Item No.: LYM5-63

Key Specifications:

LYM5-63 Miniature Circuit Breaker is designed for overload and short-circuit protection in low-voltage AC distribution systems. It is suitable for residential, commercial, industrial control panels, distribution boards, and OEM electrical assemblies.

Rated Current
6A–63A

Breaking Capacity
6kA

Poles
1P / 2P / 3P / 4P

Mounting
35mm DIN Rail

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    AC Miniature Circuit Breaker

    LYM5-63 Miniature Circuit Breaker for Reliable AC Circuit Protection

    LYM5-63 MCB is used to protect low-voltage electrical circuits against overload and short-circuit faults. With 6kA breaking capacity, B/C/D trip curves, 1P to 4P configurations, and 35mm DIN rail mounting, it is suitable for distribution boards, control panels, residential systems, commercial buildings, and OEM electrical assemblies.

    Key Specifications

    Model
    LYM5-63

    Product Type
    Miniature Circuit Breaker

    Rated Current
    6A–63A

    Rated Voltage
    230 / 400V AC

    Breaking Capacity
    6kA

    Trip Curve
    B / C / D

    Poles
    1P / 2P / 3P / 4P

    Installation
    35mm DIN Rail

    Why Choose LYM5-63 MCB?

    Overload Protection

    Helps prevent cable and equipment damage caused by long-term overload current in AC distribution circuits.

    Short-Circuit Protection

    Quickly disconnects the circuit during short-circuit faults to improve system safety and reduce electrical risk.

    Flexible Selection

    Available in multiple current ratings, pole configurations, and B/C/D trip curves for different load types.

    OEM Supply Support

    Suitable for electrical wholesalers, panel builders, OEM brands, contractors, and distribution board manufacturers.

    Typical Applications

    Distribution Boards

    For branch circuit protection in residential and commercial distribution boxes.

    Control Panels

    For low-voltage panel protection in machine control and light industrial systems.

    Commercial Buildings

    For lighting circuits, socket circuits, and small power distribution systems.

    OEM Electrical Assemblies

    For manufacturers that need stable supply, private labeling, and batch production.

    How to Select the Right LYM5-63 MCB

    Selection Item
    Recommendation
    Current Rating
    Select according to cable size, load current, and local electrical design requirements.
    Pole Configuration
    Use 1P for single-line protection, 2P for single-phase L+N, and 3P/4P for three-phase systems.
    Trip Curve
    B curve for sensitive loads, C curve for general distribution, and D curve for higher inrush-current loads.
    Breaking Capacity
    Confirm that the short-circuit capacity of the installation point does not exceed the MCB rating.

    Note: Final model selection should be confirmed according to the electrical system design, installation environment, cable size, load type, and local standards.

    Built to Protect. Trusted to Last.

    LEEYEE supplies miniature circuit breakers and related low-voltage protection products for electrical distributors, panel builders, contractors, and OEM customers. We support stable batch supply, product matching, private label options, and export orders.

    FAQ

    What is the LYM5-63 MCB used for?

    It is used for overload and short-circuit protection in low-voltage AC circuits, such as distribution boards, control panels, and commercial electrical systems.

    What current ratings are available?

    Common ratings include 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, and 63A.

    What is the difference between B, C, and D curve?

    B curve is usually used for sensitive or low-inrush loads, C curve is common for general distribution, and D curve is used for loads with higher starting current.

    Can LEEYEE support OEM or private label orders?

    Yes. LEEYEE supports OEM supply for electrical distributors, panel builders, and brands that need stable batch production and export packaging.

    Is this product suitable for solar DC circuits?

    This LYM5-63 model is positioned as an AC miniature circuit breaker. For solar PV DC systems, please select a dedicated DC MCB according to system voltage and polarity requirements.

    Technical Data

    Rated Current: 6A,10A,16A,20A,25A,32A,40A,50A,63A
    Rated Voltage:230/400VAC(240/415)
    Rated Frequency: 50/60Hz
    Number of Pole: 1P,2P,3P,4P(1P+N,3P+N)
    Module size:18mm
    ICurve type: B,C,D Type
    Breakering capacity: 6000A
    Optimumoperating temperature: -5°C to 40°C
    Terminal Tightening torque: 5N-m
    Terminal Capacity(top): 25mm?
    Terminal Capacity(bottom):25mm?
    Electro-mechanical endurance:4000cycles
    Mounting: 35mm DinRail
    Suitable Busbar: PIN Busbar

    Compliance

    IEC60898-1
    EN60898-1

    Overall &Installation Dimensions

    The tripping characteristic curves

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    We offer a full range of customised services, working closely with our customers every step of the way, from concept design to final delivery.

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    Our team is always guided by the needs of our customers, providing professional consultation and support to ensure your satisfaction.

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