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Scope of Application

TXHGL Load Isolation Switch (also known as load disconnector) is developed by the company using European advanced technology, is the ideal replacement products in similar products. HGL Load Isolation Switch is widely used in the distribution system and automation systems of the construction, power, petrochemical and other industries. Load disconnector has modular design structure, flexible combinations, use glass fiber reinforced unsaturated polyester resin to produce casing, with high dielectric properties, protection and reliable operational safety. Operating mechanism is the acceleration mechanism of the spring storage and instantaneous release, with the double breakpoint contact structure of instantaneous making and breaking. Unrelated to the operating handle speed, greatly improving the electrical and mechanical performance. A variety of structure and operation mode, with the window of direct observation of the contact state, the operations inside or outside of cabinet, there are positive and side operation, a board wiring. Switch has nice, novel and concise appearance, small size, full-features, is the ideal choice for similar products,
TXHGL load isolation switch for the industrial power distribution equipment of AC 50Hz, rated voltage of 660V, DC voltage of 440V, the conventional heating current of 3200A, used for infrequent making and breaking of circuit and electrical isolation, switch of more than 1000A is only used for electrical isolation, widely used in the distribution system and automation systems of the construction, power, petrochemical and other industries.


HGLC side load isolation switch, increases a side operating mechanism HGL on the basis of HGL load disconnector, used for making and breaking of circuits and electrical isolation.


HGLZ switching load isolation switch is composed of two HGL load isolation switch of up-down stacking or left-right paralleling, for breaking of two-way power supply or conversion of two load equipment and security isolation. Load disconnector meets IEC60947-3, GBI4048.3 standards. Load disconnector has nice, novel and concise appearance, small size, full-features, is the best choice for similar products

Model and meaning


Selection example

HGL-160A / 4Z2JF11 ~ 380V In 125A switching load disconnector, left-right arrangement. AC rated voltage of 380V, conventional heating current of 160A,rated current of 125A, 4-pole, operation outside the cabinet, auxiliary contacts, 1 normally open +1 normally closed.

Product features

■ Accelerator of instantaneous release of the spring energy storage achieve fast making or breaking (13.8m/s), unrelated to the operating handle speed, greatly improves arc extinguishing capacity
■ Casing made of glass fiber reinforced unsaturated polyester resin has good flame-retardant properties, dielectric properties, carbonization resistance and impact resistance
■ Parallel double-breakpoint contacts have self-cleaning function
■ All contacts have two separate contact faces. Isolation distance is long, in the "0" position, three locks lock handle at the same time, reliable to avoid misoperation.

Meet the standards

International standard

IEC60947-1 "Low-voltage switchgear and controlgear—Part 1:General rules"
IEC60947-1 "Low-voltage switchgear and controlgear Low-voltage switches disconnectors switch-disconnectors and fuse-combination units"

National standard

GB/T14048.1 "Low-voltage switchgear and controlgear—Part 1:General rules"
GB/T14048.3 "Low-voltage switchgear and controlgear Low-voltage switches disconnectors switch-disconnectors and fuse-combination units"

Normal working conditions and installation conditions

■ Ambient air temperature is -5℃~+40℃, relative humidity is less than 95%.
■ The altitude of the installation site is not more than 2000 meters.
■ No explosive hazardous media.
■ No invasion of rain and snow in the environment.
Note: If the ambient air temperature is expected to be higher than +40℃ or lower than -5℃, the user should explain to the manufacturer.

Main technical parameters

TXHGL-63~3150A Load isolation switch

■ TXHGL load isolation switch of 63A ~ 3150A is divided into seven specifications, is the basis of modular design, have three-pole, four-pole (three-pole+neutral pole can be on or off), mainly for on and off of the circuit or electrical isolation, rated current of 1000A and above only for electrical isolation
■ The front side is equipped with marking window indicating that the contact is on and off
■ Can provide rear observation window according to the need, to observe directly the on-off state of contact
■ Can be equipped with two sets of auxiliary contacts

Conventional heating current Ith (A) 63A 100A 160A 250A 630A
Conventional heating In (A) 40 63 80 100 125 160 200 250 315 400 500 630

Rated insulation voltage Ui (V)

Installation category (IV)

690 690 690 690 690 690 690 690 690 690 690 690
Dielectric strength (V) 1890 1890 1890 1890 1890 1890 1890 1890 1890 1890 1890 1890

Rated impulse withstand voltage

Uimp kV (Installation category IV)

8 8 8 8 8 8 6 6 6 6 6 6
Rated operating current Ie (A) 380V 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) 380V 18.5 25 40 40 63 80 100 132 160 220 280 315

Rated short-time withstand

current Icw (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) AC23 380V

320 504 640 800 1000 1080 1600 2000 2520 3200 4000 5040

Rated making capacity

Icn (A Rms) AC23 380V

400 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300

Rated short-circuit making

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 380V 1700 1700 1700 1700 1400 1400 1400 1400 800 800 800 800
Electrical life 380V 300 300 300 300 200 200 200 200 200 200 200 200
Electrical life 380V 1.2 1.2 1.2 1.2 6.5 6.5 10 10 14.5 14.5 14.5 14.5
Operating torque (Nm) 3-pole 0.4 0.4 0.55 0.55 1.2 1.2 2 2 4.4 4.4 4.9 4.9
4-pole 0.42 0.42 0.62 0.63 1.4 1.4 2.35 2.35 5.5 5.5 6.3 6.3
Conventional heating current Ith (A) 1600A 2500A
Conventional heating In (A) 800 1000 1250 1600 2000 2500 3150

Rated insulation voltage Ui (V)

Installation category (IV)

690 690 690 690 690 690 690
Dielectric strength (V) 1890 1890 1890 1890 1890 1890 1890

Rated impulse withstand voltage

Uimp kV (Installation category IV)

6 6 6 6 8 8 8
Rated operating current Ie (A) 380V AC-21B 800 1000 1250 1600 2000 2500 3150
560 560 560 560 710 710 710
Motor power P (kW) 380V 30 30 30 30 50 50 50

Rated short-time withstand

current Icw (kA Rms) 1s

1200 1500 1875 2400 3000 3750 4725

Rated breaking capacity

Icn (A Rms) AC23 380V

1200 1500 1875 2400 3000 3750 4725

Rated breaking capacity

Icn (A Rms) AC23 380V

63 63 63 63 105 105 105

Rated short-circuit making

capacity Icm (kA peak)

500 500 500 500 300 300 300
Mechanical life 380V 500 500 500 500 300 300 300
Electrical life 380V 100 100 100 100 100 100 100
Operating torque (Nm) 37 37 37 37 60 60 60
Weight (kg) 3-pole 13.2 13.2 14.6 15.6 25.5 25.5 31
4-pole 14.8 14.8 17.1 18 37.5 37.5 51.5

Operation mode

Direct operation: the handle is installed directly in the middle of the load disconnector
Operation outside the cabinet: the handle is installed outside the distribution cabinet


Outline and installation dimension

Operation in cabinet of TXHGL-63A load isolation switch

Operation in cabinet of TXHGL-100A load isolation switch

Operation in cabinet of TXHGL-160~630A load isolation switch

Operation out of cabinaet of TXHGL-160~630A load isolation switch

Specification Outline 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/3 230 240 179 30 137 115 7 95 20 135 65 32 40 206 11 37 210 140
315A/4 290 240 179 30 137 115 7 95 20 135 65 32 40 206 11 37 270 140
400A/3 230 240 179 30 137 115 7 95 20 135 65 32 40 206 11 37 210 140
400A/4 290 240 179 30 137 115 7 95 20 135 65 32 40 206 11 37 270 140
500A/3 230 260 179 30 137 115 7 95 20 135 65 40 50 220 13 37.5 210 140
500A/4 290 260 179 30 137 115 7 95 20 135 65 40 50 220 13 37.5 270 140
630A/3 230 260 137 30 137 115 7 95 20 135 65 40 50 220 3 37.5 210 140
630A/4 290 260 179 30 137 115 7 95 20 135 65 4 50 220 13 37.5 270 140

Outline and installation dimensions of TXHGL-800~3150A load isolation switch

Specification Outline dimension Installation dimension
In A B N P R U V W X Y Y1 J K
800A/3 378 308 174 120 60 200 35 20 16.5 49
353 175
800A/4 493 310 235 120 60 200 35 20 16.5 48
471 174
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 40 358 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 20 80 200 40 40 20 03 208.5 353 200
2000A/4 493 447 235 120 80 200 40 40 20 104 210 471 220
2500A/3 378 445 174 120 80 200 40 40 20 103 208.5 353 220
2500A/4 493 447 235 120 80 200 40 40 20 104 210 471 220
3150A/3 378 492 174 120 120 200 50 50 21 77 237 353 220
3150A/4 493 494 235 120 120 200 50 50 21 78 238 471 220

Keywords: Load isolation switch, Load disconnector

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