HomeProductsMCCBDC MCCBDC12~1500V 63~320A 2P/3P Molded Case Circuit Breaker MCCB

DC12~1500V 63~320A 2P/3P Molded Case Circuit Breaker MCCB

1. MCCB Specifically Designed for PV and Battery Applications
2P/3P DC MCCBs provide reliable overload, short-circuit protection, and isolation functions for PV systems with rated DC voltages of 12-1500V and rated currents of 63A/100A/125A/160A/180A/200A/225A/250A/300A/320A, featuring a breaking capacity up to 20kA
2. Flame-Retardant Housing with Silver Contacts
The resin enclosure offers high insulation and exceptional flame-retardant properties. Internal conductive components feature silver contacts for low resistance and minimal heat generation
3. Thermal-Magnetic Trip and Non-Polar Design
Precision thermal-magnetic trip technology combined with enhanced DC arc extinction capability ensures safe and reliable disconnection at combiner boxes and inverter inputs. Non-polar wiring and space-saving design enable seamless integration with PV modules
4. DC MCCB Applications
CNLONQ DC molded case circuit breakers serve as essential protective components in PV systems, widely deployed at critical junctions including PV strings, combiner boxes, inverter inputs, and battery energy storage systems
5. EU Certification and Professional MCCB Manufacturer
CNLONQ provides R&D, production, and quality inspection for a full range of molded case circuit breakers. MCCBs are CE, ISO, and GTS certified, compliant with IEC 60947-2 standards
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Product Description & Video
Parameters
Product Parameters
Technical Data
Model LQM3-320PV 2P LQM3-320PV 3P
Type Moulded Case Circuit Breaker (MCCB)
Pole 2P 3P
Rated voltage  Ue DC1000V AC 690V DC 1500V AC 690V
Rated Insulation Voltage Ui 1250V 1500V
Rated Current In 63A 100A 125A 160A 180A 200A 225A 250A 300A 320A 
Frame Degree Rated Current 320A
Rated Impulse Withstand Voltage Uimp 8kV
Breaking Capacity Icu 20kA
Operating BreakingCapacity Ics 20kA
Trip Type Thermal-magnetic
Standard IEC60947-2/GB14048.2
Mechanical Life (times) 20000
Electrical Life (times) 3000
Housing Material Bakelite
Conductor Material Copper
Quality Certificate CE、RoHS、GTS、ISO9001
Operating Temperature -35℃ to 70℃
Humidity ≤95%
Altitude ≤2000m
Installation Fixed,plug-in
Accessory Function alarm contacts, shunt release, undervoltage release
Size and Weight
Product Size  L*W*H(mm) 180*76*126 180*107*126
Product Weight(kg) 1.948 2.591
Individual package Size L*W*H(mm) 258*134*182 258*192*182
Individual package Weight(kg) 2.115 2.752
Packaging Details 4 Pcs per carton 2 Pcs per carton
Outer box Size  L*W*H(mm) 395*295*280 400*267*195
Outer box Weight(kg) 9.46 6.504

Features

Genuine Materials
Genuine Materials
Housing made of flame-retardant insulating PET. Silver contacts, tin-plated copper terminals
Secure Wiring
Secure Wiring
Thickened tinned copper terminals ensure low resistance and reliable wiring
Circuit Protection
Circuit Protection
Provides overload and short-circuit protection with isolation circuit functionality Breaking capacity: Icu=20kA
Flame Retardant
Flame Retardant
UL94V-0 rated, self-extinguishing when removed from flame
Stable Operation
Stable Operation
perates reliably from -35°C to +70°C, dustproof and corrosion-resistant
Non-polarized
Non-polarized
No need to distinguish between positive and negative terminals, accommodating reverse polarity scenarios
Contact CNLONQ for free customization
Contact CNLONQ for free customization
Our dedicated team of engineers will design a customized solar solution tailored to your needs at no charge

Why does your PV system need CNLONQ molded case circuit breakers?

A PV system needs a specialized MCCB like CNLONQ to safely interrupt high-voltage DC power, which is far more hazardous than AC, by effectively quenching dangerous electrical arcs. It provides critical protection for system components against overloads and short circuits, ensures reliable isolation for maintenance, and guarantees compliance with international safety standards.

 

Certifications
ISO 9001
ISO 9001
MCCB CE
MCCB CE
MCCB GTS
MCCB GTS
RoHS
RoHS
Provide a complete PV off-grid and grid-connected protection system
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HomeProductsMCCBDC MCCBDC12~1500V 63~320A 2P/3P Molded Case Circuit Breaker MCCB
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