Hitachi SJ300-037HFE and Fuse Sizes, Circuit Breaker, Wire Connectors, Motor Overload Protection

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Circuit Breaker				The inverter’s connections to input power must include UL Listed inverse time circuit breakers
and Fuse Sizes				with 600V rating, or UL Listed fuses as shown in the table below.
Input	Motor			200V	Circuit	Fuse	Input	Motor		400V	Circuit	Fuse
	Output							Output
					Breaker						Breaker
Voltage				Inverter Model		(A)	Voltage			Inverter Model		(A)
	HP	kW			(A)			HP	kW		(A)
	1/2	0.4	SJ300-004LFU		10	10		1	0.75	SJ300-007HFU/E	10	10
	1	0.75	SJ300-007LFU		10	10		2	1.5	SJ300-015HFU/E	10	10
	2	1.5	SJ300-015LFU		10	10		3	2.2	SJ300-022HFU/E	10	10
	3	2.2	SJ300-022LFU		15	15		5	4.0	SJ300-040HFU/E	15	15
	5	3.7	SJ300-037LFU		20	20		7.5	5.5	SJ300-055HFU/E	15	15
	7.5	5.5	SJ300-055LFU		30	30		10	7.5	SJ300-075HFU/E	20	20
	10	7.5	SJ300-075LFU		40	40		15	11	SJ300-110HFU/E	30	30
200V
	15	11	SJ300-110LFU		60	60		20	15	SJ300-150HFU/E	40	40
	20	15	SJ300-150LFU		80	80		25	18.5	SJ300-185HFU/E	50	50
							400V
	25	18.5	SJ300-185LFU		100	100		30	22	SJ300-220HFU/E	60	60
	30	22	SJ300-220LFU		125	125		40	30	SJ300-300HFU/E	70	70
	40	30	SJ300-300LFU		150	150		50	37	SJ300-370HFU/E	90	90
	50	37	SJ300-370LFU		175	175		60	45	SJ300-450HFU/E	125	125
	60	45	SJ300-450LFU		225	225		75	55	SJ300-550HFU/E	125	125
	75	55	SJ300-550LFU		250	250		100	75	SJ300-750HFU/E	—	175
								125	90	SJ300-900HFU/E	—	200
								150	110	SJ300-110HFU/E	—	250
								175	132	SJ300-1320HFE	—	300
								200	150	SJ300-1500HFU	—	300

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.

Terminal (ring lug) Cable support

Cable

Motor Overload Protection

Hitachi SJ300 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”

•B312 “electronic overload protection, 3rd 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.