Eaton QC3030HT Miniature Circuit Breaker 3Pole

The Eaton NSB QC3030HT is a 3-pole miniature circuit breaker (MCB) from Eaton’s NSB line, identified by the QC3030HT part number. It is rated for 30 A and 240 V, and supports 50/60 Hz three-phase power. As a 3P device, it interrupts all three supply lines when current exceeds its rating, helping prevent damage from overloads and short circuits in multi-phase installations. This MCB is designed for use in electrical panels and switchgear that require reliable overcurrent protection for 3-phase circuits at 30 A, aligning with typical Eaton panel configurations. The QC3030HT designation denotes a three-pole, 30-amp, 240-volt protection device suitable for 3-phase distribution tasks in commercial or industrial settings.