Home Categories Send inquiry

YCB8-63PV Photovoltaic DC MCB

Features

● Modular design, small size; ● Standard Din rail installation, convenient installation; ● Overload, short circuit, isolation protection function, comprehensive protection; ● Current up to 63A, 14 options; ● The breaking capacity reaches 6KA, with strong protection capacity; ● Complete accessories and strong expansibility; ● Multiple wiring methods to meet various wiring needs of customers; ● The electrical life reaches 10000 times, which is suitable for the 25-year life cycle of photovoltaic.

Selection

YCB8 - 63 PV 4P C 20 DC250 + YCB8-63 OF
Model Shell grade current Usage Number of poles Tripping Rated  current Rated  voltage Accessories
characteristics YCB8-63 OF: Auxiliary
Miniature circuit breaker 63 PV: heteropolarity Pvn: nonpolarity 1P B C K 1A, 2A,    3A....63A DC250V YCB8-63 SD: Alarm
2P DC500V YCB8-63 MX: Shunt release
3P DC750V
4P DC1000V
Note: The rated voltage is affected by the number of poles and wiring mode. The single poleis DC250V, the two poles in series are DC500V, and so on.

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) Pv:6 PVn:
Operation breaking capacity Ics(KA) Ics=100%Icu
Curve type Type B, Type C, Type K
Tripping type Thermomagnetic
Service life (time) Mechanical 20000
Electrical PV:1500 PVn:300
Polarity Heteropolarity
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

Grounding and fault effect

Grounding type Single-stage grounding system Ungrounded system
Circuit diagram    
Fault effect Fault A Maximum short-circuit current ISC Fault A No effect
Fault B Maximum short-circuit current ISC Fault B Maximum short-circuit current ISC
Fault C No effect Fault C No effect

Wiring diagram

Overall and mounting dimensions(mm)

Curve

Temperature correction factor table

Current correction value used in different environments
                                                 Environmental temperature (℃) -35 -30 -20 -10 0 10 20 30 40 50 60 70
                  Current correction value (A)
Rated current(A)
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, 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

YCB8-63PV Photovoltaic DC MCB Related Video: