Schneider Electric HDA260401NN Molded Case Circuit Breaker

Schneider Electric's Square D HDA260401NN is a PowerPact H two-pole molded-case circuit breaker designed to protect 40 A circuits in panelboards and distribution panels. It is rated for 600 V AC (50/60 Hz) and 250 VDC, with a 14 kA interrupting capacity, enabling it to safely interrupt fault currents in typical commercial and light-industrial installations. The MCCB employs thermal-magnetic protection with current-limiting performance to trip quickly on overloads or short circuits. Terminations are I-Line with AB phase options, featuring line-lug load-terminal connections to simplify panelboard wiring. Built in an H-frame, this 2-pole device suits PowerPact H configurations where reliable protection is required for feeders and branch circuits. Common applications include protection of motors, lighting runs, and general power circuits within switchboards and panelboards that operate at up to 600 V. Verified listings from Schneider Electric’s distribution network show the HDA260401NN as a 40 A, 2-pole, 600 V AC MCCB with a 14 kA interrupt rating, confirming its role in robust overcurrent protection for 600 V systems.