Square D 170R-501 Current Transformer Ratio 500 to 5

Square D by Schneider Electric 170R-501 current transformer provides a precise 500:5 ratio in a solid‑core, through‑conductor CT designed for high‑current sensing in switchgear and metering applications. It features a 4.25‑inch inside‑diameter window that passes a single conductor through the core, yielding a 5 A secondary when 500 A flows in the primary, ideal for relay and metering circuits. The unit is rated for up to 600 VAC on the secondary circuit, with a 10 kV basic insulation level (BIL) and a C10 relay class, ensuring compatibility with standard protective relays and power‑monitoring equipment. This model is part of Square D’s 170R family of one‑window current transformers, offering robust insulation and reliable current measurement for electrical distribution installations.