Himel HDB3w-125 / HDB9H High-Capacity Miniature Circuit Breakers (MCB) Series | 3-Pole, 10kA, C Curve, 10A to 125A Range

Himel HDB3w-125 / HDB9H 3-Pole 10kA C Curve Miniature Circuit Breaker (MCB) series represents the industrial-grade boundary of modular circuit protection, specifically engineered for high-current single-phase and three-phase power distribution networks. Covering extended heavy-duty current ratings of 10A - 125A, this high-capacity series bridges the gap between standard modular breakers and heavy molded-case breakers. With an elevated short-circuit breaking capacity of 10,000A (10kA) certified under international standard IEC/EN 60947-2, it ensures secure fault isolation close to main step-down transformers.

Operating under the world-class engineering governance of the Schneider Electric group, Himel has optimized the HDB3w-125 3P range with reinforced internal arc-chutes and enhanced copper terminal lugs to handle continuous, high-thermal load demands without failure. The robust C-Curve trip profile is precision-calibrated to endure higher transient inductive inrush currents safely—preventing nuisance tripping while ensuring an immediate, simultaneous mechanical trip across all three phases during actual fault states. Mountable directly onto standard DIN rails, this heavy-duty series provides clean panel uniform aesthetics, high mechanical endurance, and elite system reliability for aggressive infrastructure projects throughout Egypt.

Comprehensive Range Applications:

• 80A Models: Purpose-built for protecting large commercial ventilation networks, elevator machine groups, and medium-sized industrial motors.

• 100A Models: The standard engineering specification for sub-panel main incoming protection in administrative complexes and commercial floors.

• 125A Models: Maximum capacity modular protection engineered for heavy three-phase water pumps, manufacturing machinery lines, and central industrial chillers.

Key Technical Advantages:

• 80A-125A High-Current Frame: Delivers extreme amperage handling within a space-saving modular DIN-rail format.

• 10kA High-Fault Interruption: Safely clears high-intensity short-circuit faults in heavy commercial and industrial grids.

• Simultaneous 3-Pole Disconnection: Eradicates the hazard of partial phase power looping (single-phasing) to protect expensive three-phase equipment.

• Schneider Quality Framework: Co-engineered to rigorous global manufacturing standards to assure reliable thermal-magnetic tripping properties.