Ambient and installation conditions

• Altitude up to 2000m;
• Ambient medium temperature should be within -5℃ to +40℃ (+45℃ for marine products);
• It can withstand the effect of damp air;
• It can withstand the effect of salt fog or oil mist;
• It can withstand the effect of moulds;
• It can withstand the effect of nuclear radiation;
• The max inclination is 22.5℃.
• It still can work reliably when the ship subjects to normal vibration;
• It can still work reliably if the product subjects to the earthquake (4g).
• Places where the surrounding medium is free from explosion danger, and far away from gas or conductive dust that would erode the metal or destroy the insulation;
• Keep away from rain or snow.

Features

• Circuit breaker can be equipped with undervoltage release, shunt release, auxiliary contacts, alarm contacts, electric operating mechanism, rotary operating handle and other accessories.
• Circuit breaker has protection functions of overload long delay, short-circuit short delay and short-circuit instantaneous protection, the user can set the required protection characteristics (user only needs to operate the DIP switch for settings of protection function parameters).
• Circuit breaker has ground fault and thermal analog protection functions, pre-alarm indication over-current indication, load current indication, digital current analysis technology, and it can achieve a higher level of protection.

Tripping test port (TEST)

1 Tripping test input DC12V(+); 2 Tripping test input DC12V(-)

Panel adjustment knob as follows in turn:IR(A) Isd(×IR) Ii(×IR)
●IR: Overload long delay tripping setting current;
●Isd: Short-circuit short delay tripping setting current;
●Ii: Short -circuit instantaneous tripping setting curr

The rest parameters are set by factor y default, or set by remote communication, as follows:

●tR: Overload long delay setting time, factory default: 60s;
●tsd: Short-circuit short delay setting time, factory default: 0.1s;
●Ip: Overload pre-alarm setting current, factory default: 0.85*IR;