JMS-F - SunSpec Rapid Shutdown Device

The easy module level rapid shutdown solution

SunSpec Rapid Shutdown Device

The SunSpec Rapid Shutdown System (model JMS-F), available from SMA, is the most cost-effective and reliable solution for fulfilling NEC 2017 module level shutdown requirements. The module-level device is certified for compatibility with the SunSpec communication signal and SMA inverters, making compliance simple and easy. By using the existing DC lines between the inverter and PV array for power line communications, installation and labor are significantly reduced. No additional wires or communication equipment is needed. The solution also features up to 50% fewer internal components vs alternatives, resulting in greater lifetime reliability.

Your benefits


  • Simple plug-and-play installation

  • No additional components necessary, reducing balance of system costs

Simple and robust

  • Power line based communication certified for compatibility with the SunSpec signal for rapid shutdown

  • Shuts down PV module whenever SunSpec signal is interrupted

Safe and certified

  • Certified and listed for compliance to:

    • UL 1741 Rapid Shutdown System Equipment

    • NEC 2017 690.12(B)(2) Module Level Shutdown

Reduced risk

  • Technical support from SMA’s #1 ranked service organization

  • Fully SunSpec certified solution when paired with an SMA SunSpec certified inverter

Check SMA compatibility with your SunSpec certified shutdown devices

Access our compatibility document to ensure interoperability with your SunSpec certified devices and SMA inverters. Please refer to the compatibility document for updated information and specific model numbers.

View compatibility document
System Diagram

SunSpec Rapid Shutdown Device


We will be happy to advise you on your PV projects.


We will be happy to advise you on your PV projects.

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Where to buy

Where to buy

Find out more about our SMA Authorized Distributors.

SMA Authorized Distributors