Shanghai Sunpole New Energy Co., Ltd.

Why we need Rapid shutdown switch for solar system

Rapid shutdown switch

Why we need Rapid shutdown switch for PV system

A Rapid Shutdown (RSD) switch is an electrical safety device used in photovoltaic (PV) systems to shut down the flow of electricity in the event of an emergency or maintenance. It is designed to reduce the risk of electric shock and fire hazards by quickly shutting off power in the event of an incident.

Rapid Shutdown switches are required by the National Electric Code (NEC) for PV systems installed on buildings or other structures, where emergency responders may need to access the roof in case of a fire or other emergency. The switch is typically installed at the array level, which allows for the rapid shutdown of the PV system in case of an emergency.

The switch is usually located near the PV array, and can be either manually operated or triggered automatically by an external signal. When activated, the switch quickly interrupts the flow of electricity from the solar panels, reducing the risk of electrical shock and fire hazards for anyone working on or near the PV system.

The features of Sunpole Rapid shutdown switch

Sunpole Rapid Shutdown (RSD) is a safety feature designed to reduce the risk of fire and electrical hazards in photovoltaic (PV) systems. Sunpole is a brand of RSD switch that is designed to meet the latest National Electrical Code (NEC) requirements for PV system installation.

The Sunpole rapid shutdown switch features include:

Compliance with NEC 2017 and 2020: The Sunpole RSD switch is designed to meet the latest NEC requirements for PV systems. It enables rapid shutdown of PV arrays to 80 volts or less within 30 seconds of initiating a shutdown signal.

High current capacity: The Sunpole RSD switch has a high current capacity of up to 600V DC and 20A. This ensures that it can handle the high voltage and current levels of PV systems without risking damage or overheating.

Easy installation: The Sunpole RSD switch is easy to install and can be mounted on a variety of surfaces, including roofs, walls, and enclosures. It features a compact design that reduces installation time and labor costs.

Durability and reliability: The Sunpole RSD switch is built to withstand harsh outdoor conditions, such as extreme temperatures and moisture. It features a rugged design with high-quality materials that ensure long-term durability and reliability.

Compatibility: The Sunpole RSD switch is compatible with a wide range of PV system components, including inverters, modules, and combiner boxes. It can also be used with both string and module-level rapid shutdown systems.

Overall, the Sunpole rapid shutdown switch is a reliable and efficient solution for ensuring the safety and compliance of PV systems with the latest NEC requirements.

Different types of RSD

Sunpole offers a range of rapid shutdown switches to meet different system requirements and installation needs. Here are some of the different types of Sunpole rapid shutdown switches:

  1. String-Level RSD Switch: This type of Sunpole switch is installed at the string level, and it controls the rapid shutdown of a string of solar modules. It is ideal for PV systems with a limited number of strings.
  2. Module-Level RSD Switch: This type of Sunpole switch is installed at the module level, and it controls the rapid shutdown of each solar module individually. It is ideal for PV systems with a high number of strings and modules.

Sunpole offers a range of rapid shutdown switches that can meet different system requirements, installation needs, and compliance standards. Choosing the right type of Sunpole switch depends on the specific PV system configuration and design requirements.

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