Gold Member Since 2007
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Xinchi Electric Co., Ltd.

DC MCB, Solar Circuit Breaker, DC550V MCB manufacturer / supplier in China, offering Suntree DC Circuit Breaker DC MCB 2pole 4pole 16A 32A, 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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Suntree DC Circuit Breaker DC MCB 2pole 4pole 16A 32A

Purchase Qty.:
1-99 100-999 1,000+
FOB Unit Price: US $8 US $7 US $6.5
Purchase Qty. (Pieces) FOB Unit Price
1-99 US $8
100-999 US $7
1,000+ US $6.5
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Port: Ningbo, China
Production Capacity: 10000PCS/Week
Payment Terms: L/C, T/T, Western Union, Paypal

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Basic Info
  • Model NO.: DC SL7
  • Operation: Manual Type
  • Arc-extinguishing Medium: Air
  • Structure: Conventional Circuit Breaker
  • Type: Circuit Breaker
  • Certification: ISO9001-2000, CE, CB, TUV SAA
  • Quality Assurance: Two Years
  • Magnetic Tripping Characteristics: 6 10 16 20 25 32, 40, 50, 63A
  • Rated Voltage Ue: 1000VDC
  • Pollution Degree: IP22
  • Field: Solar System
  • Transport Package: Standard
  • 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, Overcurrent 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
  • Trademark: suntree/oem
  • Specification: CE SAA TUV
  • HS Code: 8536620000
Product Description
2 pole DC550V solar dc mcb
Suntree DC Circuit Breaker DC MCB 2pole 4pole 16A 32A

Suntree DC Circuit Breaker DC MCB 2pole 4pole 16A 32A
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 .Suntree DC Circuit Breaker DC MCB 2pole 4pole 16A 32A

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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