection or distribution protection, realizing measurement, protection, control and communication functions in one, so as to protect the circuit and power equipment from overload, short circuit, grounding and other fault hazards.

Controlled by MCU microprocessor, the performance is stable and reliable: This intelligent controller can supply power by itself. As long as it is powered on, when the current is not less than 20% of its rated value, it can ensure the normal operation of the protection function.

Selective cooperation has three stages of protection: the use of Class B circuit breakers and other short-circuit protection devices connected in the same circuit have selective cooperation under short-circuit conditions; Setting of protection function parameters such as overload long delay inverse time limit, short circuit delay (inverse time limit, timed limit), and short circuit instantaneous.

It has three protection parameter settings for action current and action time, and can be adjusted in 4-10 levels: users can adjust the controller according to the load current requirements, or choose to turn off the corresponding function according to user requirements (customized function, to be specified by the user when ordering).

High current instantaneous tripping function: When the circuit breaker is closed or in operation, if a short circuit with a high current (20nm) is encountered, the magnetic tripping mechanism of the circuit breaker can be directly tripped, providing more reliable and safe dual protection.

Equipped with trip testing function: Input DC 12V voltage to test the operating characteristics of the circuit breaker.

Fault self diagnosis function: protect and detect the working status and operation of the intelligent controller itself.

Equipped with pre alarm indication and overload indication: When the load current reaches or exceeds the set value, the corresponding light guide column is used to export the light source.

Magnetic flux converter dual air gap technology: more reliable and stable operation, eliminating misoperation, reliable tripping, and low power.

High protection accuracy: The action time accuracy of overload protection and short circuit short delay protection is ± 10%; The accuracy of the instantaneous short-circuit protection action value is ± 15% depending on the action current.

Installation has interchangeability: Dimensions 、 The installation dimensions are the same as those of the CRM1 series molded case circuit breaker.