Onesto 1P 10kA MCB D-Curve DIN

• The Onesto Single Pole 10kA Miniature Circuit Breaker (MCB) series offers robust and reliable protection for electrical circuits against overcurrents and short circuits.
• Designed for DIN rail mounting, these MCBs are suitable for a wide range of residential, commercial, and light industrial applications.
• With a high breaking capacity of 10kA and compliance with IEC60898-1 standards, they ensure safety and operational integrity in diverse electrical installations.
• Available in a comprehensive range of current ratings from 1A to 125A, and featuring C or D tripping curves, these MCBs provide versatile solutions for various load types.

Features

• Single Pole (1P) configuration
• Rated short-circuit breaking capacity (Icu & Ics): 10kA
• Available current ratings: 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A, 80A, 100A, 125A
• Tripping Curves: D
• Thermo-magnetic trip mechanism
• Standard Compliance: IEC60898-1
• Rated Operational Voltage (Ue): 240/415V AC
• Rated Insulation Voltage (Ui): 415V
• Rated Impulse Withstand Voltage (Uimp): 4kV
• Protection Index: IP20
• DIN rail mountable for easy installation

Benefits

• Enhanced Safety: 10kA breaking capacity reliably interrupts high fault currents, protecting equipment and preventing electrical hazards.
• Versatile Application: Wide range of current ratings and C/D trip curves cater to diverse loads, from lighting and general-purpose circuits (C-curve) to those with high inrush currents like motors and transformers (D-curve).
• Reliable Protection: Thermo-magnetic mechanism offers precise overload (thermal) and short-circuit (magnetic) protection.
• International Standards: Compliance with IEC60898-1 ensures quality, safety, and performance recognized globally.
• Easy Installation: Designed for standard DIN rail mounting, allowing for quick and convenient integration into distribution boards and enclosures.
• Durable and Long-Lasting: Built to withstand demanding electrical environments, ensuring longevity.
• Clear Indication: On/Off status indication on the toggle for easy visual assessment.

In-Depth Technical Specifications

Ideal Use

• Residential buildings for protecting lighting circuits, socket outlets, and individual appliances.
• Commercial installations such as offices, retail stores, and workshops for circuit protection in distribution panels.
• Light industrial applications for safeguarding control circuits, small motors, and machinery.
• Consumer units and distribution boards requiring reliable overcurrent and short-circuit protection.
• Systems where a 10kA fault current withstand capability is specified.

Tips

• Selection: Always choose an MCB with a current rating appropriate for the connected load and cable size to prevent nuisance tripping and ensure adequate protection. Select the tripping curve (C or D) based on the type of load (C for general/resistive, D for high inrush).
• Installation: Ensure installation is performed by a qualified electrician in accordance with local electrical codes and regulations. Securely fasten to the DIN rail and ensure proper torque on terminal connections.
• Compatibility: Verify compatibility with existing switchgear and enclosure dimensions.
• Testing: Periodically test the MCB's mechanical trip function (where applicable and safe to do so) as part of routine maintenance schedules.
• Environment: While IP20 offers protection against finger touch, ensure the MCB is installed within a suitable enclosure to provide higher overall IP rating against dust and moisture if required by the environment.