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Masterpact™ NT and NW Universal Power Circuit Breakers

Masterpact™ Circuit Breakers

05/2014

Operating Conditions

See bulletin 0613IB1202, available in the Schneider Electric technical library, for information on normal

and adverse operating conditions.

Ambient Temperature:

Masterpact circuit breakers can operate under the following temperature conditions:

•

The electrical and mechanical characteristics are stipulated for an ambient temperature between

-13°F (-25°C) and 158°F (70°C).

Mechanical closing of the circuit breaker (by pushbutton) is possible down to -31°F (-35°C)

•

At altitudes +13,000 ft. (3900 m).

Masterpact circuit breakers have been tested for operation in industrial atmospheres. It is

recommended that the equipment be cooled or heated to the proper operating temperature and kept

free of excessive vibration and dust. Operation at temperatures above 104°F (40°C) may require

derating or overbussing the circuit breaker. See the appropriate instruction bulletin and page 17 of this

catalog for additional information.

Storage Temperature

Circuit breakers with trip units without LCD displays may be stored in the original packaging at

temperatures between -40°F (-40°C) and 185°F (85°C).

For circuit breakers with trip units with LCD displays, this range is -13°F (-25°C) to 185°F (85°C).

Altitude:

Masterpact circuit breakers are suitable for use at altitudes of 13,000 ft. (3900 m) and below. See

Table 15 on page 17 for Altitude correction factors.

Vibration:

Masterpact circuit breakers meet IEC 60068-2-6 Standards for vibration.

•

2 to 13.2 Hz and amplitude 0.039 in. (1 mm)

•

13.2 to 100 Hz constant acceleration 0.024 oz. (0.7 g)

Humidity:

Masterpact circuit breakers have been tested to the following:

•

IEC68-2-30—damp heat (temperature +55°C and relative humidity of 95%)

•

IEC 68-2-52 level 2—salt mist

The materials used in Masterpact NT and NW circuit breakers will not support the growth of fungus and

mold.

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Universal Remote Control MX-880Z - SPECS SHEET Informazioni Techniche Pagina 8