3 Pole Isolator Switch DNH8(HGL) Series Load-Disconnector Switch

Mode:

DNH8(HGL) series

Rated Current:

63A, 100A, 160A , 250A, 630A, 1600A, 3150A

Pole:

3P, 4P

Rated Insulation Voltage Ui (V):

690V, 1000V

Dielectric Strength (V):

1890V, 2200V

Rated Impulse Withstand Voltage Uimp kV:

8kV, 12kV

Mechanical Life 400V:

1700, 1400, 800, 500

Electrical Life 400V:

300, 200, 100

Email:

[email protected]

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Description

DNH8(HGL) Series 3 Pole Isolation Switch Overview

3 Pole Isolator Switch Range of Application

The DNH8(HGL) series 3 pole isolator switch is specifically designed for circuits operating at AC 50Hz with a rated voltage of 400V and rated current up to 3150A. These switches are ideal for infrequently switching circuits on and off and providing reliable electrical isolation.

3 Pole Isolator Switch Feature

Instantaneous Release Mechanism: The innovative acceleration mechanism allows for rapid switching at speeds of 13.8 m/s. This feature operates independently of the handle speed, significantly enhancing the arc-extinguishing capability.
Durable Construction: The switch casing is made from glass fiber reinforced unsaturated polyester resin, offering excellent flame retardancy, dielectric properties, and impact resistance. This makes it suitable for various harsh environments, ensuring robust arc-extinguishing performance.
Self-Cleaning Contacts: The parallel double breakpoint contacts feature self-cleaning mechanisms, enhancing reliability.
Safety Features: Each contact has two separate contact faces, and a large isolation distance in the “0” position prevents misoperation. Additionally, three locks can be used simultaneously to secure the handle.

Read on what is isolator switch?

3 Pole Isolator Switch Model and Meaning

For example, the DNH8(HGL)-160A/4Z2JF11~380V model features:

- AC rated voltage: 380V
- Contracted heating current: 160A
- Rated current: 125A
- Four poles with outside cabinet operation and auxiliary contacts (1 normally open + 1 normally closed).

3 Pole Isolator Switch Operating Conditions

Temperature Range: The ambient air temperature should remain between -5 °C and +40 °C, with relative humidity not exceeding 95%.
Altitude: Installation altitude must not exceed 2000 meters.
Environment: The switch should be used in environments free from explosive hazards and where rain or snow does not intrude.

3 Pole Isolator Switch Meet Criterion

Standards Compliance

The DNH8(HGL) series meets international and national standards:

International Standards:

- IEC 60947-1: Low-voltage switching equipment and control equipment part I: General
- IEC 60947-3: Low-voltage switching equipment and control equipment, switches, isolators, isolation switch, and fuse combination appliances

National Standards:

- - GB/T 14048.1: Low-voltage switchgear and control equipment general provisions
  - GB/T 14048.3: Low-voltage switchgear control equipment, low-voltage switches, isolators, and isolator switch and fuse combination appliances

3 Pole Isolator Switch Technical Parameters

3 Pole Isolator Switches DNH8(HGL) series are designed for use in a variety of applications where circuit turn-on and turn-off or electrical isolation is required. They are available in seven different models, ranging from 63A to 3150A, and feature a modular design with three and four levels (three levels + neutral level for turn-on and turn-off).

Electrical isolation switch is also equipped with a front-side window that indicates the contact’s on/off state, and a rear observation window that allows for direct observation of the contact’s on-off state.

Rated current In (A)		63A		100A		160A		250A		630A
Contract heating current Ith (A)		40	63	80	100	125	160	200	250	315	400	500	630
Rated insulation voltage Ui (V) (Installation class IV)		690		690		1000		1000		1000
Dielectric strength (V)		1890		1890		2200		2200		2200
Rated impulse withstand voltage Uimp kV		8		8		12		12		12
Rated operating current le (A)	AC-21B	40	63	80	100	125	160	200	250	315	400	500	630
	AC-22B	40	63	80	100	125	160	200	250	315	400	500	630
	AC-23B	40	63	80	100	125	160	200	250	315	400	500	630
Motor power P (kW)	400V	18.5	25	40	40	63	80	100	132	160	220	280	315
Rated short-time endurance current lcw (kA Rms) 1s		2	2	2	2	6	6	9	9	12.6	12.6	12.6	12.6
Rated breaking capacity Icn (A Rms) AC-23B 400V		320	504	640	800	1000	1080	1600	2000	2520	3200	4000	5040
Rated switching capacity Icm (A Rms) AC-23B 400V		400	630	800	1000	1250	1600	2000	2500	3150	4000	5000	6300
Rated short-circuit switching capacity Icm (kA peak)		2.84	2.84	2.84	2.84	9.2	9.2	15.3	15.3	25.2	25.2	25.2	25.2
Mechanical life 400V		1700	1700	1700	1700	1400	1400	1400	1400	800	800	800	800
Electrical life 400V		300	300	300	300	200	200	200	200	200	200	200	200
Operating torque (Nm)		1.2	1.2	1.2	1.2	6.5	6.5	10	10	21	21	21	21
Weight (kg)	3P	0.4	0.4	0.55	0.55	1.2	1.2	2	2	4.4	4.4	4.9	4.9
	4P	0.42	0.42	0.62	0.62	1.4	1.4	2.35	2.35	5.5	5.5	6.3	6.3

Rated current In (A)		1600A				3150A
Contract heating current Ith (A)		1000	1250	1600	2000		2500	3150
Rated insulation voltage Ui (V) (Installation class IV)		1000			1000
Dielectric strength (V)		2200			2200
Rated impulse withstand voltage Uimp kV		12			12
Rated operating current le (A)	AC-21B	1000	1250	1600	2000		2500	3150
	AC-22B	/	/	/	/		/	/
	AC-23B	/	/	/	/		/	/
Motor power P (kW)	400V	560	560	560	710		710	710
Rated short-time endurance current lcw (kA Rms) 1s		30	30	30	50		50	50
Rated breaking capacity Icn (A Rms) AC-23B 400V		1500	1875	2400	3000		3750	4725
Rated switching capacity Icm (A Rms) AC-23B 400V		1500	1875	2400	3000		3750	4725
Rated short-circuit switching capacity Icm (kA peak)		63	63	63	105		105	105
Mechanical life 400V		500	500	500	500		500	500
Electrical life 400V		100	100	100	100		100	100
Operating torque (Nm)		37	37	37	50		50	50
Weight (kg)	3P	13.2	14.6	15.6	25.5		25.5	31
	4P	14.8	17.1	18	37.5		37.5	51.5

3 Pole Isolator Switch Operating Mode

3 Pole Load Disconnector

3 Pole Isolator Switch Outline and Installation Dimension (mm)

Specifications	Overall dimension																	Installation dimension
In	A	B	C	D	D1	E	φL	F	H	N	P	R	S	U	φX	Y	J		K
125A/3	140	135	121	15	93	71	5.5	50	10	75	36	20	25	115	9	24	120		65
125A/4	170	135	121	15	93	71	5.5	50	10	75	36	20	25	115	9	24	150		65
160A/3	140	135	121	15	93	71	5.5	50	10	75	36	20	25	115	9	24	120		65
160A/4	170	135	121	15	93	71	5.5	50	10	75	36	20	25	115	9	24	150		65
200A/3	180	170	144	20	104	84	5.5	79	15	105	50	25	30	140	11	25	160		90
200A/4	230	170	144	20	104	84	5.5	79	15	105	50	25	30	140	11	25	210		90
250A/3	180	170	144	20	104	84	5.5	79	15	105	50	25	30	140	11	25	160		90
250A/4	230	170	144	20	104	84	5.5	79	15	105	50	25	30	140	11	25	210		90
315A/3	230	240	188	30	137	115	7	95	20	135	65	32	40	206	11	37	210		140
315A/4	290	240	188	30	137	115	7	95	20	135	65	32	40	206	11	37	270		140
400A/3	230	240	188	30	137	115	7	95	20	135	65	32	40	206	11	37	210		140
400A/4	290	240	188	30	137	115	7	95	20	135	65	32	40	206	11	37	270		140
500A/3	230	260	188	30	137	115	7	95	20	135	65	40	50	220	13	37.5	210		140
500A/4	290	260	188	30	137	115	7	95	20	135	65	40	50	220	13	37.5	270		140
630A/3	230	260	188	30	137	115	7	95	20	135	65	40	50	220	13	37.5	210		140
630A/4	290	260	188	30	137	115	7	95	20	135	65	40	50	220	13	37.5	270		140

Specifications	Overall dimension											Installation dimension
In	A	B	C	D	D1	E	φL	F	H	N	P	J	K
1000A/3	378	308	174	120	60	200	35	20	16.5	49		353	175
1000A/4	493	310	235	120	60	200	35	20	16.5	48		471	174
1250A/3	378	336	174	120	80	200	40	35	16	49		353	175
1250A/4	493	338	235	120	80	200	40	35	16	48		471	174
1600A/3	378	336	174	120	80	200	40	35	16	50		353	175
1600A/4	493	338	235	120	80	200	40	35	16	49		471	174
2000A/3	378	445	174	120	80	200	40	40	20	103	50	353	220
2000A/4	493	447	235	120	80	200	40	40	20	104	50	471	220
2500A/3	378	445	174	120	80	200	40	40	20	103	65	353	220
2500A/4	493	447	235	120	80	200	40	40	20	104	65	471	220
3150A/3	378	492	174	120	120	200	50	50	21	77	65	353	220
3150A/4	493	494	235	120	120	200	50	50	21	78	65	471	220

The DNH8(HGL) series 3 phase isolator switch provides essential functionality for electrical isolation and circuit control in various applications. Available in models ranging from 63A to 3150A, this modular design incorporates three and four levels (including a neutral level for circuit operation). Additionally, it features a front-side window for indicating the contact state and a rear observation window for easy monitoring.

If you have any questions or require further information about our isolator switches, electrical isolation switch options, or other products, please do not hesitate to contact us!