Ordinary Discount Miniature circuit breaker-FTB3 to Kyrgyzstan Factories
Overview:
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Product illustration:
Product Features
- A breaking capacity of 12kA up to 32A and 10kA between 40 to 63A.
- Current-limiting scheme: in the event of a short circuit, are able to limit the let-through current to 60%-70% of the rated current.
- The trip mechanism ensures perfect closure every time,thereby considerably improving the performance of these devices and extending their average lifetime.
-The arc extinguishing system: allows the short-circuit currents of very high value to be interrupted extremely rapidly, the remarkable opening speed of contacts opening and the structure of the arcing chamber contribute to extinguishing the arc in the shortest possible time, ensuring reliable protection of short-circuit.
- The internal contact position allows an exact information of the circuit-breaker status: “green”,open contacts;“red”,closed contacts,independently of the toggle position.
- Sealing/locking sealable with 1 mm wire, to prevent unwanted tripping.
- The supply lines of the protected circuit can be connected to either the upper or lower terminals of the circuit-breakers(reversibility of connections).
- The double terminal of these circuit-breakers enables simultaneous connection of cables and busbars.
Technical Data
| Breaking capacity(KA) | 40-63A | 10 | |
| 6-32A | 12 | ||
| Mechanical and electrical life: | 20,000 operation | ||
| Protection rating | IP20 | ||
| Installation | On symmetrical DIN rail 35mm /Panel Mounting | ||
| Connection capacity: | Cross-section of conductors up to 25mm², Cross-section of busbar from 0.8-2mm², reversibility of connections | ||
| Ambient temperature (°C) | -5°C ~ +40°C | ||
| Altitude (m) | not higher than 2000m | ||
| Relative air humidity | no more than 95% | ||
| Pollution degree | Ⅱ | ||
| Weight (g) | 116 | 234 352 472 | |
Tripping characteristic
Exterior and dimensions
Unit(mm)
|
Number of poles |
1P | 2P | 3P | 4P |
| a | 80±0.8 | |||
| b | 74.2±0.8 | 75.7±0.8 | ||
| c | 17.8±0.5 | 35.6±0.8 | 53.4±0.8 | 71.2±0.8 |
| d | 44±0.8 | |||
| e | 68.7±0.8 | 70.2±0.8 | ||
| f | 45±0.8 | |||
| g | 35.5±0.8 | |||
Wiring
Please refer to below table for the connection of wires with a cross section area
| Rated current In(A) | Nominal cross section area of copper wire(mm²) |
| 1～6 | 1 |
| 10 | 1.5 |
| 16,20 | 2.5 |
| 25 | 4 |
| 32 | 6 |
| 40,50 | 10 |
| 63 16 | |
Problem 1 Effect of Temperature Upon Resistance
2 Problem 1 Effect of Temperature Upon Resistance
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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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