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Naile Electric Co., Ltd. was jointly established by a group of electrical professionals with years of experience in technology development and management. It owns modern industrial plants and office spaces. As a modern technology-based enterprise, it specializes in the production and operation of lo
Naile Electric Co., Ltd. was jointly established by a group of electrical professionals with years of experience in technology development and management. It owns modern industrial plants and office spaces. As a modern technology-based enterprise, it specializes in the production and operation of lo
Naile Electric Co., Ltd. was jointly established by a group of electrical professionals with years of experience in technology development and management. It owns modern industrial plants and office spaces. As a modern technology-based enterprise, it specializes in the production and operation of lo
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NLL7-63/3P/AC
CHNAILE
Product Overview
Designed for demanding electrical environments, the CHNAILE NLL7-63 series 3-Pole Plug-in AC Miniature Circuit Breaker (MCB) is a premier solution for three-phase alternating current (AC) distribution. Rated for AC 240/415V and 50A, this industrial-grade breaker provides unmatched protection against dangerous overloads and severe short circuits. The innovative plug-in modular design drastically reduces labor costs and system downtime by allowing for instant module replacement without the need for complex rewiring.
Core Technical Specifications
| Brand: | CHNAILE |
| Model: | NLL7-63 |
| Number of Poles: | 3P (Three Phase) |
| Current Type: | AC (Alternating Current) |
| Rated Operating Voltage (Ue): | AC 240/415V~ |
| Rated Current (In): | 63A |
| Tripping Characteristic: | Curve C (Ideal for standard inductive loads) |
| Rated Short-circuit Breaking Capacity (Icu): | 10000A (10kA) |
| International Standard: | IEC60898-1 |
| Mounting Type: | Quick-swap Plug-in Base (Sold separately / Included) |

Premium Features & Benefits
Exceptional 10kA Breaking Capacity: Confidently interrupts high-fault currents up to 10,000 Amps, protecting downstream industrial equipment and preventing electrical fires.
Rapid Plug-in Technology: Engineered for maximum efficiency. Maintenance teams can safely extract and replace the breaker in seconds, making it ideal for continuous-production facilities.
Industrial-Grade Housing: Constructed from premium, flame-retardant, and impact-resistant materials (dark grey finish) to withstand harsh commercial and industrial environments.
Clear Visual Indication: Features an intuitive mechanical status window (Green for OFF / Red for ON), ensuring operators can verify circuit status at a glance safely.
Target Applications
This robust 3-Phase AC 415V breaker is the perfect protection component for:
Commercial Building Power Distribution Panels
Industrial Factory Automation & Motor Control Centers (MCC)
Large-scale HVAC (Heating, Ventilation, and Air Conditioning) Systems
Heavy Machinery and Three-Phase Equipment Protection
