Schneider Electric HDA260404NN Circuit Breaker

Schneider Electric's Square D PowerPact HDA260404 is a 40 A, two‑pole molded‑case circuit breaker designed for power distribution protection in commercial and light industrial applications. It is rated for 600 VAC and 250 VDC, with a thermal‑magnetic trip and an 80% continuous‑duty rating. The unit uses an I‑Line line‑side connection and a BC phase connection with load‑side terminals in the form of lugs, all within the PowerPact H frame. The interrupting capacity is 14 kA at 600 VAC (with higher short‑circuit current ratings at lower voltages, e.g., about 25 kA at 240 VAC and 18 kA at 480 VAC in compatible configurations). Load‑side terminals accept 14‑3/0 AWG aluminum or copper conductors. This MCCB protects feeders, motors, and other equipment up to 40 A per pole and is compatible with Square D/Schneider Electric distribution panels and the broader PowerPact family. The part number HDA260404 identifies the 2‑pole, 40 A, 600 V class device within the PowerPact H lineup.