6.3 Peripheral Equipment
6-15
Chap. 6 SELECTING PERIPHERAL EQUIPMENT
Table 6.5 Rated Current of Molded Case Circuit Breaker/Earth Leakage Circuit Breaker and
Magnetic Contactor
MCCB, ELCB
Rated current (A)
Magnetic contactor type
MC1 (for input circuit)
DC reactor (DCR) DC reactor (DCR)
Power
supply
voltage
Applicable
motor
rating
(kW)
Applicable
motor
rating
(HP)
Inverter type
w/ DCR w/o DCR w/ DCR w/o DCR
Magnetic
contactor type
MC2 (for output
circuit)
0.1
1/8 FRN0001C2S-2
0.2
1/4 FRN0002C2S-2
0.4
1/2 FRN0004C2S-2
5 (6)
0.75
1 FRN0006C2S-2
5 (6)
10
1.5
2 FRN0010C2S-2
15 (16)
2.2
3 FRN0012C2S-2
10
20 (25)
SC-05
3.7
5 FRN0020C2S-2
20 (25) 30 (35)
SC-05
SC-5-1
SC-05
5.5
7.5 FRN0025C2S-2
30 (35) 50 SC-4-0 SC-5-1 SC-4-0
7.5
10 FRN0033C2S-2
40 75 SC-5-1 SC-N1 SC-5-1
11
15 FRN0047C2S-2
50 100 SC-N1 SC-N2S SC-N1
Three-
phase
200 V
15
20 FRN0060C2S-2
75 125 SC-N2 SC-N3 SC-N2
0.4
1/2 FRN0002C2-4
0.75
1 FRN0004C2-4
5 (6)
1.5
2 FRN0005C2-4
10
2.2
3 FRN0007C2-4
5 (6)
15 (16)
3.7/4.0
5 FRN0011C2-4
10 20 (25)
5.5
7.5 FRN0013C2-4
15 (16) 30 (35)
SC-05
7.5
10 FRN0018C2-4
20 (25) 40
SC-05
SC-4-0
SC-05
11
15 FRN0024C2-4
30 (35) 50 SC-4-0 SC-4-0
Three-
phase
400 V
15
20 FRN0030C2-4
40 60 SC-5-1
SC-N1
SC-5-1
0.1
1/8 FRN0001C2-7
0.2
1/4 FRN0002C2-7
5 (6)
0.4
1/2 FRN0004C2-7
5 (6)
10
0.75
1 FRN0006C2-7
10 15 (16)
1.5
2 FRN0010C2-7
15 (16) 20 (25)
SC-05
Single-
phase
200 V
2.2
3 FRN0012C2-7
20 (25) 30 (35)
SC-05
SC-5-1
SC-05
0.1
1/8 FRN0001C2S-6U
5 (6)
0.2
1/4 FRN0002C2S-6U
5 (6)
10
0.4
1/2 FRN0003C2S-6U
10 15 (16)
Single-
phase
100 V
0.75
1 FRN0005C2S-6U
15 (16) 20 (25)
SC-05 SC-05 SC-05
- The above table lists the rated current of MCCBs and ELCBs to be used in the power control cabinet
with an internal temperature of lower than 50°C (122°F). The rated current is factored by a correction
coefficient of 0.85 as the MCCBs' and ELCBs' original rated current is specified when using them in an
ambient temperature of 40°C (104°F) or lower. Select an MCCB and/or ELCB suitable for the actual
short-circuit breaking capacity needed for your power systems.
- For the selection of the MC type, it is assumed that the 600V HIV (allowable ambient temperature:
75°C (167
°F)) wires for the power input/output of the inverter are used. If an MC type for another class
of wires is selected, the wire size suitable for the terminal size of both the inverter and the MC type
should be taken into account.
- Use ELCBs with overcurrent protection.
- To protect your power systems from secondary accidents caused by the broken inverter, use an MCCB
and/or ELCB with the rated current listed in the above table. Do not use an MCCB or ELCB with a
rating higher than that listed.
Notes: 1) A box () in the above table replaces A, C, E, or U depending on shipping destination.
2) A box (
■) in the above table replaces S (Basic type) or E (EMC filter built-in type) depending on the
enclosure.
3) Values in parentheses ( ) in the above table denote rated currents for the European version.
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