Mini Circuit Breaker

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Application Range

FCM7(DPN)-32 series miniature circuit breaker is used for single phase circuits with AC 50/60Hz and rated voltage up to 230V AC. It’s applied to protect overload and short circuit of electric circuit, and also widely used as branch switch for family, hotel, apartment, hospital and industrial enterprise. The ideal product for residential field as protection switches for power distribution.

Structure Feature

FCM7(DPN)-32 series miniature circuit breaker has some advantages like: high breaking capacity, small size, compact structure, two poles (P + N) with 18mm width of two moulds, cutting off phase line and N line at the same time. And N pole has feature of first switching on then breaking that can avoid prison risk caused by incorrect connection of phase line and N line or voltage to ground of N line.

Technical Data

Type	Rated current of frame: Inm (A)	Rated current: In(A)	Pole No.	Rated Voltage: Ue(v)	Rated short circuit breaking capacity: Icu(A)
FCM7-32	32	6,10,16,20,25,32	1P+N	230	4500

Time-Current Operation Characteristics

Test Grade	Type	Test Current	Start State	Release or unreleased time limit	Expected Result
a	B, C,	1.13In	Cooling	t≥1h	Unreleased
b		1.45In	Following a item	t<1h	Release
c		2.55 In	Cooling	1s<t<60s	Release
d	B	3 In	Cooling	t≥1s	Unreleased
	C	5 In
	D	10 In
e	B	5 In	Cooling	t<1s	Release

Q:Why the first break circuit breaker, after the isolation switch off it?: when the circuit breaker is broken, the circuit has no current, pull the switch will not produce arc, There will be an accident.

Q:Short trip also tripped, overload also trip it?: who works in a simple sentence, will produce heat when any electrical work and power are proportional to the heat for the degree.

Q:What type of switch circuit breaker has undervoltage protection: For example: Model DZ10-100 / 330 circuit breaker with over voltage, undervoltage protection function, from its model in the symbol / behind the second 3

Q:What is the length of time that the circuit breaker can delay?: that is to say the greater the overload the greater the tripping time, overload current tripping time is long

Q:Circuit breaker main circuit control power, how to wiring?: Otherwise you should use a larger capacity circuit breaker or technical transformation, reduce the installation of short-circuit capacity. Or on the circuit breaker capacity transformation

Q:he circuit breaker in the circuit mainly plays a protective element what protects the two functions of the element: When the circuit is short-circuited or the current is large, the current coil quickly pulls the armature Drive trip mechanism trip.

Q:Is the circuit breaker in the circuit necessary?: when the current is slightly larger, will only cut off the other two phase to produce too much electric current Arched open

Q:Circuit system diagram how the circuit breaker said: so as to avoid serious equipment and personal accidents. Only the voltage transformer, arrester, the excitation current does not exceed 2A no-load transformer

Q:Leakage protector and open selection: The third is not overloaded. Short-circuit protection function. Not directly split circuit, only leakage alarm RCD

Q:Home circuit breakers and how much air is open: here are numerous power distribution programs, the following five commonly used configuration features, installation considerations for customer reference.

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