Features
● Ultra-wide breaking capacity:
rated working voltage up to DC1500V and rated current up to 800A. Under DC1500V working conditions, Icu =Ics=20KA, ensuring reliable short-circuit protection.
● Small size:
for frame currents up to 320A, the 2P rated working voltage can reach DC1000V, and for frame currents of 400A and above, the 2P rated working voltage can reach DC1500V.
● Ultra-long arc-extinguishing chamber:
the arc-extinguishing chamber has been improved as a whole, with more arc- extinguishing plates, greatly improving the product's breaking characteristics.
● Application of narrow-slot arc-extinguishing technology:
advanced current-limiting and narrow-slot arc-extinguishing technology is applied, which enables the high voltage and high short-circuit current to be cut off very quickly, facilitating the extinguishing of the arc in the shortest possible time, effectively limiting the energy and current peak, and greatly reducing damage to cables and equipment caused by short-circuit currents.
Selection
| YCM8 |
— |
250 |
S |
PV |
/ |
3 |
125A |
DC1500 |
| Model |
Shell frame current |
Breaking capacity |
Product type |
Number of poles |
Rated current |
Rated voltage |
| YCM8 |
125(50~125) 250(63~250) 320(250~320) 400(225~400) 630(400~630) 800(630~800) |
S: Standard breaking
N: Higher breaking |
PV:
Photovoltaic/ direct-current |
2
3 |
50, 63, 80, 100,
125, 140, 160,
180, 200, 225,
250, 280, 315,
320, 350, 400,
500, 630, 700, 800 |
DC500
DC1000
DC1500 |
Note: The tripping type of this product is thermal-magnetic type
The working voltage of YCM8-250/320PV 2P is DC1000V; The working voltage of 3P is DC1500V; YCM8-400/630/800PV 2P and 3P can work under DC1500.
Accessory selection
| YCM8 |
— |
MX |
1 |
AC230V |
| Model |
Accessories |
Adapter shell frame |
Accessory voltage |
| YCM8 |
OF: Auxiliary contact
MX: Shunt release
SD: Alarm module
Z: Manual operation mechanism
P: Electric operating mechanism
TS2: Terminal shield 2P
TS3: Terminal shield 3P |
0：125
1：250/320/
2：400/630/800 |
MX:
AC110V
AC230V
AC400V
DC24V
DC110V
DC220V |
P:
AC400V
AC230V
DC220V |
Technical data
| Model |
YCM8- 125PV |
YCM8- 250PV |
YCM8- 320PV |
| Appearance |
|
|
|
| Shell frame current Inm(A) |
125 |
250 |
320 |
| Number of poles of products |
2 |
2 |
3 |
2 |
3 |
| DC working voltage(V) |
250 |
500 |
500 |
1000 |
1500 |
500 |
1000 |
1500 |
| Rated insulation voltageUi(V) |
DC1000 |
DC1250 |
DC1500 |
DC1250 |
DC1500 |
| Rated impulse withstand voltage Uimp(KV) |
8 |
8 |
12 |
8 |
12 |
| Rated current In(A) |
50, 63, 80, 100, 125 |
63, 80, 100, 125,140, 160, 180,
200, 225, 250 |
280, 315, 320 |
| Ultimate short-circuit
breaking capacity Icu (kA) |
S |
40 |
40(5ms) |
50 |
20 |
20 |
50 |
20 |
20 |
| N |
/ |
/ |
/ |
| Running short-circuit breaking capacity Ics(kA) |
Ics=100%Icu |
| Wiring method |
Up in and down out, down in and up out, Down in and up out, up in and down out(3P) |
| Isolation function |
Yes |
| Tripping type |
Thermal-magnetic type |
| Electrical life(time) |
5000 |
3000 |
3000 |
2000 |
1500 |
3000 |
2000 |
1500 |
| Mechanical life(time) |
20000 |
20000 |
20000 |
| Standard |
IEC/EN60947-2 |
| Attached accessories |
Shunt、Alarm、Auxiliary、Manual operation、Electric operation |
| Certifications |
CE |
| Overalldimension (mm)
|
Width(W) |
64 |
76 |
107 |
76 |
107 |
| Height(H) |
150 |
180 |
180 |
| Depth(D) |
95 |
126 |
126 |
Note: ① 2P connection in series, ② 3P connection in series
Technical data
| Model |
YCM8- 400PV |
YCM8-630PV |
YCM8- 800PV |
| Appearance |
|
|
|
| Shell frame current Inm(A) |
400 |
630 |
800 |
| Number of poles of products |
2 |
3 |
2 |
3 |
2 |
3 |
| DC working voltage(V) |
500 |
1000 |
1500 |
1500 |
500 |
1000 |
1500 |
1500 |
500 |
1000 |
1500 |
1500 |
| Rated insulation voltageUi(V) |
DC1500 |
DC1500 |
DC1500 |
| Rated impulse withstand voltage Uimp(KV) |
12 |
12 |
12 |
| Rated current In(A) |
225, 250, 315,350, 400 |
400,500,630 |
630,700,800 |
| Ultimate short-circuit
breaking capacity Icu (kA) |
S |
65 |
35 |
15 |
15① 20② |
|
35 |
|
15① 20② |
65 |
35 |
15 |
15① 20② |
| N |
70 |
40 |
20 |
20① 25② |
|
|
|
20① 25② |
70 |
40 |
20 |
20① 25② |
|
Running short-circuit breaking capacity Ics(kA)
|
Ics=100%Icu |
| Wiring method |
Up in and down out, down in and up out, Down in and up out, up in and down out(3P) |
| Isolation function |
Yes |
| Tripping type |
Thermal-magnetic type |
| Electrical life(time) |
1000 |
1000 |
700 |
500 |
|
|
|
|
1000 |
1000 |
700 |
500 |
| Mechanical life(time) |
10000 |
|
10000 |
| Standard |
IEC/EN60947-2 |
| Attached accessories |
Shunt、Alarm、Auxiliary、Manual operation、Electric operation |
| Certifications |
CE |
| Overalldimension (mm) |
Width(W) |
124 |
182 |
124 |
182 |
124 |
182 |
| Height(H) |
250 |
250 |
250 |
| Depth(D) |
165 |
|
165 |
Note: ① 2P connection in series, ② 3P connection in series
Accessories
| Accessory code |
Accessory name |
125PV |
250/320PV |
400/630/800PV |
| SD |
Alarm contact |
|
|
|
| MX |
Shunt release |
|
|
|
| OF |
Auxiliary contact(1NO1NC) |
|
|
|
| OF+OF |
Auxiliary contact(2NO2NC) |
- |
- |
|
| MX+OF |
Shunt release+ Auxiliary contact(1NO1NC) |
|
|
|
| OF+OF |
2 sets of auxiliary contacts(2NO2NC) |
|
|
- |
| MX+SD |
Shunt release + Alarm contact |
- |
- |
|
| OF+SD |
Auxiliary contact + Alarm contact |
|
|
|
| MX+OF+SD |
Shunt release Auxiliary contact(1NO1NC)+ Alarm contact |
- |
- |
|
| OF+OF+SD |
2 sets of auxiliary contacts(2NO2NC)+Alarm contact |
|
|
|
Auxiliary contact
Auxiliary contact current parameters
| Rated current of shell frame grade |
Agreed heating current Ith |
The rated working current at AC 400V |
| Inm<320 |
3A |
0.30A |
| Inm>400 |
6A |
0.40A |
Auxiliary contact and its combination
| When the circuit breaker is in the "off" position |
|
|
| When the circuit breaker is in the "on" position |
|
|
Alarm contact
Alarm contact and its combination
| Alarm contact Ue=220V, Ith=3A |
|
| When the circuit breaker is in the "off"and "on"position |
|
| When the circuit breaker is in the "free trip" position |
|
Shunt release
Generally installed in the Phase A of the circuit breaker, when the rated control power voltage is between 70% - 110%, the shunt releaseshall make the circuit breaker trip reliably under all operating conditions.
Control voltage: conventional: AC 50Hz, 110V, 230V, 400V, DC 24V, 110V, 220V.
Note: when the power supply of the control circuit is DC24V, the following figure is recommended for the design of the shunt control circuit.
KA: DC24V intermediate relay, contact current capacity is 1A
K: the microswitch in series with the coil inside the release aid is a normally closed contact. When the circuit breaker is disconnected, the contact will automatically disconnect and close when it is closed.
Wiring diagram
Installation method and overall dimension of external accessories
Model and specification of rotating operating handle mechanism
| Model |
Installation dimension(mm) |
Central value of the operating handle relative to the circuit breaker(mm) |
| A |
B |
H |
D |
| YCM8-250/320PV |
157 |
35 |
55 |
50-150 |
0 |
| YCM8-400/630/800PV |
224 |
48 |
78 |
50-150 |
±5 |
Schematic diagram of hole opening of rotating operating handle
Overall and mounting dimension of external accessories
Model and specification of rotating operating handle mechanism
| Model |
H |
B |
B1 |
A |
A1 |
D |
| YCM8-250/320PV |
188.5 |
116 |
126 |
90 |
35 |
4.2 |
| YCM8-400/630/800PV |
244 |
176 |
194 |
130 |
48 |
6.5 |
Outline and installation dimension diagram of CD2
Wiring diagram
Wiring diagram
Overall and mounting dimensions(mm)
YCM8-125PV
YCM8-250PV、320PV
YCM8-400PV、630PV、800PV
Installation drawing of YCM8-PV with arcing cover
| Circuit breaker |
Arcing cover length A |
Total length B |
| YCM8-250/320PV |
64 |
245 |
| YCM8-400/630/800PV |
64 |
314 |
Safety distance when installing circuit breaker
| Model |
L |
A |
B |
C |
E |
| Without zero arcing cover |
With zero arcing cover |
Without zero arcing cover |
With zero arcing cover |
| YCM8-250PV |
40 |
50 |
65 |
25 |
25 |
50 |
130 |
| YCM8-320PV |
40 |
50 |
65 |
25 |
25 |
50 |
130 |
| YCM8-400PV |
70 |
100 |
65 |
25 |
25 |
100 |
130 |
| YCM8-630PV |
70 |
100 |
65 |
25 |
25 |
100 |
130 |
| YCM8-800PV |
70 |
100 |
65 |
25 |
25 |
100 |
130 |
Temperature correction factor table
| Product shell frame |
Working current In |
| 40℃ |
45℃ |
50℃ |
55℃ |
60℃ |
65℃ |
70℃ |
| 250 |
1 |
1 |
1 |
0.97 |
0.95 |
0.93 |
0.9 |
| 320 |
1 |
0.96 |
0.94 |
0.92 |
0.9 |
0.88 |
0.85 |
| 400 |
1 |
1 |
1 |
0.97 |
0.95 |
0.93 |
0.9 |
| 630 |
1 |
1 |
0.98 |
0.95 |
0.92 |
0.89 |
0.87 |
| 800 |
1 |
0.94 |
0.92 |
0.9 |
0.87 |
0.84 |
0.8 |
Note: 1. When the ambient temperature is lower than 50 ℃, the product can be used normally without derating;
2. The above derating factors are measured at the rated current of the shell frame.
Use of derating table at high altitude
| Product shell frame |
250 |
320 |
400 |
630 |
800 |
| Rated work Current A |
Rated working voltage V |
Rated power frequency withstand voltage V |
Rated work Current A |
Rated working voltage V |
Rated power frequency withstand voltage V |
Rated work Current A |
Rated working voltage V |
Rated power frequency withstand voltage V |
Rated work Current A |
Rated working voltage V |
Rated power frequency withstand voltage V |
Rated work Current A |
Rated working voltage V |
Rated power frequency withstand voltage V |
| 2 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
| 2.5 |
1 |
1 |
1 |
0.94 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0.94 |
1 |
1 |
| 3 |
1 |
0.98 |
0.98 |
0.92 |
0.98 |
0.98 |
1 |
0.98 |
0.98 |
0.98 |
0.98 |
0.98 |
0.92 |
0.98 |
0.98 |
| 3.5 |
1 |
0.95 |
0.95 |
0.9 |
0.95 |
0.95 |
1 |
0.95 |
0.95 |
0.95 |
0.95 |
0.95 |
0.9 |
0.95 |
0.95 |
| 4 |
1 |
0.92 |
0.92 |
0.87 |
0.92 |
0.92 |
1 |
0.92 |
0.92 |
0.92 |
0.92 |
0.92 |
0.87 |
0.92 |
0.92 |
| 4.5 |
0.98 |
0.89 |
0.89 |
0.84 |
0.89 |
0.89 |
0.98 |
0.89 |
0.89 |
0.89 |
0.89 |
0.89 |
0.84 |
0.89 |
0.89 |
| 5 |
0.96 |
0.86 |
0.86 |
0.82 |
0.86 |
0.86 |
0.97 |
0.86 |
0.86 |
0.86 |
0.86 |
0.86 |
0.8 |
0.86 |
0.86 |
Curve
Products
Projects
Solutions
Service
News
About CNC
Contact Us