
1-6
(5) Molded case circuit breaker (MCCB) or residual-current-operated protective device (RCD)/earth leakage circuit
breaker (ELCB)
Install a recommended MCCB or RCD/ELCB (with overcurrent protection) in the primary circuit of the inverter to
protect the wiring. Since using an MCCB or RCD/ELCB with a lager capacity than recommended ones breaks the
protective coordination of the power supply system, be sure to select recommended ones. Also select ones with
short-circuit breaking capacity suitable for the power source impedance.
Molded Case Circuit Breaker (MCCB) and Residual-Current-Operated Protective Device (RCD)/Earth Leakage
Circuit Breaker (ELCB)
Power
supply
voltage
Nominal
applied
motor
(HP)
Inverter type CT/VT
mode
Rated current of
MCCB and
RCD/ELCB (A)
Three
-
phase
Single-
phase
w/ DCR w/o
DCR
230 V
0.5
0.25
EQ7-20P5-C
CT/VT
5
5
1
0.5
EQ7-2001-C
10
2
1
EQ7-2002-C
10
15
3
1.5
EQ7-2003-C
20
5
3
EQ7-2005-C
20
30
7.5
EQ7-2007-C
30
50
EQ7-2010-C
CT
10
5
VT
40
75
EQ7-2015-C
CT
15
7.5
VT
50
100
EQ7-2020-C
CT
20
10
VT
75
125
EQ7-2025-C
CT
25
VT
100
150
EQ7-2030-C
CT
30
15
VT
175
EQ7-2040-C
CT
40
20
VT
150
200
EQ7-2050-C
CT
50
25
VT
175
250
EQ7-2060-C
CT
60
30
VT
200
300
EQ7-2075-C
CT
75
VT
250
350
EQ7-2100-C
CT
100
VT
350
--
40
EQ7-2125-C
CT
125
VT
400
EQ7-2150-C
CT
150
50
VT
350
Power
supply
voltage
Nominal
applied
motor
(HP)
Inverter type CT/VT
mode
Rated current of
MCCB and
RCD/ELCB (A)
Three
-
phase
Single-
phase
w/ DCR
w/o
DCR
460 V
0.5
0.25
EQ7-40P5-C
CT/VT
5
5
1
0.5
EQ7-4001-C
2
1
EQ7-4002-C
10
3
1.5
EQ7-4003-C
10
15
5
3
EQ7-4005-C
20
7.5
EQ7-4007-C
15
30
EQ7-4010-C
CT
10
VT
20
40
5
EQ7-4015-C
CT
15
VT
30
50
7.5
EQ7-4020-C
CT
20
VT
40
60
10
EQ7-4025-C
CT
25
VT
40
75
EQ7-4030-C
CT
30
15
VT
50
100
EQ7-4040-C
CT
40
20
VT
75
125
EQ7-4050-C
CT
50
25
VT
100
EQ7-4060-C
CT
60
30
VT
150
EQ7-4075-C
CT
75
VT
125
200
EQ7-4100-C
CT
100
40
VT
175
--
EQ7-4125-C
CT