CNC NV821914 Residual Current Breaker with Over-Current 2-Pole 63A C-Curve 30mA 6kA

The CNC NV821914 Residual Current Breaker with Over-Current is an essential electrical safety device designed to provide combined protection against overloads, short circuits, and earth leakage currents in residential and commercial installations. This 2-pole circuit breaker integrates advanced safety features, including an anti-mistake contact terminal block, a flame-retardant housing with high temperature and impact resistance, and a clear contact position indicator showing red for closed and green for opened. It ensures reliable performance in modern electrical distribution systems, protecting both equipment and users from electrical hazards.

Advantages

This residual current breaker offers dependable dual protection, combining overcurrent tripping with residual current detection in a single compact unit. Its robust construction utilizes flame-retardant materials that withstand high temperatures and mechanical impacts for long-term operational durability. The device features a practical contact position indicator for straightforward visual safety checks during maintenance. Additionally, the anti-mistake contact terminal block facilitates secure and reliable wiring, while support for both cable and pin-type busbar connections ensures flexible installation options.

Suitable for

• Residential electrical distribution boards and consumer units
• Commercial building sub-distribution systems
• Protecting individual circuits against overloads and short circuits
• Safeguarding users from earth leakage and electric shock risks

This device may not be suitable for industrial environments requiring high-ampere three-phase motor loads or systems operating outside the specified voltage and frequency ratings. It is designed for standard low-voltage installations and should not be used as a primary main breaker where higher breaking capacities exceeding six thousand amperes are required.

Key specifications

• Number of poles: 2
• Rated current: 63A
• Tripping curve: C-curve
• Rated voltage: AC 230V
• Residual operating sensitivity: 30mA
• Rated short-circuit breaking capacity: 6kA
• Rated frequency: 50/60 Hz
• Insulation voltage: 500V
• Mechanical life: 10,000 operations
• Electrical life: 4,000 operations
• Protection class: IP20
• Mounting type: Standard 35mm DIN rail EN 60715
• Operating temperature range: -25°C to +70°C

The device is designed for professional installation on a standard 35mm DIN rail inside a distribution enclosure. Wiring should be connected from the top terminals using compatible cables or pin-type busbars with a cross-sectional area of up to 35mm². Ensure the power supply is completely switched off before attempting any installation, wiring, or maintenance work on the electrical panel.

What to consider before purchase

• Verify that the 63A rated current matches the electrical load requirements of your circuit
• Confirm that a 2-pole configuration is suitable for your single-phase application
• Check the physical dimensions of 82 x 36 x 78 mm to ensure adequate space inside your distribution board
• Ensure compliance with local electrical installation standards and regulations

Usage recommendations: Always have this residual current breaker installed by a qualified electrician in accordance with local electrical codes. Periodically test the device functionality using the built-in test mechanism to ensure ongoing protection against electrical faults.