DC12~1500V 63~320A 2P/3P Molded Case Circuit Breaker STM3-320PV

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
CNST 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. Globally Certified and Professional PV Protection Equipment Manufacturer
Our MCCB products hold CE, ISO, and GTS certifications, complying with IEC 60947-2 standards. CNST provides customers with one-stop PV protection equipment solutions. We develop and manufacture isolator switche, PV combiner box(MCB, SPD, Fuse, MCCB), DC smart monitoring, battery protection box, AC distribution box, and PV connectors. Simply contact us, and we will analyze your requirements and create customized product solutions and 3D models for you