Surge Protector for Photovoltaic Systems Simet SV B+C 3P (model 85036002)

Simet SV B+C 3P is a surge protection device developed for photovoltaic (PV) installations, providing combined B and C class protection in a three‑phase configuration. Designed to be installed near inverters, combiner boxes or AC distribution panels, this device helps limit transient overvoltages caused by lightning strikes and switching events, reducing the risk of damage to PV arrays and associated electronics. The unit is intended to improve overall system reliability and to meet common installation practices for grid‑connected solar systems.

Advantages

The combined B+C protection topology provides both high-energy discharge capacity for external surges and fast clamping for switching transients, offering layered protection for sensitive inverter electronics. A three‑phase design enables protection of all AC conductors while maintaining compact installation footprint. The device is constructed to integrate seamlessly into standard PV system layouts and supports safer operation by diverting hazardous surges away from connected equipment.

Suitable for

• Grid‑connected photovoltaic installations with central or string inverters
• Combiner boxes and AC distribution panels near inverter inputs
• Industrial and commercial solar systems requiring three‑phase surge protection
• Sites in areas with elevated lightning activity or frequent switching transients

Key specifications

• Protection classes: combined class B and class C functionality for layered surge suppression
• Configuration: three‑phase protection covering all AC conductors
• Intended application: photovoltaic (PV) systems, inverter and combiner box integration
• Primary function: limit transient overvoltages and divert surge energy away from connected devices
• Installation type: DIN‑rail or panel mounting suitable for electrical distribution enclosures (verify compatibility with enclosure dimensions)

How to use

Mount the device in a location close to the inverter or combiner box where it can protect the AC conductors with the shortest practical lead lengths. Follow the system wiring diagram and local electrical codes when connecting the three‑phase lines and protective earth conductor. Ensure proper torque on terminal connections and verify that protective earth is continuous and low impedance. After installation, test continuity and perform an insulation check on the PV system before energizing the inverter. Periodically inspect the device for signs of damage or end‑of‑life indication if present.

Usage recommendations

For optimal protection, combine this surge protector with upstream lightning protection measures and ensure correct earthing practices. Use appropriately rated fuses or circuit breakers in the system and schedule periodic maintenance checks to confirm ongoing protection performance.