Year1
- 产品名称：
- 铁壳开关、负荷开关
- 型号：
- HH11-300/3
- 电流规格：
- 300A三相
Series iron case switch
/ Iron case load switch
/ Fuse type load switch, suitable for AC
, rated insulation voltage to
, rated operating voltage
/>, which is used to manually connect and disconnect load circuits and circuits infrequently for overload and short-circuit protection in circuits with heating currents up to
amperes. Because it is equipped with a neutral terminal, the switch can also be used as a control switch for general lighting and other circuits.
Series iron case switch
/ Iron case load switch
/ Fuse type load switch is suitable for the following working conditions
The altitude is not higher than
meters
around The ambient temperature is not higher than
degrees Celsius and not lower than
degrees Celsius
The relative air humidity is not greater than
℃
Install vertically in places without strong vibration and impact
In situations where there are no explosive gases or corrosive gases
Series iron case switches
/ Iron case load switches
/ Classification and types of fuse type load switches
Divided according to the agreed heating current< br/>Four levels of ampere
According to the structure type, there are two types: open type and closed type
According to the number of poles, there are
poles with neutral terminals and
poles without Neutral terminal,
Three poles
Series iron case switch
/ Iron case load switch
/ Structural features of fuse type load switch
Main features of iron case switch It consists of four parts: contact arc extinguishing system, fuse, operating mechanism and shell. The arc extinguishing chamber is made of arc-resistant plastic and has a simple mechanism that is easy to disassemble and assemble. The contact system adopts a double-breakpoint direct-acting long contact type. The moving contact is a double-breakpoint contact with a stuffed sealed tubular fuse as the bridge arm. The long contact has a higher Excellent electric stability, double breakpoints have high breaking capacity. The ultimate breaking capacity of the stuffed sealed tube fuse reaches 1,000 amps, which can meet the requirements of general power grids. The operating mechanism adopts a single-rod pull-out structure and spring energy storage principle. The same spring is used to perform the on and off functions of the switch, ensuring that the switch can be reliably connected and disconnected, and has an obvious on and off mark. The pull-out operating handle can be pushed into the switch housing after the switch is turned on or off. It has a beautiful appearance. The switch cover is equipped with an interlocking device to ensure that the switch cannot be turned on after the cover is opened and the cover cannot be opened after the switch is turned on.
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