Circuit breaker and fuse sizes, Wire connectors, Motor overload protection – Hitachi L300P User Manual
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Circuit Breaker
and Fuse Sizes
The inverter’s connections to input power must include UL Listed inverse time circuit breakers
with 600V rating, or UL Listed fuses as shown in the table below.
Wire Connectors
WARNING: Field wiring connections must
be made by a UL Listed and CSA Certified
ring lug terminal connector sized for the
wire gauge being used. The connector must
be fixed using the crimping tool specified by
the connector manufacturer.
Motor Overload
Protection
Hitachi L300P inverters provide solid state motor overload protection, which depends on the
proper setting of the following parameters:
• B012 “electronic overload protection”
• B212 “electronic overload protection, 2nd motor”
Set the rated current [Amperes] of the motor(s) with the above parameters. The setting range is
0.2 * rated current to 1.2 * rated current.
WARNING: When two or more motors are connected to the inverter, they cannot be protected
by the electronic overload protection. Install an external thermal relay on each motor.
Input
Voltage
Motor
Output
200V
Inverter Models,
L300P
Circuit
Breaker
(A)
Fuse
(A)
Input
Voltage
Motor
Output
400V
Inverter Models,
L300P
Circuit
Breaker
(A)
Fuse
(A)
HP
kW
HP
kW
200V
2
1.5
-015LFU2
10
10
400V
2
1.5
-015HFU2, HFE2
10
10
3
2.2
-022LFU2
15
15
3
2.2
-022HFU2, HFE2
10
10
5
3.7
-037LFU2
20
20
5
4.0
-040HFU2, HFE2
15
15
7.5
5.5
-055LFU2
30
30
7.5
5.5
-055HFU2, HFE2
15
15
10
7.5
-075LFU2
40
40
10
7.5
-075HFU2, HFE2
20
20
15
11
-110LFU2
60
60
15
11
-110HFU2, HFE2
30
30
20
15
-150LFU2
70
70
20
15
-150HFU2, HFE2
35
35
25
18.5
-185LFU2
90
90
25
18.5
-185HFU2, HFE2
50
50
30
22
-220LFU2
100
100
30
22
-220HFU2, HFE2
50
50
40
30
-300LFU2
150
150
40
30
-300HFU2, HFE2
70
70
50
37
-370LFU2
175
175
50
37
-370HFU2, HFE2
80
80
60
45
-450LFU2
200
200
60
45
-450HFU2, HFE2
100
100
75
55
-550LFU2
250
250
75
55
-550HFU2, HFE2
125
125
100
75
-750LFU2
300
300
100
75
-750HFU2, HFE2
150
150
125
90
-900HFU2, HFE2
—
200
150
110
-1100HFU2, HFE2
—
225
175
132
-1320HFU2, HFE2
—
300
Terminal (ring lug)
Cable support
Cable