Mounting Direction - Mitsubishi Electric C Series Handling And Maintenance

3.6.4 Mounting direction

(1) For the following models, pay attention to attaching position as overcurrent tripping is of fHydraulic-
magnetic type and the tripping characteristic varies depending on mounting position. It is recom-
mendable to use them attached vertically.
Moulded-case circuit
breaker
Earth leakage circuit
breaker
Moulded-case circuit breaker
for motor protection
Circuit protector
100%
107%
ON
ON
ON
ON
110%
ON
ON
ON
ON
107%
100%
Rate of change of rated
current by mounting angle
(For NF, NV, MB)
(2) Thermal-magnetic type and electronic type are not affected by mounting direction.
NF30-CS, NF50-SS (1P), NF63-CW
NF32-SW, NF63-SW, NF63-HW, NF50-SWU
NV30-CS, NV50-CSA
NV63-CW
NV32-SW, NV63-SW, NV63-HW
MB30-CS, MB32-SW, MB50-CW, MB50-SW
CP30-BA, CP-B, CP-S
115%
93%
90% 120%
93%
115%
Type
100%
95%
ON
ON
ON
ON
ON
ON
ON
ON
95%
100%
Rate of change of rated
current by mounting angle
(For CP)
90%
Mounting position which can
assure operation characteristic
for hydraulic-magnetic type
Vertical
surface
ON
OFF
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