CNC NV821495 Miniature Circuit Breaker 2-Pole 16 Ampere Curve C 6kA Breaking Capacity

The CNC NV821495 miniature circuit breaker is a dependable 2-pole electrical protection device engineered to safeguard residential and commercial electrical installations against overloads and short circuits. Featuring a 16 Ampere rated current, a C-curve tripping characteristic, and a robust 6kA breaking capacity, this circuit breaker ensures stable performance in everyday electrical environments. Built with high-quality flame-retardant materials that offer high temperature and impact resistance, the unit also includes an anti-mistake contact terminal block for secure wiring. A clear contact position indicator displays red for closed and green for opened, allowing for quick visual checks of the circuit status during routine maintenance.

Advantages

This 2-pole circuit breaker provides comprehensive protection against both overcurrent overloads and sudden short circuits, enhancing overall electrical safety. The housing is constructed from flame-retardant materials capable of withstanding high temperatures and mechanical impacts, ensuring long-term durability. Maintenance is simplified through the visual contact position indicator that clearly shows whether the circuit is open or closed. Additionally, the device supports flexible installation options with connection possible from both top and bottom, and it accommodates cable or pin-type busbars up to 25mm² for versatile setup.

Suitable for

• Safeguarding residential distribution boards and consumer units
• Protecting commercial building electrical circuits
• Controlling and protecting 16A electrical lines with moderate inrush currents
• Installations requiring standard 35mm DIN rail mounting

This miniature circuit breaker may not be suitable for industrial environments requiring high breaking capacities exceeding 6kA, or for heavy machinery circuits with significantly higher rated currents than 16A. It is also not designed for outdoor use without a proper weatherproof enclosure due to its IP20 safety class.

Key specifications

• Number of contacts: 2-pole
• Rated current: 16 A
• Tripping curve: C
• Rated voltage: AC 400 V
• Rated breaking capacity: 6000 A
• Mechanical life: 20000 cycles
• Electrical life: 8000 cycles
• Safety class: IP20
• Dimensions: 85.5 x 78.8 x 36 mm

How to use

Mount the device securely onto a standard 35mm DIN rail conforming to EN 60715 using the integrated fast clip mechanism. Ensure the electrical supply is completely disconnected before wiring. Connect the supply and load cables or pin-type busbars into the top and bottom terminals, ensuring the wire cross-sectional area does not exceed 25mm². Tighten the connections securely to prevent loose contact, and utilize the anti-mistake contact terminal block to guarantee correct insertion. Once installed, switch the lever to the closed position, which will be indicated by the red marker, to restore power to the circuit.

What to consider before purchase

• Verify that your circuit requirements match the 16 Ampere rated current and 2-pole configuration
• Ensure the 6kA breaking capacity is sufficient for the prospective short-circuit current at the installation site
• Check that the operating environment temperature remains within the specified range of -5°C to +40°C
• Confirm compatibility with standard 35mm DIN rails and available distribution board space

Usage recommendations: Installation should be performed by a qualified electrician in accordance with local electrical regulations. Regularly inspect the circuit breaker and test the mechanical operation to ensure continued reliability and safety. Avoid exposing the device to moisture or dust exceeding its IP20 rating.