ASI NDB2-63C4-2 DIN Rail Circuit Breaker | 4 Amp, Two-Pole MCB, UL1077 Rated for Supplemental Protection

The ASI NDB2-63C4-2 is a high-performance DIN rail circuit breaker designed for supplemental protection in industrial and commercial electrical systems. Rated for 4 amps with a two-pole configuration, this UL1077-compliant MCB provides thermal-magnetic circuit protection for 480V AC and 125V DC circuits. The compact 36mm-wide footprint ensures efficient use of panel space, while DIN rail mounting allows for quick and easy installation.

Equipped with visual LED indication, this breaker clearly signals tripped status, improving troubleshooting efficiency. The C trip curve makes it ideal for typical inductive loads, offering reliable overload and short-circuit protection. Built with screw clamp terminals, it ensures secure wiring connections, while its 10kA interrupt capacity guarantees robust safety performance.


Key Features & Benefits:

🔹 4 Amp, Two-Pole Design – Provides reliable circuit protection for industrial and commercial applications.
🔹 UL1077 Supplemental Protection – Meets global safety standards for enhanced circuit reliability.
🔹 480V AC / 125V DC Rated – Versatile protection for both AC and DC systems.
🔹 Thermal-Magnetic MCB – Ensures responsive overload and short-circuit protection.
🔹 Compact 36mm Footprint – Saves valuable panel space in control systems.
🔹 Visual LED Tripped Indication – Allows quick identification of breaker status.
🔹 C Trip Curve – Ideal for handling typical inductive loads.
🔹 Screw Clamp Terminals – Enables secure and easy wiring connections.
🔹 10kA Interrupt Capacity – Ensures high-performance fault protection.
🔹 RoHS Compliant – Environmentally friendly and built to stringent safety standards.
Certifications & Standards:

✔ UL1077 – Recognized for supplemental protection applications.
✔ IEC60898-1, GB 10963.1 – Complies with global circuit breaker standards.
✔ TÜV, CE, CCC Certified – Internationally approved for quality and safety.
Applications:

🔹 Control Panels & Industrial Equipment – Ensures safe and reliable circuit protection.
🔹 Electrical Distribution Boards – Provides supplemental protection for various electrical systems.
🔹 Automation & Instrumentation Systems – Ideal for industrial automation applications.
🔹 Commercial & Residential Installations – Enhances electrical safety and system integrity.
Why Choose ASI?

🔹 Industry-Leading Quality – Manufactured to stringent standards for long-term reliability.
🔹 Space-Saving Design – Compact footprint optimizes panel layout and efficiency.
🔹 Easy Installation & Maintenance – DIN rail mounting and screw clamp terminals simplify setup.
🔹 Enhanced Protection & Safety – High interrupt capacity and LED indication improve usability.
🔹 Trusted by Professionals – ASI circuit breakers are widely used across various industries for dependable performance.

The ASI NDB2-63C4-2 DIN rail circuit breaker delivers cost-effective, robust, and efficient circuit protection, making it the ideal choice for industrial and commercial applications.