mcb rccb | Meba Electric Co., Ltd

Meba mcb rccb MB1-63-50A

Specification

Meba mcb rccb MB1-63-50A , this series Miniature Circuit Breaker is nice in appearance, reasonable in structure, sound in feature and high in breaking capacity. Installed with standard din rail, it is convenient and easy in usage. It is mainly used in the line of AC 50/60Hz, rated working voltage to 240V/415V, and rated current to 63A as protection against overload and short-circuit. It can be used as infrequent on-and-off operation and changeover.
It complies with standard of GB10963 and IEC/EN60898.

Parameter

Meba mcb rccb MB1-63-50A

Technical 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 result
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＜t＜60s	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

Dimensions(mm)

Meba-mcb-and-mccb-MB1-63-40A

Characteristics curve

Meba mcb and mccb MB1-63-40A Characteristics curve

Gallery

PDF Download

Specification

Meba mcb rccb GN type 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 rccb GN type

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.