Onesto 1P+N 4.5kA MCB C-Curve DIN

• The ONESTO KCN Series 1 Pole + Neutral (1P+N) Miniature Circuit Breaker (MCB) is a high-quality protective device designed for safeguarding electrical circuits in residential, commercial, and light industrial applications.
• Engineered for DIN rail mounting, this MCB offers reliable protection against overcurrents (both overloads and short circuits) with a 4.5kA breaking capacity.
• It ensures enhanced safety by isolating both the phase and neutral conductors and is available in a range of current ratings from 6A to 32A to suit various circuit requirements.

Features

• 1 Pole + Neutral (1P+N) configuration

• Rated short-circuit breaking capacity (Icu / Ics) of 4.5kA

• Thermo-magnetic trip mechanism

• Type C tripping curve

• Available in multiple rated currents: 6A, 10A, 16A, 20A, 25A, 32A

• Complies with IEC/EN 60898-1 and IEC/EN 60947-2 standards

• Rated operational voltage (Ue) of up to 500V AC

• Rated insulation voltage (Ui) of 500V

• Rated impulse withstand voltage (Uimp) of 4kV

• Designed for 50/60Hz frequency

• IP20 protection rating

• Suitable for DIN rail mounting

Benefits

• Enhanced Safety: The 1P+N design ensures complete isolation of both the phase and neutral conductors, providing superior protection and safety during maintenance or in fault conditions.

• Reliable Circuit Protection: With a 4.5kA breaking capacity, the MCB effectively interrupts significant fault currents, preventing damage to connected equipment and wiring.

• Dual Protection Mechanism: The thermo-magnetic trip unit offers comprehensive protection against both thermal overloads (prolonged overcurrents) and magnetic short circuits (high instantaneous currents).

• Versatile Application: The Type C tripping curve makes it suitable for a wide range of applications, including general lighting circuits, socket outlets, and appliances with moderate inrush currents.

• Application Flexibility: The availability of various current ratings (6A to 32A) allows for precise matching to specific circuit protection needs.

• Assured Quality & Compliance: Adherence to international standards (IEC/EN 60898-1, IEC/EN 60947-2) guarantees product reliability, safety, and performance.

• Easy Installation: Designed for standard DIN rail mounting, allowing for quick and straightforward installation in distribution boards and enclosures.

• Durable Performance: Capable of operating at a rated frequency of 50/60Hz and withstanding impulse voltages up to 4kV, ensuring long-term reliability.

• Operator Safety: IP20 rating provides protection against accidental contact with live parts by fingers or objects larger than 12.5mm.

Technical Specifications

Ideal Use

• Residential electrical installations for lighting circuits, socket outlets, and general loads.
• Commercial buildings such as offices, retail shops, and small businesses.
• Light industrial applications requiring protection for control circuits or small machinery.
• Distribution boards and consumer units where individual circuit protection is necessary.
• Protection of circuits supplying appliances with moderate starting currents (e.g., fans, small pumps).

Tips

• Correct Amperage Selection: Always choose an MCB with a current rating that matches the cable size and the load of the circuit it is protecting. Consult electrical codes or a qualified electrician.
• Professional Installation: For safety and compliance, ensure installation is performed by a qualified electrician according to local regulations.
• Tripping Curve Suitability: The C-curve is generally suitable for most domestic and light commercial loads. For loads with high inrush currents (e.g., motors, transformers), a D-curve MCB might be more appropriate.
• Environmental Conditions: While rated for operation at 30°C, consider derating factors if the MCB is installed in environments with significantly higher ambient temperatures.
• Secure Connections: Ensure all terminal connections are tightened to the manufacturer's recommended torque to prevent overheating and potential hazards.
• Periodic Inspection: While MCBs are generally maintenance-free, periodic visual inspection of the installation for any signs of overheating or damage is recommended.