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    25 amp 1 pole Miniature Circuit Breaker

    5 out of 5 based on 2 reviews | Write a review
    $53.99
    Single pole miniature circuit breaker (MCB) with a 25A current rating, featuring C-curve trip characteristics compliant with IEC standards. This mini circuit breaker offers 6 kA rated impulse withstand voltage for its micro design, providing reliable protection against overloads and short circuits in electrical conductors.
    SKU: ATO-MCB-1P25
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    A single pole miniature circuit breaker (MCB) is a compact mini safety switch that protects electrical circuits from overcurrent, preventing potential damage from overloads or short circuits. This 25 amp  micro circuit breaker is commonly used in residential and light commercial installations.

    Single Pole MCB Breaker Information

    • Rated Current: 25 amp
    • 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-NB8-631PC25
    Rated Current 25A
    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)

    25 amp 1 pole Miniature Circuit Breaker Dimensions

    Details

    1 Pole Miniature Circuit Breaker Details

    Tips: Miniature circuit breaker structure

    A miniature circuit breaker (MCB) consists of several key components that work together to provide circuit protection. The main parts include:

    • Housing: Made of high-strength, fire-resistant plastic to protect internal components.
    • Operating Mechanism: Includes a toggle switch or lever that allows manual switching of the circuit on or off.
    • Contacts: Metallic components that open and close the circuit. When the mini MCB trips, these contacts separate to interrupt the current flow.
    • Bimetallic Strip: A thermal element that bends when exposed to excessive current, triggering a trip in case of overload.
    • Magnetic Coil (Solenoid): Provides instant tripping during short circuits by generating a strong magnetic force.
    • Arc Chute: A series of plates that dissipate and extinguish the electrical arc formed when contacts open.

    These components ensure reliable circuit protection, preventing damage from overcurrent conditions in residential, commercial, and industrial applications.

    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 25 amp 1 pole Miniature Circuit Breaker
    Worked as expected and I would buy again!
    Needed miniature circuit breaker for solar rated at 25 amps. Running great so far. Good disconnect switch. Had 18 amps running through it no problems. This MCB worked as expected with good quality and I would buy again.
    From: Alaska | Date: 19/05/2022
    Was this review helpful? Yes No (0/0)
    A functional 25A circuit breaker
    The price was so cheap that I bought five circuit breakers at a time, and the circuit breaker in my home was aged, I changed a new one. The quality is very good, just installed, the operation is sensitive, and the circuit protection is very safe.
    From: Chuck | Date: 30/11/2018
    Was this review helpful? Yes No (0/0)
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