Free sample for Moulded case circuit breaker-FTM2-DC for Boston Factory

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Technical data

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Tripping characteristic

Exterior and dimensions

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Frame size Inm(A): 160 250 400 630
Rated current (A): 20,25,32,40,50,63,80,100,125,160, 160,180,200,225,250 250,315,350,400 400,500,630
Poles: 3 4 3 4 3 4 3 4
Rated voltage (V) AC: DC250,DC500,DC750,DC1000
Rated insulationvoltage(V): 1000 1000 1000 1000
Rated impulse withstand
voltage Uimp(KV):
800 800 800 800
Breaking Capacity: S S S S
Ultimate short-circuit capacity Icu (KA) DC250V: 30 / 30 / 30 / 30 /
DC500V: 25 / 25 / 25 / 25 /
DC750V: 15 15 15 20 15 20 15 20
DC1000V: / 10 / 10 / 10 / 10
Service short-circuit capacity
Ics (KA)
DC250V: 75%Icu / 75%Icu / 75%Icu / 75%Icu /
DC500V: 75%Icu 75%Icu 75%Icu 75%Icu 75%Icu 75%Icu 75%Icu 75%Icu
DC750V: 75%Icu 75%Icu 75%Icu 75%Icu 75%Icu 75%Icu 75%Icu 75%Icu
DC1000V: / 75%Icu / 75%Icu / 75%Icu / 75%Icu
operating performance Electrical life: 3000 3000 1000 1000
Mechanical life: 10000 10000 5000 5000
Arcing distance(mm) No more than 50 No more than 50 No more than 50 No more than 50
Class A
L(mm) 155 165 257 275
W(mm) 90 120 105 140 140 184 210 280
H1(mm) 68.5 69.5 95 95
H(mm) 100 105 154 154




  • Test CB chống giật bản Draf



    Problem Determining the Resistance of a Load

    2 Problem Determining the Resistance of a Load in URDU

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    contents :

    Chapter 14: Current Electricity (55 videos)

    14:1: Electric Current
    1. Introduction to Electric Current
    2. More on Introduction to Electric Current
    3. Problem-Introduction to Electric Current
    4. Problem 1-Measurement of Current

    14.2: Conventional current
    1. Conventional Current

    14.3: Potential Difference and emf
    1. Potential Difference
    2. Problem-Potential Difference
    3. Problem 1-Measurement of Potential Difference
    4. Problem- Potential Divider
    5. Electromotive Force
    6. Problem-Electromotive Force
    7. Problem- Measurement of e.m.f

    14.4: Ohm’s Law
    1. Ohms Law

    14.5: Resistance
    1. Resistance
    2. Problem-Determining the Resistance of a Load
    3. Problem- Resistor

    14.6: Specific Resistance of Resistivity
    1. Specific Resistance
    2. Problem 1-Specific Resistance
    3. Problem 2-Specific Resistance

    14.7: Effect of Temperature on Resistance
    1. Effect of Temperature on Resistance
    2. Problem 1-Effect of Temperature Upon Resistance
    3. Problem 2-Effect of Temperature Upon Resistance

    14.8: Combinations of Resistors
    1. Series combination of Resistors
    2. Problem 1-Series Combination of Resistors
    3. Parallel Combination to Resistors
    4. More on Parallel Combination to Resistors
    5. Problem 2-Series Combination of Resistors
    6. Problem-Current in Series Circuit
    7. Problem 1-Parallel combination to Resistors
    8. Problem 2-Parallel combination to Resistors
    9. Problem 3-Parallel combination to Resistors
    10. Problem 4-Parallel combination to Resistors

    14.9: Conductors and Insulators
    1. Conductors and Insulators

    14.10: The I-V Characteristics for OHMIC and Non OHMIC Conductors
    1. Characteristics of Ohmic and Non Ohmic Conductors
    2. Problem-Characteristics of Ohmic and Non Ohmic Conductors

    14.11: Electrical Power and joule Law
    1. Problem 1-Electrical Energy and Joules law
    2. Electrical Energy and Joules law
    3. Problem 2-Electrical Energy and Joules law
    4. Electric Power
    5. Kilowatt Hour
    6. Problem 1-Electric Power
    7. Problem 2-Electric Power

    14.12: Direct Current (D.C) and Alternating Current (A.C)
    1. Direct Current
    2. Alternating Current

    14.13: Circuit Components
    1. Circuit Components

    14.14: Measuring Instruments
    1. Introduction to Galvanometer
    2. Introduction to Ammeter
    3. Introduction to Voltmeter

    14.15: Series and Parallel Circuit
    1. Series combination of Resistors
    2. Parallel Combination to Resistors

    14.16: House Circuit
    1. House Wiring

    14.17: Electricity Hazards
    1. Insulation Damage and Damp Conditions
    2. Introduction to Fuse
    3. Introduction to Circuit Breaker
    4. Introduction to Earth Wire

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