Enclosed DC Switch IP67 Nema 4X 2 Pole 1 String 48A 600VDC Lockable Rotary Handle

Enclosed DC Switch IP67 Nema 4X 2 Pole 1 String 48A 600VDC Lockable Rotary Handle (SI40-PEL64R-2) Product Name Enclosed DC Switch IP67 NEMA 4X, 2 Pole, 1 String, 48A, 600VDC, Lockable Rotary Handle (SI40-PEL64R-2) Overview The SI40-PEL64R-2 is a TRUE DC solar isolator designed for photovoltaic (PV) systems. This enclosed DC switch offers high reliability, safety, and performance for isolating a single PV string. The unit features an IP67 / NEMA 4X outdoor-rated enclosure, lockable rotary handle, fast arc suppression, and operator-independent switching action. Model Identification Series: SI Series DC Solar Isolator Model: SI40-PEL64R-2 Poles: 2 Pole String Support: Single String Electrical Ratings Rated Operational Current: 48 A UL Current Rating: 40.0 A Rated Operational Voltage: 600 VDC Rated Insulation Voltage (Ui): 1500 VDC Utilisation Categories: DC-PV1, DC-PV2, DC-21A, DC-21B, DC-22B Switching Performance TRUE DC knife-edge rotary contacts with double break per pole. Independent spring-assisted switching mechanism ensures rapid contact separation, reducing arcing and increasing safety. Guaranteed fast arc suppression (typically ≤ 3 milliseconds). High short-circuit withstand capacity (product dependent, typically up to 2400 A). Handle & Locking Handle Type: Lockable Rotary Handle Lockable OFF Position: Yes (compliant with IEC 60947-1) Enclosure access is only possible when the switch is in OFF, preventing inadvertent access under live conditions. Environmental & Mechanical Protection Enclosure Protection: IP67 (dust tight, protection against immersion) NEMA Rating: NEMA 4X (weatherproof, corrosion resistance) Operating Temperature Range: -40°C to 45°C Outdoor-rated and suitable for harsh environmental conditions, including solar arrays exposed to sun, rain, and dust. Cable Connection Details Cable Size (Metric): 2.5 – 25 mm² Cable Size (AWG): 16 – 10 AWG Terminals designed for secure clamping and reliable DC connection at full rated current. Safety Features Polarity independent — no specific wiring direction required for DC input. Rotary handle with locking ensures secure maintenance isolation. Self-cleaning contact mechanism helps maintain contact integrity over long service life. Certifications & Compliance UL Certifications: UL 508I (PV disconnect switches), UL 60947-1, UL 60947-4-1 International Standards: IEC/EN 60947-1, IEC/EN 60947-3 Australia / New Zealand Approval: Energy Safe Victoria (ESV) Level 3 to AS 60947.3 with RCM marking Other Marks: CE, UKCA, RCM, RoHS Materials are rated for flame retardance (enclosure UL 94 V-0, handle UL 94 V-2). Typical Applications Residential and commercial solar PV installations String-level DC isolation between PV array and inverter Outdoor solar combiner boxes and DC isolation panels Industrial PV systems requiring robust, lockable DC disconnects Key Advantages Specifically designed for DC solar applications (not modified AC switches) High safety with fast arc extinction and independent switching action Superior environmental protection (IP67 / NEMA 4X) Lockable OFF rotary handle for secure maintenance isolation Wide temperature range and high short-circuit withstand Downloads DC Isolator Selection Guide String Box Selection Guide UL North America Selection Guide Technical Technical Datasheet