YCB6 Miniature Circuit Breaker(MCB)

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YCB6 Miniature Circuit Breaker(MCB)

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YCB6 Miniature Circuit Breaker(MCB)

YCB6-63 miniature circuit breaker(circuit breaker) is applicable to the circuit with AC50Hz/60Hz, rated voltage of no more than 400V， rated current up to 63 A for overload protection and short circuit protection. This product can be applied to various places such as industrial, commercial, tall buildings,and residential houses.

Standard: IEC60898-1

Product Details

Type designation

Technical data

Type	Standard		IEC/EN 60898-1
Electrical features	Rated current In	A	1,2,3,4,6,10,16,20,25,32,40,50,63
	Poles	P	1,2,3,4
	Rated voltage Ue	V	230/400
	Insulation voltage Ui	V	500
	Rated frequency	Hz	50/60
	Rated breaking capacity	A	30,004,500
	Rated impulse withstand voltage(1.2/50)Uimp	V	4000
	Dielectric test voltage at ind.Freq.for 1min	kV	2
	Pollution degree		2
	Thermo-magnetic release characteristic		B,C,D
Mechanical features	Electrical life	t	6000
	Mechanical life	t	20000
	Protection degree		IP20
	Reference temperature for setting of therma element	℃	30
	Ambient temperature (with daily average≤35℃)	℃	-5~+40
	Storage temperature	℃	-25~+70
Installation	Terminal connection type		Cable/Pin-type busbar
	Terminal size top/bottom for cable	mm²	25
	Terminal size top/bottom for cable	AWG	18-3
	Terminal size top/bottom for busbar	mm²	25
	Terminal size top/bottom for busbar	AWG	18-3
	Tightening torque	N*m	2
	Tightening torque	In-lbs	18
	Mounting		On DIN rail EN 60715(35mm)by means of fast clip device
	Connection		From top or bottom

Selection

B,C,D	1.13ln	t≤1h(In≤63A)	Not tripping	B	3In	t≤0.1s	Not tripping
B,C,D	1.13ln	t≤2h(In>63A)	Not tripping	C	5In	t≤0.1s
B,C,D	1.45In	t<1h(In≤63A)	Tripping	D	10ln	t≤0.1s
B,C,D	1.45ln	t<2h(In>63A)	Tripping	B	5In	t<0.1s	Tripping
B,C,D	2.55ln	1s<t<60s(In≤32A)	Tripping	C	10ln	t<0.1s
B,C,D	2.55In	1s<t<120s(In>32A)	Tripping	D	20ln	t<0.1s

Curve

Temperature drop correction table

The maximum allowable current of the circuit breaker is related to the ambient temperature of the circuit breaker. The ambient temperature refers to the temperature in the distribution box or switch cabinet where the circuit breaker is installed. The reference temperature of various circuit breakers can be found in the values of the colored rows in the table.

Product standard: GB/T10963.1 IEC60898-1 (household standard)

temperature(℃)	-5	0	5	10	15	20	25	30	35	40	45
Rated current
1A	1.16	1.14	1.11	1.09	1.07	1.05	1.02	1.00	0.98	0.95	0.92
2A	2.30	2.26	2.22	2.18	2.13	2.08	2.04	2.00	1.96	1.92	1.88
4A	4.72	4.63	4.53	4.43	4.32	4.22	4.11	4.00	3.89	3.77	3.65
6A	6.97	6.84	6.71	6.57	6.43	6.29	6.15	6.00	5.85	5.69	5.53
10A	12.25	11.95	11.65	11.34	11.02	10.69	10.35	10.00	9.64	9.26	8.86
16A	18.72	18.35	17.98	17.60	17.22	16.82	16.42	16.00	15.57	15.13	14.68
20A	23.24	22.80	22.36	21.91	21.45	20.98	20.49	20.00	19.49	18.97	18.44
25A	29.12	28.57	28.01	27.43	26.85	26.24	25.63	25.00	24.35	23.69	23.01
32A	37.18	36.49	35.78	35.05	34.32	33.56	32.79	32.00	31.19	30.36	29.50
40A	46.66	45.77	44.86	43.93	42.98	42.01	41.02	40.00	38.96	37.88	36.78
50A	58.57	57.43	56.26	55.06	53.84	52.59	51.31	50.00	48.65	47.27	45.84
63A	74.73	73.17	71.57	69.94	68.27	66.56	64.81	63.00	61.14	59.22	57.24

Overall and mounting dimensions(mm)

General

This series circuit breaker accessories are used in household, building and other electrical circuits with YCB6-63 circuit breaker cooperated for

remote control and diferent accessories selected for different needs, featured with auxiliary signal, opening and closing status indication, and

even alarm signal function for better protection on the circuit, personal and property safety.

Type designation

Function

Accessory name	Code	Function
Auxiliary contact	OF	Provide auxiliary signal and control auxiliary circuit
Alarm contact	SD	When the circuit breaker is due to a fault,the alarm signal would work and indicate.
Shunt release	MX	Over the range of 70%～110%of the rated control supply voltage,the release should trip the circuit breaker to protect the circuit.
Shunt release+ Auxiliary contact	MX+OF	Remote control of circuit and control the auxiliary circuit by auxiliary contact.
Over-voltage and under-voltage release	MV+MN	When the rated voltage 230V increase to 270V+/-5%or reduce to 170V+/-5%, the circuit breaker should trip for over-voltage and under-voltage protection.

installation

Al the electrical accessories should be installed at the side of the circuit breaker,details are shown in the figure below.(Remark:eeach MCB can be installed with 3(MAX.)indicating accessories.)

Operating Conditions

● Ambient temperature:-5℃~+40℃;

● Altitude:Below 2000m;

● Environment:The medium should be no risk of blasting and can't corrode the metal and damage insulating gas as well as conductive dust;

● Installation:35mm standard din rail.

Technical data

Auxiliary contact and Alarm contact technical parameters

Accessory name	Rated current(A)			Number of contacts
Accessory name	AC 380V	AC 220V	AC 110V	Number of contacts
Auxiliary contact OF	3	6	1	1NO 1NC
Alarm contact SD	3	6	1	1NO 1NC

Shunt release,Shunt release+Auxiliary contact technical parameters

Accessory name	Rated insulation voltage Ui	Rated control voltage Us	Tripping power consumption (W or VA)	Operation voltage Us
Shunt release MX	415V	AC/DC:220~380V 110~220V	240	0.7~1.1
		AC/DC:24~48V	120