HFWF3063l  | C 塑壳断路器  |  Eaton

型号：HFWF3063l

类别：C 塑壳断路器

成色：全新，非全新

质保：一年

HFWF3063l 断路器是指能够关合、承载和开断正常回路条件下的电流，并能在规定的时间内关合、承载和开断异常回路条件下的电流的开关装置。其功能主要包括：

切断和接通负荷电路。

切断故障电路，防止事故扩大，保证安全运行。

分配电能，不频繁地启动异步电动机。

对电源线路及电动机等实行保护，当它们发生严重的过载、短路及欠压等故障时能自动切断电路。

工作原理

HFWF3063l 断路器一般由触头系统、灭弧系统、操作机构、脱扣器、外壳等构成。其工作原理大致如下：

当短路时，大电流产生的磁场克服反力弹簧，脱扣器拉动操作机构动作，开关瞬时跳闸。

当过载时，电流变大，发热量加剧，双金属片变形到一定程度推动机构动作（电流越大，动作时间越短）。

HFWF3063l有电子型的断路器，使用互感器采集各相电流大小，与设定值比较，当电流异常时微处理器发出信号，使电子脱扣器带动操作机构动作。

四、主要特性

断路器的特性主要包括：

额定电压（Ue）：断路器正常工作的电压。

额定电流（In）：断路器在制造厂家规定的环境温度下所能无限承受的最大电流值。

过载保护（Ir或Irth）和短路保护（Im）的脱扣电流整定范围。

Model: HFWF3063l

Category: C Plastic-case circuit breaker

Finish: New, not new

Warranty: One year

HFWF3063l circuit breaker refers to a switching device that can turn off, carry and break the current under normal circuit conditions, and can turn off, carry and break the current under abnormal circuit conditions within a specified time. Its functions mainly include:

Cut off and switch on the load circuit.

Cut off the faulty circuit to prevent the expansion of the accident and ensure safe operation.

Distribute power and start asynchronous motors infrequently.

To protect the power line and motor, when they occur serious overload, short circuit and undervoltage failure can automatically cut off the circuit.

Working principle

HFWF3063l circuit breaker is generally composed of contact system, arc extinguishing system, operating mechanism, release device, housing and so on. Its working principle is roughly as follows:

When the short circuit, the magnetic field generated by the large current overcomes the reaction spring, the release device pulls the operating mechanism to act, and the switch is tripped instantaneously.

When overloaded, the current becomes larger, the heat is intensified, and the bimetal sheet is deformed to a certain extent to promote the mechanism action (the greater the current, the shorter the action time).

HFWF3063l has an electronic circuit breaker, the use of transformer to collect the current of each phase, compared with the set value, when the current is abnormal, the microprocessor sends a signal, so that the electronic trip drive the operating mechanism action.

Four, the main characteristics

The characteristics of the circuit breaker mainly include:

Rated voltage (Ue) : Voltage at which the circuit breaker works normally.

Rated current (In) : The maximum current value that the circuit breaker can withstand indefinitely at the ambient temperature specified by the manufacturer.

Trip current setting range for overload protection (Ir or Irth) and short circuit protection (Im).