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Xinchi Electric Co., Ltd.

DC Circuit Breaker, Solar Circuit Breaker, DC550V Circuit Breaker manufacturer / supplier in China, offering 2 Pole DC550V Solar DC Circuit Breaker, Sq5 ATS Change-Over Switch 3200A Automatic Transfer Switch for Generator, Solar DC Circuit Breaker DC1000V 4 Pole 6A-63A DC MCB and so on.

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Supplier Homepage Product Solar Products DC MCB 2 Pole DC550V Solar DC Circuit Breaker

2 Pole DC550V Solar DC Circuit Breaker

FOB Price: US $8 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $8/ Piece
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Production Capacity: 10000PCS/Week
Transport Package: Standard
Payment Terms: L/C, T/T, Paypal

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Basic Info
  • Model NO.: SL7-63
  • Operation: Manual Type
  • Arc-extinguishing Medium: Air
  • Structure: Conventional Circuit Breaker
  • Type: Circuit Breaker
  • Certification: ISO9001-2000, CE, CB, TUV
  • Quality Assurance: Two Years
  • Magnetic Tripping Characteristics: 6 10 16 20 25 32, 40, 50, 63A
  • Rated Voltage Ue: 1000VDC
  • Pollution Degree: IP22
  • Trademark: suntree/oem
  • Origin: Zhejiang
  • Breaking Capacity: Low Voltage Circuit Breakers
  • Speed: Normal Type Circuit Breaker
  • Installation: Fixed
  • Poles Number: 1p/2p/3p/4p
  • Function: Circuit-Breaker Failure Protection
  • Certificate: CB, Nemko, TUV, CE, SAA
  • Brand: Suntree/OEM
  • Rated Current(a): 6ka 10ka
  • Rated Frequency: 50Hz/60Hz
  • Product: Solar DC Circuit Breaker MCB
  • Specification: CE SAA TUV
  • HS Code: 8536620000
Product Description
2 pole DC550V solar dc circuit breaker

The SL7-63 is a DC circuit breaker dedicated to multi string photovoltaic installations.
This circuit breaker is designed to protect the cables located between each string of photovoltaic modules and the photovoltaic inverter against overloads and short circuits (see application diagram).
Combined with a switch , the SL7-63 will be installed in a string PV protection enclosure at the end of each string of photovoltaic modules.
It can be locked (by a padlocking device) in OFF position as a safety measure for removal of the PV inverter.
Since a fault current can flow in the reverse direction to the operating current, the SL7-63 can detect and protect against any bidirectional current.
To ensure the safety of the installation, it is necessary, depending on the various types of application, to combine the SL7-63 with:a residual current device at the AC end a fault passage detector (insulation monitoring device) at the DC end an earth protection circuit breaker at the DC end In all cases, fast action on site will be required to clear the fault (protection not ensured in the event of a double fault).
SL7-63 is not polarity sensitive: (+) and (-) wires can inversed without any risk.
The SL7-63 is: delivered with three inter-pole barrier to provide increased isolation distance between two adjacent connectors.

                                     DC MINI CIRCUIT BREAKER
Breaking Capacity6KA,10KA
Characteristic CurveB,C,D
Working Temperature"-5°"to +40°
Protection DegreeIP20
Electrical lifeMore than 8000times
Mechanical lifeMore than 2000times
Installation35MM DIN RAIL
Installation Altitude≤2000M

Technical data
Position contact indication - suitability for isolation according to IEC/EN 60947-2 standard.
The presence of the green strip guarantees physical opening of the contacts and allows operations to be performed on the downstream circuit in complete safety.
Increased product service life thanks to fast closing independent of the speed of actuation of the toggle.
Pre-wired product: Input / Output on the same side .

Rated service breaking capacity (Ics)
100 % of the Icu
Endurance (O-C)Electrical1,500 cycles (where L/R=2 ms)
Mechanical20, 000 cycles


Mechanical20, 000 cycles
Degree of pollution2
CategoryA (no delay in accordance with IEC / EN 60947-2 standards)
Degree of protection
(IEC 60529)
TropicalisationRelative humidity: 95 % at 55°C in accordance with
IEC 60068-2 and GB 14048.2 standards
TemperatureOperating-25°C to 70 °C
Storage-40°C to 85°C
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