Selection Of No-Fuse Breaker And Contactor; Selection Of No-Fuse Breaker - Mitsubishi Electric MELDAS MDS-R Series Technical Specification And Instruction Manual

5-2 Selection of no-fuse breaker and contactor

Always select the no-fuse breaker and contactor properly, and install them to each power supply unit to
prevent disasters.

5-2-1 Selection of no-fuse breaker

Select the no-fuse breaker as in the expression below.
Unit type
MDS-R-
Recommended
breaker
(Mitsubishi Electric
Corp.: option part)
Rated current of the
recommended
breaker
Unit type
MDS-R-
Recommended
breaker
(Mitsubishi Electric
Corp.: option part)
Rated current of the
recommended
breaker
Option part: A breaker is not prepared as an NC unit accessory, so purchase the part from your dealer, etc.
CAUTION
5. Peripheral Devices
V1-20 V1-40 V1-60
NF30- NF30- NF30-
CS3P-15A CS3P-20A CS3P-30A
15A 20A
V2-2020 V2-4020 V2-4040
NF30- NF30- NF30-
CS3P-20A CS3P-30A CS3P-30A
20A 30A
1. If a no-fuse breaker is shared by several drive units, the no-fuse breaker may
not activate when a short-circuit fault occurs in a small capacity drive unit. This
is dangerous, so never share the breaker by several drive units. Always install
the no-fuse breaker for each drive unit.
2. If the control power (CN22) must be protected, select according to the section
"5-4 Selection of control power supply".
V1-80
NF50-
CW3P-40A
30A 40A
V2-6040 V2-6060
NF30- NF50-
CS3P-30A CW3P-40A
30A 30A 40A
5 - 4
V2-8040 V2-8060 V2-8080
NF50- NF50- NF50-
CW3P-40A CW3P-40A CW3P-40A
40A 40A 40A