ACB-I
3
A I R C I R C U I T B R E A K E R
2.3 Classication
2.3.1 Mounting type: withdrawable and xed.
2.3.2 Operation mode: motor-driven and manual operation (applicable to overhauling and
maintenance)
2.3.3 Number of poles: 3 poles and 4 poles.
2.3.4 Tripping categories : intelligent release,under voltage instantaneous( or delay)
release and shunt release.
2.3.5 Intelligent controller, which divided rationally into
two parts according to protection
features and auxiliary functions: 2M, 2H.
2.3.6 Under-voltage release works as self-priming with two kinds: instantaneous and delay.
2.4 Conditions of use
2.4.1 Ambient temperature: from -5℃ to +40℃
Note: （1）It has to point out while ordering if the lower limit of the working condition is -10℃ or-25℃ .
（2）It should negotiate with us if the temperatures higher than +4
0℃ or lower than -25℃ .
2.4.2 Up to an altitude of 2000m, breaker rated performances are unaected.
2.4.3 Atmospheric conditions: Relative humidity could not exceed 50% while temperature in the surrounding atmosphere
is +40℃ . High humidity is permissible in low temperature condition. The highest monthly average relative humidity
could be 90% when the lowest monthly average temperature is 25℃ . Notice
the sinveler on the products caused by
temperature variation.
2.4.4 Level of pollution: 3.
2.4.5 Mounting categories: Ⅳ mounting mode is available for breakers, whose rated voltage under 690V, the under-voltage
release coil and the primary coil of the power transformer. In addition, III mounting mode is for auxiliary and control
circuit.
2.4.6 Mounting conditions: Consult this instruction for inform
ation on how to install the breakers.
2. General information
2.1 Purpose
Shihlin's BA series of universal circuit breakers (hereafter refers to as breaker) are available in the circuit of AC 50Hz with rated
voltages of 400V, 690V and rated continuous current from 630A to 6300A.
The BA offers electric energy distribution and circuit protection, making it the ideal solution for current supply device
dam
ages which made by overload, under-voltage, short-circuit and single-phase earthing in distribution network. It is
suitable for intelligent and selective protection with accurate action to improve power distribution reliability and avoid
unnecessary power cuts.
2.2 Model and implication
Note: *is capacitance increase style of 3200A shell grade, 4000A just available for 3 poles.
BA
Number of poles
(4-4 poles,3-3 poles)
Breaker grade code
(H-high breaking)
Breaker shell grade rated current value
(2000,3200,4000*,6300)
Universal circuit breaker
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