Eaton NSB QC3070H miniature circuit breaker is a 3-pole (3P) protective device rated for 70 A at 240 V for 50/60 Hz 3-phase systems. This MCB provides overcurrent protection for three‑phase circuits in electrical distribution networks, helping prevent damage from overloads and short circuits. The QC3070H designation identifies the three‑phase, 70 A, 240 V rating within Eaton’s NSB line.
