BX9B Miniature Circuit Breaker


BX9B Series circuit breaker is used in protection lighting or power distribution system from over-load and short-circuit, apply to the circuit of AC 50Hz/60Hz, rated voltage less than 415V. The product adopt high fire resistant and shockproof plastics, quality metal materials, which is neoteric in structure, light in weight, reliable in performance.
Products comply with IEC/EN60898-1.


Type Standard lEC/EN 60898-1






Electrical features

Rated current ln A 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63
Poles P 1, 2, 3, 4,1P+N,3P+N
Rated voltage Ue V 230/400
Insulation voltage Ui V 500
Rated frequency Hz 50/60
Rated breaking capacity A 10000,6000
Rated impulse withstand voltage(1.2/50)Uimp V 6000
Dielectric test voltage at ind. Freq. for 1min kV 2
Thermo-magnetic release characteristic B, C, D




Mechanical features

Electrical life t 10000
Mechanical life t 20000
Protection grade IP20
Reference temperature for setting of thermal element  


Ambient temperature

(with daily average≤35℃)



Storage temperature -25~+70






Terminal connection type Cable/Pin-type busbar/U-type bar

Terminal size top / bottom for cable

mm² 25
AWG 18/3

Terminal size top / bottom for busbar

mm² 25
AWG 18/3

Tightening torque

N*m 2.5
In-Ibs 22
Mounting On DIN rail EN 60715(35mm)by means of fast clip device
Connection From top and bottom



EBASEE BX9B Miniature Circuit Breaker Dimension

10 MB

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