AC Changeover & Protection Box for 2 × 50 kW Three-Phase Inverters
 
This AC Changeover & Protection Box is a heavy-duty, pre-wired distribution and switching solution designed for high-power commercial and industrial solar installations using two 50 kW three-phase inverters. It provides safe and reliable manual changeover between grid supply and inverter supply while ensuring proper AC protection for large loads and critical equipment.
All major switching and protection components are integrated into a single, professionally assembled enclosure, allowing for a clean installation, simplified commissioning, and long-term operational reliability.
 
Key features:
High-capacity three-phase main AC circuit breaker
Dedicated three-phase grid input circuit breaker
Input surge protection devices (SPD) on all phases
Dedicated three-phase inverter output circuit breakers for each 50 kW inverter
Output surge protection devices (SPD)
Heavy-duty three-phase manual changeover switch rated for high current
Clearly labelled phases, inverter inputs, and protection devices
Industrial-grade enclosure suitable for indoor or protected outdoor installation
 
Suitable for:
Dual 50 kW three-phase solar inverter systems
Commercial, agricultural, and industrial solar installations
Large backup power and load-shedding mitigation systems
 
Benefits:
Designed for high-power three-phase applications
Improves system safety and equipment protection
Simplifies installation and fault finding
Provides a neat, compliant AC distribution solution when installed by a qualified electrician