27 Years Factory Miniature Circuit Breaker FTB2-63 Wholesale to Gabon

Overview:



Technical data

Product illustration

Tripping characteristic

Exterior and dimensions

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Product illustration

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Technical Data

Model FTB2-63 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

D

1,2,3,4, 6, 10, 16, 20, 25, 32, 40, 50, 63

6,10,16,20,25,32,40

Rated breaking capacity(KA) 6.5
Mechanical & electrical life: 20,000 operations
Protection rating IP20
Installation On DIN rail 35mm according to JB6525
Connection capacity: Cross-section of conductors up to 25mm2 , Cross-section of busbar from 0.8- 2mm2,reversibility of connections
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) 102 208 308 408

Product Feature

- These circuit breakers are intended for the protection of circuits against overloads and short circuits in residential, commercial and industrial premises;

- It covers the rating range from 6 to 63A with a uniform breaking capacity of 6.5 kA throughout;

- 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 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;

-The sensitivity and reliability of the trip mechanism ensures perfect closure every time,thereby considerably improving the performance of these devices and extending their average lifetime;

- 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.

 

Tripping characteristic

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Exterior and dimensions

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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




UPS failed while I was checking the batteries after the vendor finished battery maintenance. This was my last walk-through of the day. I checked the battery voltage and current at the UPS panel, inspected each battery for signs of leakage or post swelling. I was going to print a battery report when I noticed the battery monitor printer was near the end of the paper. I looked for a new roll of paper and just as I closed the door, the UPS failed releasing a fireball into the room. The failure tripped one of the three 3000 AMP main feeders, the battery breaker and the UPS input breaker. My first concern was all the smoke even though the fire sensors in this room are heat detecters. By the time I got the door open to vent the smoke and add light to the room, my phone was blowing up with alarms. Though I was quite busy for the next few hours, none of the computers in the center were affected.

I learned that the failure in the UPS was a phase-to-phase short on the input 480 VAC circuit, apparently through the diodes or SCRs in the input AC side.

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