Molded-Case Circuit Breakers, Fuses, Magnetic Contactors - Mitsubishi Electric MR-J4W2-0303B6 Instruction Manual

11. OPTIONS AND PERIPHERAL EQUIPMENT

11.6 Molded-case circuit breakers, fuses, magnetic contactors

Always use one molded-case circuit breaker and one magnetic contactor with one servo amplifier. When
using a fuse instead of the molded-case circuit breaker, use the one having the specifications given in this
section.
When using a combination of the rotary servo motor, linear servo motor, or direct drive motor, select a
molded-case circuit breaker, a fuse or a magnetic contactor tentatively, assuming one type of the servo
motors are used for two or three axes. After the tentative selections are made for all types of the servo
motors, use the largest among all molded-case circuit breakers, fuses, or magnetic contactors.
(1) For main circuit power supply
CAUTION
(a) For MR-J4W2
Total output of
rotary servo
motors
300 W or less
From over 300
W to 600 W
From over 600
W to 1 kW
From over 1
kW to 2 kW
Note 1. When using the servo amplifier as an EC/EN/UL/CSA standard compliant product, refer to app. 4.
2. Use a magnetic contactor with an operation delay time (interval between current being applied to the coil until
closure of contacts) of 80 ms or less.
3. When not using the servo amplifier as an EC/EN/UL/CSA standard compliant product, molded-case circuit breaker
of 30 A frame can be used.
4. S-N18 can be used when auxiliary contact is not required.
5. A molded-case circuit breaker will not change to select regardless of use of a power factor improving AC reactor.
6. Use a molded-case circuit breaker having the operation characteristics equal to or higher than Mitsubishi Electric
general-purpose products.
To prevent the servo amplifier from smoke and a fire, select a molded-case circuit
breaker which shuts off with high speed.
Always use one molded-case circuit breaker and one magnetic contactor with one
servo amplifier.
Total
Total output of
continuous
direct drive
thrust of linear
motors
servo motors
150 N or less 100 W or less
From over 150 From over 100
N to 300 N W to 252 W
From over 300 From over 252
N to 720 N W to 838 W
Molded-case circuit breaker
(Note 5, 6)
Voltage
AC
Frame, rated current
[V]
50 A frame 5 A
(Note 3)
50 A frame 10 A
(Note 3)
240
50 A frame 15 A
(Note 3)
50 A frame 20 A
(Note 3)
11 - 29
Fuse
Magnetic
Voltage
(Note 1) Current
AC
contactor
Class [A]
[V]
15
20
T 300
20
30
(Note 2)
S-N10
S-T10
S-N20
(Note 4)
S-T21