Filter
Top Products
11. OPTIONS AND PERIPHERAL EQUIPMENT
11 - 73
11.10 Molded-case circuit breakers, fuses, magnetic contactors
CAUTION
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.
(1) For main circuit power supply
When using a fuse instead of the molded-case circuit breaker, use the one having the specifications
given in this section.
Servo amplifier
Molded-case circuit breaker (Note 1, 4) Fuse
Magnetic
contactor
(Note 2)
Frame, rated current
Voltage AC
[V]
Class Current [A]
Voltage AC
[V]
Power factor
improving reactor is
not used
Power factor
improving reactor is
used
MR-J4-10B(-RJ) 30 A frame 5 A 30 A frame 5 A
240 T
10
300
S-N10
S-T10
MR-J4-20B(-RJ) 30 A frame 5 A 30 A frame 5 A
MR-J4-40B(-RJ) 30 A frame 10 A 30 A frame 5 A 15
MR-J4-60B(-RJ) 30 A frame 15 A 30 A frame 10 A
20
MR-J4-70B(-RJ) 30 A frame 15 A 30 A frame 10 A
MR-J4-100B(-RJ) 30 A frame 15 A 30 A frame 10 A
MR-J4-200B(-RJ) 30 A frame 20 A 30 A frame 20 A 40
S-N20
(Note 3)
S-T21
MR-J4-350B(-RJ) 30 A frame 30 A 30 A frame 30 A 70
S-N20
S-T21
MR-J4-500B(-RJ) 50 A frame 50 A 50 A frame 50 A 125 S-N35
MR-J4-700B(-RJ) 100 A frame 75 A 60 A frame 60 A 150
S-N50
MR-J4-11KB(-RJ) 100 A frame 100 A 100 A frame 100 A 200
MR-J4-15KB(-RJ) 125 A frame 125 A 125 A frame 125 A 250 S-N65
MR-J4-22KB(-RJ) 225 A frame 175 A 225 A frame 175 A 350 S-N95
MR-J4-60B4(-RJ) 30 A frame 5 A 30 A frame 5 A
480 T
10
600
S-N10
S-T10
MR-J4-100B4(-RJ) 30 A frame 10 A 30 A frame 5 A 15
MR-J4-200B4(-RJ) 30 A frame 15 A 30 A frame 10 A 25
MR-J4-350B4(-RJ) 30 A frame 20 A 30 A frame 15 A 35 S-N20
(Note 3)
S-T21
MR-J4-500B4(-RJ) 30 A frame 20 A 30 A frame 20 A 50
MR-J4-700B4(-RJ) 30 A frame 30 A 30 A frame 30 A 65
S-N20
S-T21
MR-J4-11KB4(-RJ) 50 A frame 50 A 50 A frame 50 A 100 S-N25
MR-J4-15KB4(-RJ) 60 A frame 60 A 60 A frame 60 A 150 S-N35
MR-J4-22KB4(-RJ) 100 A frame 100 A 100 A frame 100 A 175 S-N50
MR-J4-10B1(-RJ) 30 A frame 5 A 30 A frame 5 A
240 T
10
300
S-N10
S-T10
MR-J4-20B1(-RJ) 30 A frame 10 A 30 A frame 10 A 15
MR-J4-40B1(-RJ) 30 A frame 15 A 30 A frame 10 A 20
Note 1. When having the servo amplifier comply with the IEC/EN/UL/CSA standard, refer to appendix 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. S-N18 can be used when auxiliary contact is not required.
4. Use a molded-case circuit breaker which has the same or more operation characteristics than our lineup.