# Fonrich

> Fonrich develops and manufactures photovoltaic safety and module-level power electronics solutions, including rapid shutdown devices, solar power optimizers, arc-fault circuit interrupters, and DC arc-fault detection systems.

Fonrich specializes in DC arc-fault protection and module-level safety technologies for photovoltaic systems. The company holds more than 200 patents, and its products are compatible with over 60 inverter brands. Fonrich solutions are designed to improve PV system safety, operational visibility, and energy yield.

## Main Sections

- [Home](https://www.fonrich.com/): Official Fonrich website
- [Products](https://www.fonrich.com/smart-safety-protector--rsd-pc1/): Rapid shutdown, AFCI, power optimization, and PV monitoring products
- [Solutions](https://www.fonrich.com/solutions-residential/): Photovoltaic safety solutions for residential and other solar installations
- [Downloads](https://www.fonrich.com/downloads-product-docs/): Product datasheets, manuals, certificates, and technical documents
- [News and Resources](https://www.fonrich.com/news/): Company news, product updates, and photovoltaic safety information
- [About Fonrich](https://www.fonrich.com/about-us/): Company profile, technology, patents, and manufacturing capabilities
- [Contact Fonrich](https://www.fonrich.com/contact-us/): Sales inquiries and technical support

## Featured Products

- [FR-PVMS Smart Safety Protector](https://www.fonrich.com/products/smart-safety-protector-pv-rsd-afci-rapid-shutdown-mlpe-pvms-407.html): Module-level rapid shutdown and smart safety protection for photovoltaic systems
- [PV Optimizer and Rapid Shutdown Device](https://www.fonrich.com/products/smart-power-optimizer-pv-opt-mspt-rapid-shutdown-mlpe-pvmb-131.html): Module-level power optimization, monitoring, and rapid shutdown
- [String-Level AFCI](https://www.fonrich.com/products/string-level-arc-fault-circuit-interrupter-pv-protection-afci-kn-125.html): String-level DC arc-fault detection and circuit protection
- [Arc-Fault Detector](https://www.fonrich.com/products/arc-fault-detector-pv-inverter-afci-ess-afd-dcmg-as-108.html): Arc-fault detection solution for PV inverters and energy storage systems
- [PV Combiner Box Monitoring System](https://www.fonrich.com/products/dc-monitor-pv-combiner-box-monitoring-system-dcmg-m-138.html): DC current and operating-status monitoring for photovoltaic combiner boxes

## Technical Resources
https://www.fonrich.com/Products/Safety-Protector-RSD-TTQB-Rapid-Shutdown-407.html
https://www.fonrich.com/Products/Optimizer-Basic-1-1.html
https://www.fonrich.com/Products/string-level-arc-interrupter-PLC-1.html
https://www.fonrich.com/Products/arc-protection-box-B04A-1.html
https://www.fonrich.com/Products/ess-arc-fault-detector-300A-1.html

## Product Categories

Fonrich provides products and solutions in the following areas:

- Photovoltaic rapid shutdown systems
- Module-level power optimizers
- Arc-fault circuit interrupters
- DC arc-fault detectors
- PV combiner box monitoring
- Module-level monitoring and safety protection
- Residential, commercial, and utility-scale PV safety

## Contact

For product selection, quotations, distributor cooperation, and technical support, visit the [Fonrich contact page](https://www.fonrich.com/contact-us/).