SMA Energy System Business

The UL 3741 PV Hazard Control Solution

UL 3741 PV Hazard Control Solution

For the past 40 years, SMA has led the way with innovative solutions and groundbreaking technology in the renewable energy industry. Today, SMA is proud to offer the first-to-market UL 3741 solution together with four premier racking partners. It is time to say goodbye to additional DC connectors and module-level devices and the risk they introduce, and say hello to a powerful combination that is both UL 3741 and NEC 690.12 compliant.

UL3741 System Diagram Sunny Tripower CORE1 - UL 3741 PV Hazard Control Solution

Example UL 3741 system layout

Learn more

What is UL 3741?

Underwriters Laboratory (UL)3741 addresses safety processes and principles for evaluating, and recognizing compliance for, rapid-shutdown PV arrays that protect firefighters from shock hazards on rooftops with solar panels.

To achieve UL 3741 certification, products must pass a series of tests designed to simulate situations firefighters may encounter on a solar rooftop. The testing analyzes what happens when first responders fall on damaged solar panels while wearing typical protective gear.

About the SMA Sunny Tripower CORE1

The Sunny Tripower CORE1 offers an intelligent IV curve diagnostic, advanced string monitoring and SMA Smart Connected proactive monitoring and service support. As the world’s first free-standing PV inverter for use with commercial rooftops, carports, ground mount, and repowering legacy solar projects, the Sunny Tripower CORE1 delivers logistical, labor and service cost reductions.

Why is this important?

As a solar industry leader, SMA is dedicated to enhanced measures, regulation and protocols that ensure and encourage the adoption of safe, sustainable energy systems and processes. The goal of UL 3741 is to make rooftop arrays safer for firefighters in an emergency while creating a more consistent standard for installation methods and requirements.

SMA Sunny Tripower CORE1

The SMA Sunny Tripower CORE1 inverter is part of the first system to market with approved compliance of rapid shutdown for buildings without module-level power electronics or switches. This design makes for an inherently simpler, more cost-effective option that is easier to install, commission, operate and own.

CORE1 Benefits at a Glance:

  • No additional DC connectors or module-level devices needed, offering more reliability and safety

  • Reduce balance of system costs by $.07 - .09 per watt

  • A more reliable design with the highest system uptime

  • Virtually eliminate connector mismatch

  • Reduce voltage drop energy losses

  • Minimize lifetime of service risk and additional O&M costs

  • Less electronic waste

SMA Sunny Tripower CORE1

Premier Racking Partners + SMA Sunny Tripower CORE1 = UL 3741 Compliance

Find more information on UL 3741 mounting systems:

Unirac - All Product Lines

Sollega FastRack 510

IronRidge BX

PanelClaw ClawFR

Premier Racking Partners + SMA Sunny Tripower CORE1 = UL 3741 Compliance

Read more about the UL 3741 PV Hazard Control standard

from Brett Henning, SMA Commercial & Industrial Product Manager and see how this new solution might be the perfect choice for your next project.

Learn more on SMA Sunny

Media Zone

Hazard Control – Understanding UL 3741 and new rapid shutdown solutions

Author: Ryan Mayfield, Solar expert and CEO at Mayfield Renewables

Published by: Solar Builder Magazine

Read here
Hazard Control – Understanding UL 3741 and new rapid shutdown solutions
To learn more about UL 3741 and the SMA-compliant systems, we invite you to contact an SMA Territory Manager today.

Want to learn more?

To learn more about UL 3741 and the SMA-compliant systems, we invite you to contact an SMA Territory Manager today.

Next Steps
SMA Authorized Distributor

SMA Authorized Distributors

Find a trusted SMA Authorized Distributor for all of your SMA product and solution needs.

Learn more
Example UL 3741 system layout