Claire
Mr.Fu
Claire
SJK47-125 MCB Miniature Circuit Breaker - Reliable 230V/400V Protection from China Suppliers and Factory
| 1 | Circuit Breaker Model Number |
| 2 | Design Code |
| 3 | Frame Size Rated Current |
| 4 | Number of Poles (Arabic numerals, Neutral pole marked as N) |
| 5 | Instantaneous Release Type (C, D) |
| 6 | Rated Current Value |
Describe:
1: Power Supply Terminal
2: Company Logo
3: Model Number
4: Rated Current: 63A, 80A, 100A, 125A
5: Rated Voltage: 230V (1P) / 400V
6: Rated Frequency
7: Compliance Standards
8: Rated Breaking Capacity
9: Contact Indication
10: Wiring Diagram 11: Load Side
| Set Current | Rated Current (A) | Number of Poles | Rated Voltage (V) | Ultimate Breaking Capacity (Icu) (A) |
| (C) Ii=8.5In — For Distribution Protection | 63, 80, 100, 125 | 1 | 230/400 | 10000 (Ics=75%Icu) |
| 2, 3, 4 | 400 | |||
| (C) Ii=12In — For Distribution Protection | 63, 80, 100, 125 | 1 | 230/400 | |
| 2, 3, 4 | 400 |
| • Overcurrent Protection Characteristics of Circuit Breaker | Table 2 | |||||
| Trip Unit Type | Test Current (A) | Initial State | Test Duration | Expected Result | Note | Reference Temperature |
| C, D | 1.05In | Cold State | t≤1h (In≤63A) t≤2h (In>63A) |
No Trip | - | +30℃ |
| C, D | 1.3In | Immediately Followed by a Test | t≤1h (In≤63A) t≤2h (In>63A) |
Trip | Current Rises to Specified Value Within 5s | |
| C, D | 2.55In | Cold State | 1s < t < 120s | Trip | - | |
| C | 8.5In×80% | Cold State | t≤0.2s | No Trip | Close Auxiliary Switch to Power On | |
| D | 12In×80% | |||||
| C | 8.5In×120% | Cold State | t < 0.2s | Trip | Close Auxiliary Switch to Power On | |
| D | 12In×120% | |||||
| Circuit Breaker Protection Characteristics Curve Diagram (see fig.1 & fig.2) | ||||||
Figure 1 — Type C Thermal/Magnetic Trip Characteristic Curve
Figure 2 — Type D Thermal/Magnetic Trip Characteristic Curve
This series of circuit breakers is rail-mounted and suitable for TH35-7.5 steel mounting rails. Unit: mm
The circuit breaker is equipped with 6 types of accessories, including: OF auxiliary contact, MX+OF shunt trip release, SD alarm contact, MV overvoltage release, MN undervoltage release, MYMN over & undervoltage release. OF and SD are installed on the left side of the product. Other accessories are installed on the right side of the product.
Order Specifications Required from Customers:
a) Product Name: Model Number. Rated Current;
b) Rated Current. Number of Poles;
c) Minimum Order Quantity.
Example:
Order DZ47-125 3-pole circuit breaker, Type C, rated current 100A, quantity 1000 units.
Should be written as: DZ47-125/3P, C100, 1000 units.