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300A 350A 400A MCCB Motor Short Circuit Protection Residential Circuit Breakers

    Buy cheap 300A 350A 400A MCCB Motor Short Circuit Protection Residential Circuit Breakers from wholesalers
     
    Buy cheap 300A 350A 400A MCCB Motor Short Circuit Protection Residential Circuit Breakers from wholesalers
    • Buy cheap 300A 350A 400A MCCB Motor Short Circuit Protection Residential Circuit Breakers from wholesalers

    300A 350A 400A MCCB Motor Short Circuit Protection Residential Circuit Breakers

    Ask Lasest Price
    Brand Name : KRIPAL
    Model Number : UKM30-400
    Certification : CE
    Price : negotiable
    Payment Terms : T/T, L/C
    Supply Ability : 30000 pcs per month
    Delivery Time : 20 days and depends on ordering quantity
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    300A 350A 400A MCCB Motor Short Circuit Protection Residential Circuit Breakers


    300A 350A 400A MCCB Motor Short Circuit Protection Residential Circuit Breakers

    The UKM30 series molded case circuit breaker is high-tech products in 21st century with advanced design, high performance, pleasant apprearance and delicate dimension.


    Description:

    UKM30 series molded case cicuit breaker is suitable for circuit AC 50Hz/60Hz, rated voltage up to AC660V, Rated operating current up to 250A. It features normal structure reliable performance, high breaking capacity, used for power distribution and protecting the circuit and electrical equipment
    against overload and short circuit. It complies with standard of IEC 60947-2.


    Specifications:

    TypeUKM30-400SUKM30-630SUKM30-800S
    Rated current In(A)250,300,350,400400,500,630630,700,800
    Number of poles343434
    Rated voltage Ui(V)AC690VAC690VAC690V
    Arc distance (mm)≤50≤50≤50
    Rated ultimate short-circuit breaking capitily Icu/Ics(KA)AC690V10/1010/1015/15
    AC400V70/7070/7070/70
    AC230V100/100100/100100/100
    Operational performance (times)ON1000500500
    OFF400025002500
    Dimensions (mm)a140185210280210280
    b257275275275
    c103103103103
    Weight(kg)5.57.510.914.211.415.7
    Rated operation frequency602020



    Protection Characteristic

    The thermodynamic release of a circuit breaker provides the feature of inverse time-delay, while the magnetic release is the instantaneous operation as shown on table 2(distribution circuit breaker) and table 3 (motor protection circuit breaker).

    Table 2

    Rated current ofrelease (A)

    Thermodynamic release( ambient temp )

    Operationalcurrent ofmagneticrelease (A)

    1.05In(cold state)
    Inoperative time(h)

    1.30In(heat state)
    Operative time(h)

    10≤In≤63

    ≥1

    < 1

    10In±20%

    225≤In≤630

    ≥2

    < 2

    100≤In≤800

    ≥2

    < 2

    5In±20%



    Table 3

    Rated current ofrelease (A)

    Thermodynamic release( ambient temp )

    Operationalcurrent ofmagneticrelease (A)

    1.0In(cold state)
    Inoperative time(h)

    1.20In(heat state)
    Operative time (h)

    1.50In(heat state)
    Operative time (h)

    7.2In(cold state)
    Operative time(h)

    10≤In≤225

    ≥2

    <2

    ≤4min
    ≤8min

    4s< Tp ≤10s
    6s< Tp ≤20s

    12In±20%

    225≤In≤630


    Benefits
    1.Reduce energy and operations costs
    2.Improve power quality, reliability and uptime
    3.Optimize equipment use

    Applications
    1.Building: Hotels, hospitals, offices and retalis
    2.Data center and Networks
    3.Industry: Mining and minerals, automotive, food and beverage and chemical industry
    4.Energy and infrastructures: Airports, oil and gas, water, electrical energy and marine


    Circuit breaker power loss:














































    Quality 300A 350A 400A MCCB Motor Short Circuit Protection Residential Circuit Breakers for sale
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