Catching the fault before it becomes a costly outage
In a utility-scale solar plant, a fault that goes undetected for even a few days can cost significant energy yield. The String Monitoring Box (SMB) tracks each solar string individually – current, voltage, and fault conditions in real time – giving EPC companies, contractors, and solar developers the visibility they need to act before small issues become expensive downtime. Synchro’s SMBs are built for the demands of utility-scale operation, not adapted from smaller commercial-grade equipment.
Built to Perform
Real-time string monitoring
tracks current, voltage, temperature, and fuse status per string for fast fault detection
SCADA compatible
integrates with centralised plant management systems for large-scale operations
High capacity and versatility
models from 8 to 24 strings, for rooftop to utility-scale deployment
Rugged and weatherproof
IP65/IP67-rated enclosures built to industrial environmental standards
Customisable configurations
8, 12, 16, and 24-string models matched to project size
Enhanced safety
surge protection devices, isolators, and fuses built in as standard
Built to Specification
SMB-8
monitors up to 8 strings, suited for commercial and small rooftop systems
SMB-12
monitors up to 12 strings, ideal for medium-sized industrial and commercial systems
SMB-24
comprehensive 24-string monitoring built for utility-scale solar farms
Standard features
fuses, isolators, surge protection devices, IP65/IP67 waterproof enclosures, SCADA compatibility
The Synchro Edge
- Trusted across scale :Recognised by EPC companies and developers for reliability across both industrial and utility-scale solar
- Full lifecycle support : From product selection and installation guidance through ongoing maintenance
Where It Works
Utility-scale solar power plants (500kW–1MW+)
- Real-time performance monitoring across individually controlled strings
- Fast fault detection prevents small issues from becoming costly downtime
- Historical performance data supports predictive maintenance and ROI optimisation
- SCADA integration enables centralised oversight from a single control room
Commercial solar installations (50kW–250kW)
- Consistent energy output through per-string performance tracking
- Lower maintenance costs via early anomaly detection
- Integrates with building energy management systems
- Scales easily as commercial installations grow
Industrial solar systems
- Continuous monitoring maintains steady energy supply for critical operations
- Prevents reverse currents, voltage swings, and surges
- Detailed reporting supports data-driven maintenance scheduling
- Built to support future expansion of industrial solar infrastructure
Off-grid and hybrid solar systems
- Reliable power continuity in remote installations
- Remote monitoring and fault alerts without a site visit
- Adaptable to varying environmental demands and capacities
- Early fault detection extends the lifespan of critical solar assets
What does a String Monitoring Box do?
Monitors the performance of each solar string individually – voltage, current, and fuse status – enabling real-time fault detection and optimal system efficiency.
Does it integrate with SCADA?
Yes — supports RS-485 Modbus RTU for centralised SCADA monitoring.
What capacities are available?
From 8-string rooftop systems to 24-string utility-scale deployments.
Can SMBs be used commercially as well as at utility scale?
Yes — suited to utility-scale farms, off-grid installations, commercial rooftops, and industrial solar systems alike.
Looking for a string monitoring box that catches faults before they cost you yield? We deliver custom-designed, pre-tested monitoring panels for projects of any size, with pan-India delivery.