DC Circuit Breaker MR11-63 Series
MR11-63 DC circuit breaker is used in rated DC voltage to 1000V, rated current to 63A line, which plays the role of overload and short circuit protection, and can be used as the infrequent on-off of the line under normal circumstances.
Compliance with standards :GB/T 14048.2, IEC 60947-2, EU ROHS environmental requirements, CCC, CE, EAC, TUV certification.
Ambient Temperature: -35°C ~ +60°C
Relative Humidity: ≤95%
Altitude: ≤2000m
Overcurrent Protection Characteristics (Reference Temperature 30°C)
| Technical Parameter Item |
Parameter Value |
| Rated Voltage (Ue) |
DC 125V/250V(1P), DC 250V/500V(2P), DC 500V/1000V(4P) |
| Rated Current (In) |
1A, 2A, 3A, 4A, 6A, 10A, 13A, 16A, 20A, 25A, 32A, 40A, 50A, 63A |
| Rated Insulation Voltage (Ui) |
1000V |
| Rated Impulse Withstand Voltage (Uimp) |
4kV |
| Number of Poles |
1P, 2P, 4P |
| Instantaneous Trip Type |
C(7~10)In |
| Rated Ultimate Short-circuit Breaking Capacity (Icu) |
6kA(1P 250V/2P 500V/4P 1000V), 10kA(1P 125V/2P 250V/4P 500V) |
| Overcurrent Protection Characteristics |
See Table 2, Figure 1 |
| Mechanical and Electrical Life |
Mechanical Life: 20000 cycles, Electrical Life: 1500 cycles |
| Current Correction Factor at Different Temperatures |
Table 3 |
| Current Correction Factor at Different Altitudes |
Table 4 |
| Connecting Conductor |
Table 5 |
| Tightening Torque |
2.0N·m |
| Power Consumption |
Table 6 |
| Wiring Diagram |
Figure 2 |
| Outline and Installation Dimensions |
Figure 3, Figure 4 |
| Pollution Degree |
Class 2 |
| Protection Degree |
IP20 |
| Installation Category |
Class II, Class III |
Current Correction Values at Different Ambient Temperatures(Table 3)
Current Correction Coefficients at Different Altitudes(Table 4)
Trip Characteristic Curve (Figure 1)
Wiring: Suitable for copper conductors up to 25mm² (Table 5). Wiring method is screw tightening with a torque of 2.0N·m.
Power Consumption per Pole (Table 6)
Application Wiring Diagram ( Figure 2)
Wiring diagram description:
1), +: circuit breaker positive pole, -: circuit breaker negative pole.
2),L+:Positive pole of power supply, L-:Negative pole of power supply.
3), : load.
4) DC power supply usually "L-" grounded, positive and negative power system polarity "M" grounded.
4.11 Product characteristics:
4.11.1 Excellent breaking capacity.
4.11.2 Dual wiring function of conductor and busbar.
4.11.3 Energy storage operation, fast closing, long life.
4.11.4 Easy installation and removal.
4.11.5 Contact on-off indication, higher safety.
4.11.6 Green environmental protection and energy saving.
5. It is strictly prohibited to remove the sealing plug of the four-pole product for wiring operation
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