NRC1-40 RCCB with Overload Protection(RCBO) for electrical safety

● High-Capacity Current Aggregation

Supports up to 24 PV string inputs with a single output, each string handling a maximum current of 30A, ideal for scalable solar installations.

● Robust Electrical Safety

Series Isolator Switches (16A–60A) and 1500VDC max voltage capability, enabling safe isolation and maintenance across diverse PV systems. Integrated NS1-PV40 Surge Protector (1000VDC, 40KA) with pluggable design for lightning protection, minimizing surge damage risks.

● Dual Protection Mechanisms

Over-Current Protection: SFPV-25B touch-safe fuse with LED indicator for real-time fault detection. Short-Circuit Protection: SFPV/NKC1 circuit breakers support up to 630A max current and 1000VDC, ensuring system-wide safety.

● The IP55/IP65 design is used for outdoor installation.

● MC4 compatible input/output connectors for easy installation.

● DC fuse for each PV string with fuse links meet PV standard.

● DC isolator or DC MCB for isolation or over-voltage protection with inside operation.

● Anti-lighting and surge protector only for PV.

● Each channels has 6 sets of input/output connectors.

● The enclosure is made by polycarbonate and ABS, anti-UV or Stainless material.

● The circuit breaker can operate at the ambient air temperature of -5℃~+40℃ (see circuit breaker derating factors in the sample when the temperature is higher than +40℃ to +60℃);

● The elevation of installation sites cannot be more than 2,000m;

● The relative air humidity of installation sites cannot be more than 50% at the highest temperature of +40℃; relatively high humidity such as 90% at 20℃ is available at relatively low temperature; please take special measures to remove condensation occasionally generated by temperature variation;

● The pollution grade is III;

● The installation category of the main circuit of the circuit breaker, a UVT coil and the primary coil of a power transformer is IV, while the installation category of the other auxiliary circuits and control circuits is III;

● The circuit breaker is suitable for electromagnetic environment A;

● Marine and damp and tropical type circuit breakers can resist to the influences of humid air, salt mist and mildew;

● Marine circuit breaker can operate reliably during normal vibration of ships;

● 1E circuit breaker can resist to the environmental influence of nuclear industry;

● The circuit breaker should be installed according to the installation requirements of the operating manual. The vertical gradient of the circuit breaker is not more than 5°, and the vertical gradient of the marine circuit breaker is not more than 22.5°;

● The circuit breaker should be installed in places without explosion hazards, conducting dust, metal corrosion and insulation damages;

● The circuit breaker should be installed in small cabinet chambers, and be equipped with door frames, with the protection level up to IP40.

● Intelligence, zero flashover, isolating function;

● Higher current breaking and short circuit withstand capacity;

● Overload long-time delay, short-circuit short-time delay, short-circuit instant and ground fault functions (optional);

● The drawer seat has three position indications, “Connect”, “Test” and “Separate”;

● It can realize intelligent network monitoring, and can be applied to Modbus, Profibus, Devicenet, CAN and TCP communication protocols, facilitating in integrated management of users;

● It can be equipped with FDM3 module, to realize remote warning and monitoring;

● It accords with IEC60947-2 and GB14048.2 standards;

● The circuit breaker has obtained the “CCC” mark.