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Choosing the right DC circuit breaker
When purchasing a DC MCB , there are three core points: matching the voltage and current of the system, ensuring that protection does not "fail" under extreme operating conditions, and controlling the full...
• Quickly dissipate heat and reduce the service temperature
• Plug-in clips, Easy module replacement
• Flash Barrier, Prevent arc propagation in current impact
• Use a suitable electrical insulator to keep a 10mm min.safety distance from the PV-SPD and other grounfed parts in the housing
• The green and red visual indicator flags show the module protective status (green = good, red = replace)
• Features visual indication and optional remote contact signaling (floating changeover contact)
• Feature a combined disconnection
• Short-circuiting (shunting) device with safe electrical isolation to Prevent fire damage due to DC arcs.
| IEC ELECTRICAL | ||||
| Maximum Continuous Operating DC Voltage | (DC+) - PE, (DC-) - PE,(DC+) - (DC-) | UCPV | 600V | |
| Nominal Discharge Current (8/20us) | In | 40A | ||
| Impulse Discharge Current (10/350 us) | Iimp | 12.5kA | ||
| Total Discharge Current (10/350 ys) | ITotal | 6.25kA | ||
| Total Discharge Current (8/20 us) | ITotal | 20kA | ||
| Maximum Discharge Current (8/20 1s) | Imax | 40kA | ||
| Voltage Protection Level | (DC+) - PE, (DC-) - PE,(DC+) - (DC-) | up | ≤2200V | |
| Response Time | tA | <25 ns | ||
| Short-Circuit Current Rating | ISCPV | 2000A | ||
| Number of Ports | 1 | |||
| MECHANICAL & ENVIRONMENTAL | ||||
| Operating Temperature Range | Ta | -40 °F to +158 °F [-40 °C to +70 °C] | ||
| Permissible Operating Humidity RH | RH | 5%...95% | ||
| Atmospheric pressure and altitude | 80k Pa ... 106k Pa /-500 m... 2000 m | |||
| Terminal Screw Torque Mmax | Imax | 39.9 Ibf-in [4.5 Nm] | ||
| Conductor Cross Section (max) | 2 AWG (Solid, Stranded)/4 AWG (Flexible) 35mm² (Solid, Stranded)/25mm² (Flexible) |
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| Mounting | 35 mm DIN Rail, EN 60715 | |||
| Degree of Protection | IP20 (built-in) | |||
| Housing Material | Thermoplastic: Extinguishing Degree UL 94 V-0 | |||
| Thermal Protection | Yes | |||
| Operating State / Fault Indication | Green ok / Red defect | |||
| Remote Contacts (RC) | Option | |||
| RC Switching Capacity | AC: 250V / 0.5 A; DC: 250V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A | |||
| RC Conductor Cross Section (max) | 16 AWG (Solid)/1.5mm²(Solid) | |||
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