CNC 4 Pole MCB DC Circuit Breakers 1000V YCB8-63PV

Key Features

The CNC 4 Pole MCB DC Circuit Breakers YCB8-63PV are designed for reliable protection and high performance in DC systems.

1. High Voltage & Current Capacity

○      Rated operating voltage up to DC1000V and current up to 63A.

○      Provides overload, short circuit, and isolation protection.

○      Suitable for photovoltaic, industrial, civil, and communication systems.

2. Compact and Modular Design

○      Space-saving modular design.

○      Standard DIN rail installation for quick and easy setup.

○      Flexible wiring options to accommodate diverse installation needs.

3. Advanced Protection Capabilities

○      Breaking capacity of 6KA for robust system safety.

○      Supports electrical life up to 10,000 cycles, ensuring long-term durability.

○      Designed to meet the 25-year lifecycle of photovoltaic systems.

4. Expandable Functionality

○      Compatible with auxiliary contacts, alarm contacts, and shunt releases.

○      Multiple inline methods enhance versatility.

○      Comprehensive accessories for a wide range of applications.

Dc Breaker Specifications

●      Standards: IEC/EN 60947-2, EU ROHS environmental protection

●      Number of Poles: 1P, 2P, 3P, 4P

●      Rated Voltage: Up to DC1000V (depends on pole configuration)

●      Rated Current: 1A–63A (14 options)

●      Breaking Capacity: 6KA

●      Service Life:

○      Mechanical: 20,000 cycles

○      Electrical: PV – 10,000 cycles, PVn – 300 cycles

●      Protection Degree: IP20

●      Operating Temperature: -35°C to +70°C

●      Storage Temperature: -40°C to +85°C

●      Wiring Capacity: 2.5–25 mm²

●      Terminal Torque: 3.5 N·m

General

The CNC DC 4 Pole MCB Circuit Breaker YCB8-63PV offers exceptional reliability and safety for DC systems, including photovoltaic, industrial, and communication setups. Its modular design, robust protection, and flexible installation options make it a versatile solution.

●      Meets IEC/EN 60947-2 standards.

●      Suitable for environments with temperatures ranging from -35°C to +70°C.

●      Ideal for installations requiring high reliability and efficiency.

Selection

Technical data

Standards		IEC/EN 60947-2
Number of poles		1P	2P	3P	4P
Rated current of shell frame grade		63
Electrical performance
Rated working voltage Ue(V DC)		250	500	750	1000
Rated current In(A)		1、2、3、4、6、10、16、20、25、32、40、50、63
Rated insulation voltage Ui(V DC)		1200
Rated impulse voltage Uimp(KV)		4
Ultimate breaking capacity Icu(KA)(T=4ms)		6
Operation breaking capacity Ics(KA)		Ics=100%Icu
Curve type		B, C, K
Tripping type		Thermomagnetic
Service life (time)	Mechanica	20000
	Electrical	PV：1500 PVn：300
Inline methods		Can be up and down into the line
Electrical accessories
Auxiliary contact		□
Alarm contact		□
Shunt release		□
Applicable environmental conditions and installation
Working temperature(℃)		-35~+70
Storage temperature(℃)		-40~+85
Moisture resistance		Category 2
Altitude(m)		Use with derating above 2000m
Pollution degree		Level 3
Protection degree		IP20
Installation environment		Places without significant vibration and impact
Installation category		Category II 、Category III
Installation method		DIN35 standard rail
Wiring capacity		2.5-25mm²
Terminal torque		3.5N·m

 

■ Standard   □ Optional   ─ No

Wiring diagram

Note:
L+power supply positive pole     ⊕Positve pole of circuit breaker
L-power cathode                            ⊖Negative pole of circuit breaker
Please place a note for other wiring methods while placing an order.

Overall and mounting dimensions(mm)

Curve

Temperature correction factor table

Current correction value used in different environments

Rated current(A)Current correction value(A)Environmental temperature(℃)	-35	-30	-20	-10	0	10	20	30	40	50	60	70
1	1.3	1.26	1.23	1.19	1.15	1.11	1.05	1	0.96	0.93	0.88	0.83
2	2.6	2.52	2.46	2.38	2.28	2.2	2.08	2	1.92	1.86	1.76	1.66
3	3.9	3.78	3.69	3.57	3.42	3.3	3.12	3	2.88	2.79	2.64	2.49
4	5.2	5.04	4.92	4.76	4.56	4.4	4.16	4	3.84	3.76	3.52	3.32
6	7.8	7.56	7.38	7.14	6.84	6.6	6.24	6	5.76	5.64	5.28	4.98
10	13.2	12.7	12.5	12	11.5	11.1	10.6	10	9.6	9.3	8.9	8.4
13	17.16	16.51	16.25	15.6	14.95	14.43	13.78	13	12.48	12.09	11.57	10.92
16	21.12	20.48	20	19.2	18.4	17.76	16.96	16	15.36	14.88	14.24	13.44
20	26.4	25.6	25	24	23	22.2	21.2	20	19.2	18.6	17.8	16.8
25	33	32	31.25	30	28.75	27.75	26.5	25	24	23.25	22.25	21
32	42.56	41.28	40	38.72	37.12	35.52	33.93	32	30.72	29.76	28.16	26.88
40	53.2	51.2	50	48	46.4	44.8	42.4	40	38.4	37.2	35.6	33.6
50	67	65.5	63	60.5	58	56	53	50	48	46.5	44	41.5
63	83.79	81.9	80.01	76.86	73.71	70.56	66.78	63	60.48	58.9	55.44	52.29

 

Use of derating table at high altitude

Tripping type	Rated current(A)	Current correction factor			Example
		≤2000m	2000-3000m	≥3000m
B、C、K	1, 2, 3, 4, 6,10, 13, 16, 20, 25,32, 40, 50, 63	1	0.9	0.8	The rated current of 10A products is 0.9× 10=9A after derating at 2500m

Recommended wiring size

Wiring capacity

Rated current In(A)	Nominal cross-sectional area of copper conductor(mm²)
1~6	1
10	1.5
13、16、20	2.5
25	4
32	6
40、50	10
63	16

Power consumption per pole of circuit breaker

Rated current In(A)	Maximum power consumption per stage(W)
1~10	2
13~32	3.5
40~63	5

Accessories

The following accessories are suitable for YCB8-63PV series DC Breaker, which can provide the functions of remote control of circuit breaker, automatic disconnection of fault circuit, status indication (breaking/closing/fault tripping).

a. The total width of the accessories assembled is within 54mm, the order and quantity from left to right: Of, SD(3max) + MX,MX+OF+MCB, SD can only assemble up to 2 pieces;
b.Assembled with the body, no tools required;
c.Before installation, check whether the technical parameters of the product meet the requirements of use, and operate the handle to open and close several times to check whether the mechanism is reliable.

 

Miniature circuit breaker accessories

●Auxiliary contact OF
Remote indication of closing/opening status of circuit breaker.
●Alarm contact SD
When the circuit breaker fault trips, it sends out a signal, together with a red indicator on the front of the device.
●Shunt release MX
When the power supply voltage is 70%~110%Ue, the remote control circuit breaker trips after receiving the signal.
●Minimum making and breaking current: 5mA(DC24V)
●Service life:6000 times (operating frequency: 1s)

Technical data

Model	YCB8-63 OF	YCB8-63 SD	YCB8-63 MX
Appearance
Types
Number of contacts	1NO+1NC	1NO+1NC	/
Control voltage (V AC)			110-415 48 12-24
Control voltage(V DC)			110-415 48 12-24
Working current of contact	AC-12 Ue/Ie: AC415/3A DC-12 Ue/Ie: DC125/2A		/
Shunt control voltage			Ue/Ie: AC:220-415/ 0.5A AC/DC:24-48/3
Width(mm)	9	9	18
Applicable Environmental Conditions and Installation
Storage temperature(℃)	40℃~+70℃
Storage humidity	the relative humidity does not exceed 95% when at +25℃
Protection degree	Level 2
Protection degree	IP20
Installation environment	Places without significant vibration and impact
Installation category	Category II 、Category III
Installation method	TH35-7.5/DIN35 rail installation
Maximum wiring capacity	2.5mm²
Terminal torque	1N·m

Overall and mounting dimensions(mm)
OF/SD Outline and installation dimensions

MX+OF Outline and installation dimensions

Brand

CNC