Enclosed DC Switch IP67 Nema 4X 2 Pole 1 String 55A 800VDC Lockable Rotary Handle

Product Name Enclosed DC Switch IP67 NEMA 4X, 2 Pole, 1 String, 55A, 800VDC, Lockable Rotary Handle (SI55-PEL64R-2) Overview The SI55-PEL64R-2 is a high-performance enclosed DC switch designed specifically for photovoltaic (PV) applications. It provides safe and reliable DC isolation for a single PV string and is suitable for outdoor installation thanks to its IP67 and NEMA 4X rated enclosure. The switch features a lockable rotary handle, TRUE DC switching technology, and fast arc suppression to ensure maximum safety and long service life. Product Identification Series: SI Series DC Solar Isolator Model: SI55-PEL64R-2 Switch Type: TRUE DC Switch-Disconnector String Capacity: 1 String Electrical Ratings Rated Current (IEC): 55 A UL Current Rating: 55.00 A Rated Operational Voltage: 800 VDC Rated Insulation Voltage (Ui): 1500 VDC Number of Poles: 2P Utilisation Categories: DC-PV1, DC-PV2, DC-21A, DC-21B, DC-22B Mechanical & Installation Details Handle Type: Lockable Lever / Rotary Handle Lockable: Yes Mounting: Enclosed Polarity: Polarity Independent Environmental Protection Ingress Protection: IP67 NEMA Rating: NEMA 4X Operating Temperature Range: -40°C to 45°C Outdoor Use: Suitable for harsh environmental conditions Cable Terminations Cable Size (Metric): 2.5 – 25 mm² Cable Size (AWG): 16 – 10 AWG Switching & Safety Features TRUE DC knife-edge contacts ensure safe and reliable DC switching. Operator-independent spring mechanism provides rapid contact separation. Fast arc suppression (typically ≤ 3 ms) minimizes arc energy. Double break per pole improves electrical endurance and safety. Self-cleaning contact action enhances long-term reliability. Handle & Locking Safety The lockable rotary handle allows secure locking in the OFF position to prevent accidental operation during maintenance. Enclosure access is only possible when the switch is in the OFF position, ensuring operator safety. Compliance & Certifications UL Standards: UL 508I, UL 60947-1, UL 60947-4-1 IEC / EN Standards: IEC 60947-1, IEC 60947-3 Australia / New Zealand: AS 60947.3, ESV Level 3 Approval (RCM) Other Compliance: CE, UKCA, RoHS Typical Applications Residential solar PV systems Commercial and industrial PV installations PV string-level DC isolation Inverter DC input isolation Outdoor DC isolator mounting near PV arrays or inverters Key Benefits Designed specifically for DC solar applications High current and voltage capacity for modern PV systems Excellent environmental protection with IP67 and NEMA 4X ratings Lockable handle ensures safe maintenance isolation Reliable performance in extreme temperatures and outdoor conditions Downloads DC Isolator Selection Guide String Box Selection Guide UL North America Selection Guide Technical Technical Datasheet Certifications CE Declaration UL Certification RCM Certification