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    4 amp 1 pole Miniature Circuit Breaker

    5 out of 5 based on 1 reviews | Write a review
    $57.49
    4 amp single pole miniature circuit breaker with standard ratings of 6kA rated short-circuit breaking capacity at 230/400V AC single voltage, standard 35 mm DIN rail mounting. The mini MCB circuit breaker has a c curve trip characteristic to suit most applications.
    SKU: ATO-MCB-1P04
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Single pole miniature circuit breaker is ideal for the protection of circuits in industrial, commercial, and residential sectors, and ensures the following functions: Protection against short-circuit and overload currents, isolation, and protection of persons against indirect contact.

    Single Pole MCB Breaker Information

    • Rated Current: 4 A
    • Rated Voltage: 230/400V AC, 50Hz
    • Number of poles: 1 pole
    • 6 kA rated short-circuit breaking capacity
    • Compliant with IEC standard
    • C curve trip characteristic
    • With overload protection and short circuit protection function

    Technical Data

    Model ATO-NB8-631PC04
    Rated Current 4A
    Rated Voltage 230/400V
    Frequency 50Hz
    Number of Poles 1P
    Mechanical Life 20000 Times
    Electrical Life 10000 Times
    Rated Short-Circuit Breaking Capacity 6000A
    Operating Short-Circuit Breaking Capacity 6000A
    Rated Impulse Withstand Voltage (1.2/50) 6kV
    Dielectric Test Voltage 2000V (50Hz, 1 min)
    Heat & Humidity Resistance 28 Cycles
    Vibration Resistance No Obvious Vibration and Impact
    Terminal Block Terminal Block Type Pillar Terminal Block
    Min. Terminal Size Acceptability 1mm2
    Max. Terminal Size Acceptability 25mm2
    Standard Connection Torque 2 N.m
    Max. Tolerable Torque 2.5 N.m
    Wire Insertion Depth 13mm
    Reference Temperature 30℃
    Operating Temperature -35℃~+70℃
    Storage Temperature 35℃~+85℃
    Applicable Altitude 2000m
    Tripping Mode Thermal Magnetic Trip
    Electromagnetic Tripping Type Type C (5In-10In)
    Shell Flame Retardant Grade V0
    Wire Entry Method Both Upper and Lower
    Installation Method TH35-7.5 Standard Rail
    Protection Level Direct Installation IP20B
    Installed in the Distribution Box IP40B


    Single Pole MCB Breaker Dimension (Unit: mm)

    4 amp 1 pole Miniature Circuit Breaker Dimensions

    Details

    1 pole Miniature Circuit Breaker Details

    Tips: How to maintain the single pole miniature circuit breaker?

    Single pole miniature circuit breakers (MCBs) are crucial for protecting electrical circuits from overloads and short circuits. Regular maintenance ensures their reliability and safety. Here are some essential steps for mini circuit breaker maintenance:

    • Visual Inspection: Regularly inspect the MCB for signs of damage, wear, or overheating. Look for burn marks, discoloration, or any physical defects.
    • Testing Functionality: Periodically test the micro circuit breaker by pressing its test button (if equipped). This ensures the breaker trips as expected during an overload or short circuit.
    • Tightening Connections: Loose connections can cause arcing or overheating. Check the terminal screws for tightness and secure any loose connections.
    • Cleaning: Dust and debris can interfere with the MCB’s function. Use a dry cloth or compressed air to clean the breaker and surrounding areas.

    Replace Worn Components: If the MCB switch is tripping frequently or showing signs of wear, replace it to maintain safety standards.

    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 4 amp 1 pole Miniature Circuit Breaker
    Awesome miniature circuit breaker!
    This is a must-have for your home electrical work bench. Works great! Easy mount in a DIN rail enclosure and are great for disconnecting solar panels. Well worth the price and high quality. Awesome MCB!
    From: Stanley | Date: 26/05/2022
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