Installation And Connection; General; Installation - Mitsubishi Electric C Series Handling And Maintenance

3.6 Installation and connection

3.6.1 General

• Let a qualified person (electrician) carry out the electrical work.
• Before wiring, turn the upper circuit breaker to OFF. Make sure that no power is supplied to
prevent that the electrification can occur.

3.6.2 Installation

Install the breaker in normal environment. In case of any unusual environments such as high
temperature, high humidity, dust, corrosive gas, vibration and impact, the fire, the malfunc-
tion, and any operation failures can result.
Operating ambient temperature:
–10°C to 40°C
40°C
Use within
this range.
–10°C
Average temperature for 24 hours,
however, shall not be higher than
35°C.
CAUTION
Use care to avoid rain, drill
chips and other chips.
Malfunction and operation fail-
ure can result.
Avoid direct exposure to rain, oil,
dust and powder etc. Pay close
attention, in particular, to drill
chips made from steel plates
and other conductive wastes.
Avoid direct sunlight.
Temperature rise can lead to
malfunction.
CAUTION
CAUTION
Avoid humid air.
Relative humidity 85% max.
• Install the breakers in a place of low hu-
midity
• Keep the breakers so as not be dewed.
Don't put dust and chips
inside through the ex-
haust port.
Cover the exhaust port with the
sheet when under construction.
It is danger of poor electrifica-
tion and abnormal temperature
rise.
Use specified screws only.
Install the breakers to the cor-
rect position using the specified
screws (length and number of
pieces) or the specified fittings.
Screw
Avoid corrosive gas.
Ammonia
H S
2
Install the breakers in the environ-
ment of no corrosive gas.
H S 0.01ppm max. SO 0.05ppm
2 2
max. NH 0.25ppm max.
3
Don't disassemble!
Malfunction and operation fail-
ures can result.
Do not remove the compound
filled in the threads at the rear
surface and the rear cover.
Don't block up the
exhaust port.
Breaking performance may
possibly be lowered.
Avoid vibration and impact.
Use in a enclosure.
Be sure to use the breakers in
a casing and never use them
being exposed because arc is
generated.
Don't put a flammable
parts near the breaker.
It is in danger of fire when
breaking the circuit.
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