Best-Selling Miniature circuit breaker-FTM8-LE for Niger Factories

Overview:



Technical data

Product illustration

Tripping characteristic

Exterior and dimensions

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Product illustration:

8-LE
Technical Data

Model FTM8LE Residual current circuit-breaker
Number of poles IP+N,2P,3P,3P+N,4P
Rated frequency: AC 50/60Hz
Rated voltage (V) AC 230/400
 Rated current (A) C D 1,3,6,10,16,20,25,32,40,50,63 1,3,6,10,16,20,25,32,40,50,63
Rated residual operating current(mA) 30
Rated residual non-operating current(mA) 15
Residual current breaking time 30mA≦0.1s  250mA≦0.04s
Rated short-circuit breaking capacity(KA) 6(In≦40A); 4.5(In﹥40A)
Rated residual current breaking capacity(KA) 3
Mechanical & electrical life: 10,000 operations
Installation
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) -5°C ~ +40°C
Altitude (m) ≤2000m
Relative air humidity no more than 95%
pollution degree
installation condition Used in place without obvious shock and vibration
 Weight (g) ≦32A ﹥40A ≦32A ﹥40A ≦32A ﹥40A ≦32A ﹥40A ≦32A ﹥40A
216 240 320 343 445 473 468 518 585 63

Exterior and dimensions

8-LE111

 

 Number  of poles Rated current
<40A ≥40A
Width (mm) Modules Width(mm) Modules
1 /2 45 2.5 54 3
2/2 63 3.5 72 4
3/3 90 5 103.5 5.75
3 /4 99 5.5 117 6.5
4/4 117 6.5 135 7.5




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A look at what insulation testing is all about…I’m doing as I prepare to do a tutorial on insulation testing and reviews on various insulation testers.
In this video I give a practical demonstration on how insulation testers can find possible short circuits…where normal multimeter continuity testers can’t do this.
In the future tutorial on insulation testing I’ll cover:
* What is insulation testing / How to do insulation testing?
* Spot or short time insulation / resistance readings
* Time resistance tests
* Step voltage tests
* Ramp voltage tests
* PI / polarization Index tests
* DAR / Dielectric absorption ratio tests
* Current absorption
I’ll be looking at insulation testers from Fluke (1587, 1507), Megger, Mastech (MS5203)

Meetup details:

http://www.meetup.com/Charged-Conversation/events/143233012/

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Steps I took to upgrade the stock WFCO 8955 converter / battery charger in my RV to a better one: the Progressive Dynamics 4655.

The WFCO is famous for almost never switching into bulk mode (fast charging mode) no matter how low of a charge the batteries have. Because of this limitation, it’s impractical to dry camp – unless one plans on having to run their generator all day and night.

I haven’t gotten the new PD4655 to output 55 amps to the batteries just yet, but it’s already preforming MUCH better than the WFCO. I’m certain that once I upgrade the battery cable gauge from AWG #6 to AWG #3, I’ll get an even faster battery charge – in a matter of a few hours instead of 12+ hours. Even without upgrading the wiring, the PD4655 is already charging the batteries much faster.

NOTE: Tech support gave me instructions for fixing the problem with the green status LED not working. It turns out that the conductors in the 4-pin connector were in connected (at the factory) in the wrong sequence. I’ve posted the simple fix here: http://public.fotki.com/kevinkey/misc/

PD4655 WFCO 8900 PD4600 8955

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