23 Years Factory Miniature Circuit Breaker FTBD-PV for Kazakhstan Manufacturer

Overview:



Technical data

Product illustration

Tripping characteristic

Exterior and dimensions

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Product illustration:

FTBD-PV

Technical Data

Model

FTBD-PV miniature circuit-breaker

Picture

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Number of poles

1P

2P

3P

4P

Rated operating voltage (V)

DC 3. 00

DC 600

DC 900

DC 1200

Rated current (A)

6、10、16、20、25、32、40、50、63
Rated short-circuit breaking capacity(KA)

10

10

7.5

7.5
Rated impulse withstand voltage Uimp(KV)

4

Mechanical and   electrical life:

20000

Protection rating

IP20

Installation

On DIN rail 35mm according to GB/T 19334-2003

Connection capacity:

Cross-section of conductors up to 25mm², Cross-section of busbar from 0.8-2mm²

Ambient temperature (°C)

-25°C ~ +45°C

Altitude (m)

≦2000m

Temperature derating

FTBD-PV Derating of load capability of MCBs
Ambient temperature T (°C)

10°C

20°C

30°C

40°C

50°C

60°C

70°C

In(A)

1.17 In 1.12 In 1.07 In

In

0.93 In 0.86 In 0.81 In

Tripping characteristic

qwerqw111

Connection capacity

121123

Exterior and dimensions

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A really easy and cool electronics project and lots of fun to play with once it finished.Its basically a laser tripwire but has a large application quotient in our everyday life’s! so all you teenagers and mad scientists go out there and make your rooms and labs intruder proof :D

PARTS REQUIRED:
• Breadboard / Perf-board
• Transistor- BC 109 (or any equivalent general purpose NPN transistor)
link to the datasheet of BC109 : http://alltransistors.com/pdfview.php?doc=bc107_bc108_bc109.pdf&dire=_philips
• Wires for connecting
• 9 volt battery
• 9 volt battery clip
• 10k ohm resistor
• LDR- mine was 8k ohm

HOW THE CIRCUIT WORKS:
This electronic circuit uses a transistor to detect light falling on the LDR (light dependent resistor) to activate or deactivate an alarm (or any kind of electronic component). The two resistors (the resistor and the LDR) are connected in series and the common point between them is connected to the base of the transistor, making a potential divider. It uses the property of “threshold voltage” of the transistor to trigger the alarm. This means that we can set a minimal amount of light intensity to trigger the alarm. I have set it to the intensity of sunlight as the minimal. This means that, it won’t trigger indoors in ambient light but only when there is a light of high intensity (like a laser). To set your own intensity or if you don’t a LDR that is working with the current specifications then just replace the resistor with a potentiometer (or other kind of variable resistor) of something like 30k ohm. Then keep changing the value until you get the desired result.
A more scientific method will be to see the reading (resistance) of the LDR in the desired light. Check the threshold voltage from the datasheet and then used the potential divider formula to calculate the required resistance of the 2nd resistor.

Note: The relay is only used for simplicity. The output can also be controlled by power transistors, to control any other device.

Please feel free to pose any questions that you might have. And make sure that you comment, rate and subscribe.
Thank you :D

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