The CHINT NB1-63H 25A MCB is designed to protect electrical circuits from overload and short-circuit faults, ensuring safety and operational reliability in low-voltage AC networks. With a 10kA breaking capacity and D-curve tripping, it is ideal for industrial and heavy-duty electrical systems. The D-curve characteristic allows the breaker to handle higher startup currents without nuisance tripping, making it suitable for demanding electrical loads. This MCB Supports top or bottom feed connections and mounts easily on a DIN rail, with terminals compatible with both cables and busbars. 

Technical Specification: 

• Standard: IEC/EN 60898-1
• Rated Voltage (Ue): AC 230/400~240/415 V
• Rated Insulation Voltage (Ui): 500 V
• Rated Current (In): 25 A, 1P
• Rated Short-Circuit Breaking Capacity (Icu): 10,000 A
• Tripping Characteristics: Type D (10–20 In) D curve protection for circuits which supply loads with high inrush current at the circuit closing (LV/LV transformers, breakdown lamps).
• Rated Frequency: 50/60 Hz
• Rated Impulse Withstand Voltage (Uimp): 6 kV
• Terminal Type: Cable / U-type busbar / Pin-type busbar
• Terminal Capacity: Up to 25 mm²
• Mounting: DIN-rail EN 60715 (35 mm)
• Connection: Top or bottom feed
• Auxiliary Accessories: Auxiliary contact, shunt release, under-voltage release, alarm contact, busbars. Click here
• Applicable for: Industrial distribution panels, residential consumer units, and control systems

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