TGM3E

Working environment conditions:

1.1 Ambient air temperature is -5ºC to +40ºC;

1.2 The relative air humidity at the installation site shall not exceed 50% at a maximum temperature of +40ºC. A higher

relative humidity is allowed at the lower temperature. For example, the relative humidity can reach 90% at 20ºC. Special

measures should be taken to deal with occasional condensation due to temperature changes;

1.3 Pollution class is 3;

1.4 The circuit breaker is required to withstand mechanical vibration with the frequency of 2Hz-11.2Hz, displacement of

±1mm and mechanical vibration with the frequency of 11.2Hz-100Hz and accelerated velocity of ±0.7g;

1.5 The installation category is III for main circuits of the circuit breaker and II for other auxiliary circuits and control

circuits;

1.6 The circuit breaker shall be applicable to electromagnetic environment B;

1.7 Hot and humid band type (TH type) circuit breaker can withstand the effect of damp air, salt mist, oil mist and mold;

1.8 The circuit breakers should be installed in a place without explosive hazard, conductive dust and corrosion against metal

and damage to insulation;

1.9 The circuit breaker shall be installed in the place without invasion of rain and snow;

1.10 Operation conditions:

1.10.1 The ambient air temperature shall be from -30ºC to +70ºC (derate when the temperature exceeds; see the technical

materials in the sample for details);

1.10.2 The characteristic shall not be affected when the altitude is 2,000m (derate when above 2,000 m; see the technical

materials in the sample for details);

1.10.3 The ambient air temperature for storage shall be -40ºC- +75ºC.

1.11 The protection grade of the product body is IP20

1.12 Cabinet door installation

1.12.1 With toggle handle: Protection grade is IP40.

1.12.2 With rotation handle: Protection grade is IP50.

1.12.3 With motor-operated mechanism: Protection grade is IP40