Fronius Rapid Shutdown Box Quattro

The Fronius 4240154 Rapid Shutdown Box Quattro is a rapid shutdown (RSD) accessory that safely de-energizes PV conductors for code-compliant array-level shutdown. Powered directly by the PV array, it handles a maximum PV input of 600 VDC and 25 A input current across up to 4 strings, with two MC-4 input circuits (4 with MC-4 Y connectors) and two spring-clip output circuits. Housed in a rugged NEMA 4X enclosure, it suits residential and commercial Fronius installations.

Key Features:

• Rapid shutdown (RSD) device, array-powered
• Max PV input 600 VDC, 25 A
• Input and start voltage 80 VDC
• Max output current 25 A / 25 A
• Up to 4 strings, 2 MC-4 input circuits
• 2 spring-clip outputs, 2 conduit ports (3/4 in and 1 in)
• Typical self-consumption 2 W during operation
• NEMA 4X enclosure, -40°F to 149°F operation
• DC homerun wire up to AWG 8, comms AWG 14
• UL 1741, FCC 15 Class B, 5-year warranty

Ideal for Fronius Galvo, Primo, and Symo inverters (excluding the Symo 15.0-3 208) up to 600V, this unit provides code-compliant rapid shutdown with no external hardware required. Its NEMA 4X build and 13123 ft maximum elevation rating suit demanding outdoor Canadian installations. Order the 4240154 from Circuit Solar, in stock in Canada and shipped from Red Deer, AB.