✅ 50439 – Schneider Electric IA80 Closed Toroid (VigiPacT / Vigilohm, 80 mm, 160 A) The Schneider Electric 50439 is the IA80 closed toroid A-type sensor, part of the VigiPacT and Vigilohm ranges, designed for residual current detection and earth fault monitoring in advanced protection systems. Featuring an 80 mm internal diameter and a rated current of 160 A, this sensor provides accurate detection of leakage currents in large cables or busbar systems. The closed-loop toroid design enhances signal stability and noise immunity, making it ideal for industrial and critical power applications. Engineered to work with devices like the RH99M relay, this sensor enables safe operation of low-voltage installations by helping prevent insulation faults, fire risks, and equipment damage. 🔧 Technical Specifications: Specification Details Part Number 50439 Model IA80 Brand Schneider Electric Sensor Type Closed Toroid A-Type Series VigiPacT / Vigilohm Internal Diameter 80 mm Rated Current 160 A Compatible Devices RH99M, VigiPacT insulation monitoring relays Construction Solid closed-loop toroid Mounting Panel or DIN rail (via bracket) Compliance Standards IEC 62020, IEC 61557 🌟 Key Features: ✅ Large 80 mm Diameter for busbars or multiple conductor arrangements. ✅ High Current Rating (160 A) for heavy-duty installations. ✅ Noise-Resistant Closed Design for accurate signal integrity. ✅ Seamless Compatibility with Schneider Electric leakage protection relays. ✅ Reliable Operation in harsh industrial environments. 🧰 Applications: Residual current monitoring in power distribution panels Substation and transformer fault detection Industrial feeders and control systems Mission-critical infrastructure and backup power systems Integration with RH99M and Vigilohm insulation monitoring systems