480v 400 Amp 3 Phase Disconnect Switch

Wenzhou XiFa Electric Power Equipment Co., Ltd is an expert factory to produce 480v 400 amp 3 phase disconnect switch. To guarantee a short lead time without delay, Wenzhou XiFa Electric Power Equipment Co., Ltd have the inventory of 400 amp 3 phase disconnect switch in storage. The large volume orders need to prepare from 7 to 15 working days from the order placed. Meanwhile, Wenzhou XiFa Electric Power Equipment Co., Ltd could customize a 400 amp 3 phase disconnect switch according to the demands of clients such as voltage level, usage environment, etc.

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Product Description

The 480v 400 amp 3 phase disconnect switch shall carry three phase AC 400 amp rated current in the position of closing. It has a simple and compact design on structure which widely applied in compact substation and electrical panel. The main feature of the 480v 400 amp 3 phase disconnect switch is no arc extinguishing capability and no load operation.

The 480v 400 amp 3 phase disconnect switch provides visible and reliable disconnection to ensure operator protection during maintenance. The function of 480v 400 amp 3 phase disconnect switch is to disconnect current in the environment of no loads. That is to say, the 480v 400 amp 3 phase disconnect switch shall be closing before circuit breaker, and be tripping after circuit breaker in the power distribution system.

480v 400 Amp 3 Phase Disconnect Switch

Production Parameter:

lth (A)	125A	160A	200A	250A	315A	400A	500A	630A	1000A	1250A	1600A	2000A	2500A	3150A	4000A
Ui(V)	750	750	750	750	1000	1000	1000	1000	1000	1000	1000	1000	1000	1000	1000
Dielectric strength (V)	5000	5000	5000	5000	8000	8000	8000	8000	10000	10000	10000	10000	10000	10000	10000
Uimp (KV)	8	8	8	8	12	12	12	12	12	12	12	12	12	12	12
Working Current le(A)
400V AC21B	125	160	200	250	315	400	500	630	1000	1250	1600	2000	2500	3150	4000
400V AC22B	125	160	200	250	315	400	500	630	1000	1250	1600	2000	2500	2500	2500
400V AC23B	125	160	200	250	315	340	425	500	800	1000	1250	1250	1250	1250	1250
750V AC21B	125	160	160	200	315	400	400	500	1000	1000	1600	2000	2500	3150	4000
750V AC22B	125	160	160	160	315	315	315	315	800	800	800	2000	2000	2000	2000
750V AC23B	80	80	100	125	125	125	125	125	400	400	500	1000	1000	1000	1000
220V DC21	125	160	200	250	315	400	500	630
220V DC22	125	160	200	250	315	400	400	500
220V DC23	125	125	160	200
440V DC21	100	125	160	200	315	400	400	500
440V DC22	100	125	160	200	315	400	400	500
440V DC23	100	125	160	200
Motor Power(KW)
400V	63	80	100	132	160	220	280	315	560	560	560	710	710	710	710
750V	75	75	90	110	185	185	185	185	475	475	475	750	750	750	750
lcw (KA Rms,0.1S/1.0S)	20/10	20/10	30/12	30/12	45/20	45/20	50/25	50/25	90/50	90/50	90/50	90/50	90/50	90/50	90/50
Making and Breaking Capacity
lcn(A Rms) AC23B 400V	1250	1250	2000	2000	3150	4000	4000	4000	10000	10000	10000	10000	10000	10000	10000
lcm(A Rms) AC23B 400V	1000	1000	1600	1600	2500	3200	3200	3200	8000	8000	8000	8000	8000	8000	8000
lcm(KA Peak Value)	12	12	17	17	30	30	40	40	70	70	70	70	70	70	70
Mechanical Life (times)	10000	10000	10000	10000	5500	5500	5500	5500	4000	4000	3000	2500	2500	2500	2500
Electrical Life (times)
Ue=660V Rated Current le
COS∮＝0.95 AC21B	1500	1500	1500	1500	750	750	750	750	600	600	450	400	400	350	350
COS∮＝0.65 AC22B	1000	1000	1000	1000	500	500	500	500	400	400	300	200	200	200	200
COS∮＝0.35 AC23B	500	500	500	500	250	250	250	250	200	200	150	100	100	100	100
Weight (kg)
3 poles	1	1	2	2	3.5	3.5	4	4	10.5	10.5	16	31	31	42	90
4 poles	1.5	1.5	2.5	2.5	4	4	4.5	4.5	13	13	20	40	40	49	102
Operating Torque(Nm)	6.5	6.5	10	10	14.5	14.5	14.5	14.5	27	27	27	60	60	60	110

Front Wring Type

Rated Current（A）	Frame Size（mm)					Intallation Size（mm)
Rated Current（A）	A	B	E	F	M	C	D	φ
200	190	170	70	155	M8	70	140	φ7
400	220	220	80	170	M12	80	190	φ7
630	270	300	100	170	M16	100	140	φ9
1000	320	320	120	195	2-M12	120	140	φ10
1600	360	360	130	215	4-M12	130	140	φ11

480v 400 Amp 3 Phase Disconnect Switch

Rare Wring Type

Rated Current（A）	Frame Size（mm)					Intallation Size（mm)
Rated Current（A）	A	B	E	F	M	C	D	φ
200	190	170	70	205	M8	70	160	φ7
400	220	220	80	220	M12	80	190	φ7
630	270	300	100	220	M16	100	220	φ9
1000	340	310	120	300	2-M12	120	260	φ10
1600	380	340	130	300	4-M12	130	300	φ11

Production FAQ:

Q: What is the main purpose of a 480v 400 amp 3 phase disconnect switch?

A: A 480v 400 amp 3 phase disconnect switch provides a safe way to isolate power before servicing electrical equipment. At 480 volts and 400 amps, this type of switch is typically used in commercial and industrial applications to cut power to motors, HVAC systems, machinery, or distribution panels.

Q: How do I know if 400 amps is the right rating for my application?

A: You should size the switch based on the maximum current your system requires. A 400A switch is suitable when the connected load or panel is designed to handle currents up to 400 amps. Always check both continuous operating current and short-circuit rating requirements before selecting.

Q: What’s the difference between fusible and non-fusible disconnect switches?

A: Fusible: Includes fuses for overcurrent protection. This provides both a disconnecting means and circuit protection.

Non-fusible: Only isolates power but does not provide protection. Choose fusible if you need built-in protection; non-fusible if protection is already handled by upstream breakers.

Hot Tags: Disconnect Switch Manufacturer, 400 Amp Disconnect Switch, 3 Phase Electrical Switch

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