factory Outlets for Miniature circuit breaker-FTM8 for Porto Manufacturers

Overview:



Technical data

Product illustration

Tripping characteristic

Exterior and dimensions

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Technical Data

Model
FTM8 Miniature circuit-breaker
Number of poles
IP 2P 3P 4P
Rated frequency:
AC 50/60Hz
Rated voltage (V) AC
230/400
 Rated current (A)
C
6, 10, 16, 20, 25, 32, 40, 50, 63
D
6, 10, 16, 20, 25, 32, 40, 50, 63
Rated breaking capacity(KA)
4.5(6~40A),  6(50~63A)
Mechanical & electrical life:
10,000 operations
protection rating
IP20
Installation
On DIN rail 35mm according to JB6525
Connection capacity:
Cross-section of conductors up to 25mm2
Tightening torque
2 Nm
Ambient temperature (C)
-5C ~ +40C
Altitude (m)
≤2000m
Relative air humidity
no more than 95%
pollution degree
installation condition
Used in place without obvious shock and vibration
Weight (g)
106
212
308
426

Tripping Characteristic

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Exterior And Dimensions

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Number of poles
b
e
1P
72
66
2P    3P     4P
75
69

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





Version 2 of my previous capacitor charger.
Improvements:
·Dual board makes it safer, with HV on top and LV at the bottom.
·More solid and easy to handle safely
·Hysteresis avoids excessive switching once charged
·Faster charge

In this version the transformer has been substituted by a big inductor, and the MOSFET by a high voltage NPN power transistor, an hysteresis loop has been added, this makes the circuit to shut down for a longer time when the voltage has been reached, instead of switching on and off due being constantly around the threshold.

How does it works?
This circuit has a 555 timer, which drives a push-pull circuit in order to drive the big power transistor, the first potentiometer controls the frequency of the 555, fluctuations in the current though the coil cause voltage spikes, which are rectified and sent into the capacitors by a single diode, this charges the capacitor.
An OP amp controls the charge, the OP amp compares the voltage at the capacitors thanks to a voltage divider with the reference voltage, set by the second potentiometer, this potentiometer controls the voltage limit, the limit can be set with around 0.5 to 1 volt of deviation. The maximum voltage is 400 volts, although it works best with capacitors from 100 to 300 volts.
The third potentiometer controls the hysteresis, when the hysteresis is high, the reference voltage drops by a significant amount when the capacitors are fully charged, this avoids the charger to start again until some seconds have passed and the voltage has dropped a bit, if the hysteresis is low the capacitors will be charged even with the smallest voltage drop, which can cause the circuit to run hot if left with the capacitors already charged.
The whole circuit uses around 12 volts 1-1.5 amps.

Previous version:

Since many people have asked for the schematic I redid the circuit, since the original files were accidentally destroyed, here’s the schematic with some annotations.

https://imgur.com/a/GweVx

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