SJKW15 Universal Circuit Breaker

Scope of application
The SJKW15 universal circuit breaker (hereinafter referred to as the circuit breaker) is suitable for use in distribution networks with AC 50Hz, rated working current up to 6300A, rated working voltage AC 380V, AC 1140V. It is used for distributing electrical energy and providing overload, undervoltage, and short-circuit protection for power supply lines and equipment. Circuit breakers can be used for infrequent switching of power lines under normal conditions, and can also be used for infrequent starting of electric motors under normal conditions. Circuit breakers with a rated current of 630A and a frame rating also have drawer type
Compliant with standards: GB14048.2, IEC60947-2
Normal working conditions and installation conditions
The ambient air temperature is -5 ° C~+40 ° C, and the average value over 24 hours does not exceed+35C
The altitude of the installation location shall not exceed 2000m
The relative humidity of the atmosphere should not exceed 50% when the ambient air temperature is+40 ℃; At lower temperatures, there can be higher relative humidity; The average maximum humidity in the wettest month is 90%. At the same time, the average minimum temperature for the month is+25 ℃, taking into account the condensation that occurs on the surface of the product due to temperature changes
◇ Pollution level is level three
◆ Rated working voltage 1140V circuit breaker installation category III. The installation category of circuit breakers with a rated working voltage of 400V (380V) and below is IV, and the installation category of auxiliary circuits is II, except for the undervoltage instantaneous release coil and the primary coil of the power transformer used for undervoltage delay, which are the same as the circuit breaker
The vertical inclination of the circuit breaker installation shall not exceed 5 °


Other
◆ Structural Features
SJKW15-630 Universal Circuit Breaker:
The circuit breaker is arranged in a three-dimensional form, with the contact system and left and right side plates installed on an insulating board. The upper part is equipped with an arc extinguishing system, and the operating mechanism can be installed in the front or on the right side. There are "open" and "close" indicators and a manual disconnect button. The upper left corner is equipped with a shunt release, and the lower inner end is equipped with an undervoltage release connected to the release half shaft. Undervoltage delay devices or thermal relays are installed below
SJKW15-1600, 2500, 6300 Universal Circuit Breaker:
The circuit breaker is arranged in a three-dimensional form, with the contact system and operating mechanism installed on an iron frame. The upper part is equipped with an arc extinguishing system, and the right side is equipped with an operating mechanism. There are "open" and "close" indicators and manual "close" and "open" buttons. The left side is equipped with a shunt release and an undervoltage release. Undervoltage delay devices or thermal relays are installed below
SJKW15C drawer type circuit breaker:
This product consists of a circuit breaker body and a drawer seat. The circuit breaker body is equipped with isolation contact blades, secondary circuit moving contact system support rails, etc. The drawer holder consists of left and right side plates, aluminum brackets, isolation contact holder, secondary circuit static contact system, slide frame, etc. Directly below, there is a push-pull operating mechanism composed of an operating handle, screw, and other components
Main circuit wiring method:
◇ Rear entry and exit lines (horizontal entry and exit lines), drawer type circuit breakers are commonly used for rear entry and exit lines
◇ Board forward outgoing line (vertical incoming and outgoing line), ordinary circuit breakers are usually board forward outgoing lines
◇ Forward line and rear line of the board. (Drawer style without)
◇ Front board outgoing line and rear board incoming line. (Drawer style without)