--- description: BENY's BFS-S Series ensures fire safety for solar rooftops with UL508i listing and IEC PV2 DC compliance, designed for reliability and protection. title: Solar Safety with BENY's BFS-S Firefighter Switch | BENY New Energy image: https://www.beny.com/wp-content/uploads/2021/08/未标题-2_0005_01.jpg --- [![logo]()](https://www.beny.com/) Search [Home](https://www.beny.com/) [Products](https://www.beny.com/products/) [Rapid Shutdown Device](https://www.beny.com/product-category/module-level-rapid-shutdown/) Firefighter Safety Switch String Level Rapid Shutdown Device BFS-S - ![未标题 2 0000 03]() - ![BFS-S 3]() - ![5]() - ![6]() - ![7]() - ![8]() - ![9]() - ![未标题 2 0005 01]() - ![未标题 2 0002 05]() - ![未标题 2 0000 03]() - ![BFS-S 3]() - ![5]() - ![6]() - ![7]() - ![8]() - ![9]() - ![未标题 2 0005 01]() - ![未标题 2 0002 05]() # Firefighter Safety Switch String Level Rapid Shutdown Device BFS-S Designed for solar rooftop fire protection, the BFS-S Series fire safety switch offers a string-level load break disconnect solution. #### Highlights : - Up to 1500V DC - Up to 50 Amp - 1 String / 2 Strings / 3 Strings / 4 Strings - IP66 aluminum enclosure with breathing valve - UL508i listed and IEC PV2 DC switch - Developed for 5 years’ warranty - Original MC4 connectors for seamless Plug and Play installation - Optional protection cover for rooftop installations - Elevate your solar system's safety and performance with our cutting-edge rapid shutdown devices. - ![CE-Certified icon]() - ![TUV 100X100 icon]() - ![UL-Certifed icon]() [Download Datasheet](https://www.beny.com/wp-content/uploads/2025/09/Datasheet-String-Level-Rapid-Shutdown-Solution-BENY-2025.2.12.pdf) [Request A Quote](javascrpt:;) - ![BFS S features]() ## Fire Fighter Safety Switch for Solar Building The BFS-S Series FireFighter Safety Switch protects rooftop installations against fire. A mechanical based switch will provide total isolation from the electrical parts of the solar array. The firefighter protects from any DC Fault that may be caused by the photovoltaic arrays, lightning, or short circuit - ![BFS S advan]() ## BFS-S Features - **IP66 aluminum enclosure** **with breathing valve**   - **Genuine MC4 Plug** **and Play**   - **Protection cover for** **rooftop installation** **is available**   - **Ul508i listed and** **IEC PV2 DC switch** - ![BFS S wiring]() ## BFS-S Wiring Diagram ## How the solution works? - ![BFS S advan new 04]() BFS-S offers a variety of disconnect methods. Remove the high DC voltage in PV strings and avoid the risk of electrocution. - Over Temperature Protection Automatic Shutdown - Main AC Power Shutdown by Manual - AC Power Loss Triggers DC Power OFF Automatic - Keep DC Power Isolation and Disconnect Even the AC Power is Back ## SPECIFICATION | Models | BFS-S | | | | | --- | --- | --- | --- | --- | | Max DC voltage IEC/EN 60947-3 | 1500V | | | | | Max DC current IEC/EN 60947-3 | 50A | | | | | | | | | | | Models | BFS-S1 | BFS-S2 | BFS-S3 | BFS-S4 | | Number of Strings | 1 string | 2 strings | 3 strings | 4 strings | | | | | | | | Operating Voltage | 90Vac-260Vac | | | | | Nominal Voltage | 230Vac | | | | | Nominal Current | 30mA | | | | | Start up Current | Average 100mA | | | | | Switch on Action Current | Max 300mA | | | | | | | | | | | Protection Degree | IP66 | | | | | Storage temperature allowed between | -40℃-85℃ | | | | | Maximum operating temperature before automatic switch OFF | +85℃ | | | | | Protection Level | Class II | | | | | Number of operations without current | 9700 | | | | | Number of operations under load with current | 300 | | | | ## RELATED PRODUCTS - [![beny bfs a2 rapid shudown back]()

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](https://www.beny.com/product-item/sunspec-rapid-shutdown-device-nec2020-bfs-21/) ## Talk to Our Expert Please enable JavaScript in your browser to complete this form. Your Name \* Your Company Email \* Your Phone \* Email Message Company Your Company \* Message \* Send![Loading]() ## Empower Efficiency: Unleash Quality Solar PV Protection and Electric Car Charging. 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