Onesto 3P 6kA MCB C-Curve DIN

• The Onesto Triple Pole (3P) 6kA C-Curve Miniature Circuit Breaker (MCB) series is engineered to provide dependable protection for three-phase electrical circuits in a variety of residential, commercial, and light industrial applications.
• These MCBs are designed to safeguard against overcurrents and short circuits, ensuring the simultaneous disconnection of all three phases. Featuring a C-Curve tripping characteristic, they are well-suited for general-purpose loads including lighting, small motors, and other moderately inductive equipment.
• With a 6kA breaking capacity and compliance with IEC60898-1 standards, this range offers a reliable and safe solution for three-phase circuit protection.

Features

• Triple Pole (3P) configuration for comprehensive three-phase circuit protection.
• Rated short-circuit breaking capacity (Icu & Ics): 6kA.
• C-Curve tripping characteristic: Ideal for general purpose, resistive, and moderately inductive three-phase loads.
• Available current ratings: 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A.
• Thermo-magnetic trip mechanism for effective overload and short-circuit protection.
• Standard Compliance: IEC60898-1.
• Rated Operational Voltage (Ue): 415V AC (for 3P).
• Rated Insulation Voltage (Ui): 415V.
• Rated Impulse Withstand Voltage (Uimp): 4kV.
• Protection Index: IP20.
• Designed for easy DIN rail mounting.

Benefits

• Full Three-Phase Protection: Ensures simultaneous disconnection of all three phases under fault conditions, critical for protecting three-phase motors and equipment from damage due to phase loss or imbalance.
• Reliable Overcurrent Safety: 6kA breaking capacity effectively interrupts fault currents, protecting wiring, installations, and connected three-phase equipment.
• Versatile for General Loads: C-Curve characteristic is suitable for a wide range of common three-phase loads, minimizing nuisance tripping on circuits with moderate inrush currents.
• Dependable Dual Protection: The thermo-magnetic mechanism offers precise protection against both sustained thermal overloads and instantaneous magnetic trips during short circuits.
• Internationally Recognized Standards: Compliance with IEC60898-1 signifies adherence to global benchmarks for safety, quality, and performance.
• Broad Application Range: A comprehensive selection of current ratings allows for accurate matching to various three-phase circuit requirements up to 63A.
• Simplified Installation: Standard DIN rail compatibility facilitates quick and secure mounting in distribution boards and control panels.

In-Depth Technical Specifications

Ideal Use

• Protection of three-phase distribution circuits in residential, commercial, and light industrial buildings.
• Safeguarding small three-phase motors, pumps, fans, and HVAC equipment where a C-Curve characteristic is appropriate.
• Three-phase lighting circuits and general power outlets.
• Use in distribution boards and control panels for general three-phase loads up to 63A.
• Applications requiring a 6kA fault level protection for three-phase systems.

Tips

• Verify Load Type: Ensure the C-Curve is suitable for your specific three-phase load. For loads with higher inrush currents (e.g., larger motors), a D-Curve MCB may be more appropriate.
• Correct Sizing: Select the MCB's current rating based on the full load current of the three-phase equipment and the conductor size, adhering to local electrical codes.
• Professional Installation: Installation of three-phase protective devices must be performed by a qualified and licensed electrician familiar with three-phase systems and safety standards.
• Torque Settings: Ensure all terminal connections are tightened to the manufacturer's recommended torque values to prevent overheating, arcing, and potential hazards.
• Enclosure Suitability: While IP20 rated, these MCBs should be installed within an appropriate electrical enclosure to provide adequate protection against environmental factors like dust, moisture, or accidental contact, especially if a higher IP rating is needed for the specific installation environment.