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    50 amp 4 pole Miniature Circuit Breaker

    5 out of 5 based on 2 reviews | Write a review
    $93.85
    4 pole 50 amp miniature circuit breaker (MCB) for sale at an economical price. This mini circuit breaker working at a 50-60Hz rated frequency, is a compact and essential protective device widely used in electrical systems to safeguard circuits from damage caused by overcurrent, short circuits, and overload conditions.
    SKU: ATO-MCB-4P50
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    4 pole 50 amp miniature circuit breaker (MCB) operates at a rated frequency of 50-60Hz, which is commonly used in electrical systems to protect circuits from overcurrent, short circuits, and overload conditions, ensuring reliable performance and safety.

    4 Pole MCB Breaker Features

    • Rapid arc extinguishing system: This 4P mini circuit breaker eliminates line danger, can sense even small currents, and provides sensitive protection.
    • Thermosetting shell: 4 pole MCB breaker uses thermosetting plastic, which solidifies or has insoluble characteristics under heat or other conditions.
    • Sealed terminal: 50 amp miniature circuit breaker has a built-in sealed terminal, which is rust-proof and convenient, and meets certification standards.
    • Ergonomic handle: The handle is comfortable to operate, has high segmentation capacity, and is sensitive to action.

    Technical Data

    Model ATO-BY6-63-4P-50A
    Number of Poles 4P
    Rated Frequency 50-60Hz
    Frame Grade Current 63A
    Rated Current(In) 50A
    Rated Insulation Voltage 400V
    Rated Impulse Withstand Voltage (Uimp) 4000KV
    Rated Short-circuit Capacity(Inc) 3000-6000KA
    Producible Leakage Protection Type AC type
    Electrical Characteristics Short Circuit Protection, Overload Protection, Power Failure Protection
    Electrical Life 10000
    Mechanical Life 10000
    Protection Level IP20
    Comply with the Standard GB/T10963.1-2020 IEC60898-1


    4 Pole MCB Breaker Dimensions (Unit: mm)

    1 pole miniature circuit breaker dimension

    4 Pole MCB Breaker Wiring

    MCB miniature circuit breaker wiring

    How to Choose a Miniature Circuit Breaker for Home?

    Rated Current Copper Core Wire Load Power Applications
    1~5A <1mm ≤1100W Low-power Equipment
    6A ≥1mm ≤1320W Lighting
    10A ≥1.5mm ≤2200W Lighting
    16A ≥2.5mm ≤3520W Lighting, Sockets, 1~1.5 hp Air Conditioner
    20A ≥2.5mm ≤4400W Lighting, Sockets, 1~1.5 hp Air Conditioner
    25A ≥4mm ≤5500W Lighting, Sockets, 1~2.5 hp Air Conditioner
    32A ≥6mm ≤7040W Sockets, 3 hp Air Conditioner, 6 kW Water Heater
    40A ≥10mm ≤8800W 8 kW Instant Water Heater, Main Power Switch
    50A ≥10mm ≤11000W Main Power Switch
    63A ≥16mm ≤13200W Main Power Switch

    Tips: How do miniature circuit breakers protect circuits?

    Miniature circuit breakers (MCBs) protect electrical circuits by automatically interrupting the current flow when an overload or short circuit occurs. They use two primary mechanisms: a thermal trip and a magnetic trip.

    The thermal trip responds to prolonged overloads. Inside the mini circuit breaker, a bimetallic strip heats up as the current increases. If the current exceeds a safe limit for an extended period, the strip bends and triggers the trip mechanism, disconnecting the circuit to prevent overheating and potential fire hazards.

    The magnetic trip reacts to sudden surges, like those from short circuits. It uses an electromagnet that generates a magnetic field proportional to the current. If the current spikes abruptly, the magnetic force pulls a lever to trip the breaker instantly, stopping the flow to prevent equipment damage.

    MCBs are resettable and provide reliable, quick protection, making them essential for safeguarding electrical systems in homes, industries, and commercial buildings.

    Types of Circuit Breakers

    In this video, we'll take a closer look at the meaning behind these abbreviations and explain the types of circuit breakers they represent. By understanding the different types of circuit breakers on the market, you can make an informed decision and choose the right type for your specific requirements, thereby enhancing the protection of your electrical infrastructure.

    Isolator vs Circuit Breaker

    Although isolators and circuit breakers have similar functions in a circuit, they are two separate entities. This video explains you the difference between the two devices in terms of working, features, operation, affordability, etc. You can choose between them based on your specific requirements.

    Existing reviews of 50 amp 4 pole Miniature Circuit Breaker
    Nice for the price.
    I used this MCB as a breaker off of my battery solar bank. It is well made and easy to use. Works great for battery disconnect. Just what I needed and good price.
    From: Pruitt | Date: 30/10/2022
    Was this review helpful? Yes No (0/0)
    Good quality and great price.
    I bought this 50 amp 4 pole MCB breaker to fix my heat press machine. Replaced the old one with this easily and my machine works well now. Well made an easy to use. I will buy more from ATO.com.
    From: Mccurry | Date: 28/06/2022
    Was this review helpful? Yes No (0/0)
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