IMO DC Solar Isolator 600V 32A (UL)

IMO DC Solar Isolator Switch – 600V 32A PV Disconnect When it comes to solar, DC safety is not optional. This IMO DC Solar Isolator is purpose-built to safely disconnect photovoltaic arrays under load — something standard AC switches are not designed to handle. Available in 1-string and 2-string configurations, this is a professional-grade solar disconnect for permanent, inspected, and higher-voltage PV installations. ⚠️ Built for Code-Compliant Solar Installs This IMO isolator is cUL / cRUus certified, making it suitable for Canadian solar installations requiring electrical inspection and approval. When working with higher-voltage or larger solar arrays, using properly certified DC equipment helps ensure safe operation, reliable disconnect under load, and smoother inspection sign-off. Why Use an Isolator Switch? Solar panels can produce dangerous DC voltage whenever they are exposed to light. Even if the inverter or charge controller is turned off, the PV wiring can still remain live unless there is a proper disconnect installed between the array and the equipment. A DC isolator switch gives you a safe, intentional way to shut off solar input for maintenance, troubleshooting, emergency service, or equipment replacement. This is especially important on higher-voltage strings where pulling connectors apart under load can create arcing. Using a proper DC-rated, cUL-certified isolator helps protect the installer, the equipment, and the building. For inspected installations, it also shows that the system was built with recognized, purpose-designed solar safety equipment. Why You’ll Love This TRUE DC switching — purpose-built for solar, not a reworked AC switch cUL / cRUus certified — suitable for Canadian electrical installations and inspections Rated for larger arrays — 600V DC, 32A capacity Lockable OFF position — safer servicing and clearer shutdown control Outdoor-rated enclosure — IP66 / NEMA-rated protection for solar environments Trusted IMO quality — a recognized vendor used in professional PV systems worldwide Available Variants Variant Model Best For 1 String SI32-PEL64R-2 Single-string solar arrays 2 String SI32-PEL64R-4 Dual-string solar arrays Specifications Model SI32-PEL64R-2 / SI32-PEL64R-4 Application Solar PV DC Isolation / PV Disconnect Rated Current 32A Published System Rating 600V DC Configuration 1 String / 2 String Poles 2 Pole / 4 Pole Wire Size 10 – 12 AWG Enclosure Rating IP66 / NEMA-4X Dimensions 180 × 98 × 107 mm (7.1" × 3.9" × 4.2") Switch Type Rotary DC Isolator OFF Position Lockable Operating Temperature -40°C to +45°C Canadian Approval cUL / cRUus, UL508, UL508i PV Disconnect Additional Global Approvals CE, TÜV, GOST, IEC CB Relevant Standards UL508i, UL508, IEC 60947-3, IEC 60364-7-712 Confidence for Larger Solar Systems As solar systems grow in size and voltage, proper DC switching becomes more critical. This isolator is designed to reliably interrupt higher-energy DC circuits where equipment choice matters. For installations that require inspection — or where long-term reliability matters — using certified, purpose-built equipment helps reduce risk and supports a cleaner, more professional installation. Simpler systems may still use more basic disconnect options, but for permanent installations, higher voltages, or larger solar arrays, using a certified isolator like this helps ensure consistent performance and long-term reliability. Suggested Uses Rooftop solar array isolation Ground-mount solar systems Off-grid cabins and homes RV, trailer, and mobile solar systems using higher-voltage arrays Disconnect between solar panels and inverter or charge controller Installations requiring electrical inspection Shop Circuit Protection Frequently Asked Can I use a standard AC disconnect instead? No. AC switches are not designed to interrupt DC current safely. DC arcs do not self-extinguish the same way AC arcs do, so a TRUE DC-rated isolator should be used for solar PV circuits. Is this suitable for inspected Canadian installations? Yes. This IMO isolator carries cUL / cRUus approval and is suitable for Canadian solar installations requiring electrical inspection and approval, provided it is installed correctly as part of a compliant system. Do I need an isolator if my inverter already has a PV switch? Often, yes. A dedicated PV isolator provides a clear and accessible disconnect point between the solar array and the equipment. Exact requirements depend on system design and local electrical code. Do I still need fuses or breakers with this isolator? Yes. An isolator switch is for disconnecting power; it is not overcurrent protection. Solar strings and conductors should still be fused or protected where required. Browse our fuse and circuit protection options. Should I choose the 1-string or 2-string version? Choose the 1-string version for a single PV string. Choose the 2-string version when you need to isolate two solar strings in one enclosure.