mcb rating | Meba Electric Co., Ltd

Specification

Meba mcb rating MB626C adopts advanced design technology, it has protective function as shortage as overload, and are used in lighting distribution system industry, commerce and dwelling, and protecting fractional electric motors, and Meba mcb rating MB626C also have many merits of high protective grade(up to IP20), high breaking capacity, reliable sensitive action, convenient, multiple assembling, long life etc. They are mainly adapted to the circuit of AC 50Hz, 230V in single pole; 400V in double, three, four poles for protecting overload and short circuit, meanwhile Meba mcb rating MB626C are also used in turning on or off the electric apparatus and lighting circuit under the normal condition.

Parameter

Meba mcb rating MB626C

Technical parameters:

Against overload and short circuit in commercial, household and electric equipment installation. The product is suitable for non-frequently making and breaking operation.

Basic specification and main parameters

Frame class	63A
Rated working voltage	240V/415V
Rated frequency	50/60Hz
Rated working current	1,3,6,10,16,20,25,32,40,50,63A
Making and breaking capacity	6000A(6~40A),4500A(50,63A)
Release type	B,C,D
Poles	1,2,3,4P
Mechanical life	20000
Electric life	4000

The over-current tripping unit protection feature

Sequence NO .	Release	Test current I/In	Start state	Tripping time	Expected results
1	B,C,D	1.13In	Cold state	t≤1h	Not tripping
2	B,C,D	1.45In	Start right after the serial NO . 1 test	t<1h	Tripping
3	B,C,D	2.55In	Cold state	1s	Tripping
4	B C D	3In 5In 10In	Cold state	t≤0.1s	Not tripping
5	B C D	5In 10In 20In	Cold state	t<0.1s	Tripping

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Specification

Meba mcb rating MB50 major export to South America, Middle East market, has light weight, small size, novel structure and excellent performance. They are mounted in the metal distribution board and used in guesthouses. block of fiats, high buildings, squares, airports, railway stations, plants and enterprises etc, in AC circuits 240V(single pole)up to 415V(3poie)50Hz for protection of overload short circuit and for circuit changeover in lighting system. Breaking capacity is 3KA. The items comply with BS&NEMA STANDARD.

Feature:

MAGNETIC COIL: ensures the switching of short-circuit, speaking within the following ranges: 5 to 10 times rated current (Type C), 3 to 5 times rated current ( Type B ), 10 to 20 times rated current ( Type D )

BIMETAL: ensures the breaker trip when overloaded.

ARC CHAMBER: effectively dissipates the electric arc that is generated by the opening contacts of the trigger mechanism in the presence of an overload or short circuit.

Parameter

Meba mcb rating MB50

Technical parameters

ropicalization	Relative Humidity	℃	93% RH at 25℃
ropicalization	Room Temperature	℃	10℃ a 60℃
Electrical Properties	Rated at 40℃	A	6/10/15/20/30/40/50/63
	Rated operating voltage at 40℃	Vac	120/240/415
	Nominal Frequency	Hz	50/60
	Interrupting Capacity at 230V	kA	3
	Operating temperature	℃	-5℃ a +40℃
	Degree of Protection		IP20
	Number of poles		1,2,3,4
	Conductor cross section (minimum allowable)	mm²	25
	Minimum number of power moves		4000
	Minimum number of mechanical operations		6000
	Operation curve		B/C/D
	Current Trip Curve	A	Type B 3a 5 In Type C 5 a 10 In Type D 10 a 14 In
	Characteristic Intervention		attach
Type Of Assembly	NEMA Type
Features	MAGNETIC COIL: ensures the switching of short-circuit, speaking within the following ranges: 5 to 10 times rated current (Type C), 10 to 14 times rated current ( Type D )
	BIMETAL: ensures the breaker trip when overloaded.
	ARC CHAMBER: effectively dissipates the electric arc that is generated by the opening contacts of the trigger mechanism in the presence of an overload or short circuit.