タイトルまたは説明

GA2 series moulded case circuit breakers (hereafter referred to as simply breakers) are one of the new type breakers which have been developed by the company using international advanced design and manufacturing technology. The rated insulation voltage of the breakers is **0V , suitable for turn-on or turn-off not frequently and starting a motor not frequently in the circuit of AC*0Hz/*0Hz, rated working voltage **0V or below (GA***3 is **0V)- rated working current up to **0A (GA****0 is motor protection-free). The breakers have overload, short-circuit and under voltage protection devices. so as to protect the circuit and the power equipment against damage.

The breakers. according to the rated maximal value o short circuit breaking ability (Icu), would be classified four kinds types C (basic type), L (typica1 type), M (second high breaking type) and H (high breaking type). The breakers are of the following

characteristics: compact size, high breaking ability, short arc-over distance (some of the 0 arc-over distance) and shake proof.

They also undergo the tests of nuclear industry conditions (1E grade) and ship conditions, and become the only product using in

nuclear industry base among the same products made in the country, further more become the ideal products applied on land or ships.

The breakers could be installed vertically (upright) or horizontally (transverse).

The breaker has disconnecting functions , its corresponding symbol is shown as

The breakers comply with the demands of the following standards:

IEC******1 and GB ****8.*****6 General rules

IEC******2 and GB ****8.*****8 circuit breakers

IEC********1 and GB ****8.4 Electromechanical

contactors and motor starters

IEC*******-l and GB l***8.5 Electrical equipments of

electromechanica1 control circuit.