1.Product Description
       The PV AC combiner box is a critical distribution device in PV power systems, comprising the following components:

1).Structural Components
        Enclosure: High-strength metal with anti-corrosion coating, IP65-rated for harsh outdoor environments.
       Input Terminals: Accommodates multiple inverter AC outputs (e.g., 4–16 channels), each with an independent circuit breaker.
       Main Circuit Breaker: Master output switch with overcurrent and short-circuit protection.
       Surge Protection Device (SPD): Lightning and grid surge suppression, compliant with IEC 61643.
       Monitoring Module: Integrated current/voltage sensors, smart meters, and optional temperature monitoring.
       Communication Unit: Supports RS485, Ethernet, or 4G wireless for SCADA integration.

2) Technical Specifications
       Input Channels: 4–24 (customizable).
       Rated Voltage: AC 230V/400V (low voltage), AC 800V (medium voltage).
       Rated Current: 63A–630A (per channel), up to 1200A total.
       Insulation Resistance: ≥100MΩ (tested at DC 1000V).
       Operating Temperature: -25°C to +60°C (wide-temperature design).

2. Product Functions
1) Core Functions
Power Consolidation
       Parallel connection of multiple inverter AC outputs to reduce cable losses and improve system efficiency.
Circuit Protection
       Overcurrent/Short-Circuit Protection: Each channel equipped with fuses or breakers for rapid fault isolation.
       Surge Protection: SPD response time ≤25ns, discharge capacity up to 40kA (10/350μs waveform).
       Residual Current Protection: Optional RCD (Residual Current Device) for personnel safety.
Intelligent Monitoring
       Real-time data acquisition (voltage, current, power, energy yield) with cloud platform integration.
       Fault Alarms: Local audible/visual alerts + remote notifications (SMS/app) for overtemperature, open-circuit, etc.
Remote Control
       Supports remote switching for smart grid demand response.

2) Auxiliary Functions
       Thermal Management: Built-in temperature/humidity sensors with optional fans or heaters.
       Fire Protection Interface: Dry contact output for fire alarm system integration.

3. Product Features
High Reliability
       Key components (e.g., breakers, SPDs) from global brands (Schneider, ABB), service life ≥10 years.

Modular Design
       Easy maintenance with quick-replace SPD and monitoring modules, minimizing downtime.

Smart Integration
       Multi-protocol compatibility (Modbus RTU/TCP, DL/T645) for third-party platform interoperability.

Safety Compliance
       Double-insulated construction, anti-shock locks, compliant with IEC 61439-2.

Customization
       Tailored solutions for channel count, current rating, communication, and dimensions.