Best quality and factory Miniature circuit breaker-FTB3LE to Luxembourg Factories


Technical data

Product illustration

Tripping characteristic

Exterior and dimensions

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Technical Data

Model FTB3LE 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) CD 6, 10, 16, 20, 25, 32, 40, 50, 636,10,16,20,25,32,40

Rated residual operating current(mA)

AC A 3030,50

Rated residual non-operating current(mA)

ACA 1515,25
Residual current breaking time 30mA≦0.1s  250mA≦0.04s
Rated short-circuit breaking capacity (KA) 40~63A6~32A 1012
Rated residual current breaking capacity(KA) 4.5
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) 80 490 610 710 820

Exterior and dimensions


Number of poles width(mm) Modules
1 / 2 54 3
2 / 2 72 4
3 / 3 100 5.5
3 / 4 112.5 6.25
4 / 4 130.5 7.25

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Watch TDK-Lambda’s FAQ video to find out what is recommended for external fuses or circuit breakers for DRB DIN Rail power supply series.

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