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HR5 Series Fuse Type Isolating Switch
Application
    HR5 Series Fuse Type Isolating Switch (hereinafter referred to as switch) is applicable for the circuit of AC 50 Hz (or 60Hz) rated voltage up to 690V, and conventional free air heating current up to 630A. It can be mainly used in the distribution circuit of high short-circuit current and the motor circuit, serving for power switch, isolating switch and emergency switch as well as circuit protector. Generally, it cannot be directly used for switching of single motor and shall be used indoors.
Model and Definition
Normal Working Conditions
Ambient air temperature
A.The upper limit of ambient air temperature in the installation place shall not exceed+40 and the lower limit not less than -5.
B.The average temp. value shall not exceed+35 within 24 hours.
Note:Referring to the working condition that lower limit of ambient air temp. is -10 or -25, the user shall indicate that in the order.
The height above sea level for installing the switch shall not exceed 2000m.
Note: If installation place for switch is above 2000m, the user shall indicate that in the order.
When at max. temperature of +40, relative humidity of air shall not exceed 50%. Higher relative humidity such as 90% at the temperature of 20 is allowed under lower temperature. Special measure shall be taken against occasional condensation caused by temp. change.
The pollution grade: grade 3 for surrounding environment of switch.
The switch shall be vertically installed in the place without vibration or shock.
Structural Features
The switch is composed of two parts: steel base and plastic cover board. 3 pairs of clamp contacts and arc-extinguishing chamber are mounted on the base with insulating spacer. The fuse body is mounted on the cover board, directly serving for moving contact blade. The cover board can turn around the hinge pin and open in sector shape so that the fuse body can be completely pulled out from the socket. The upper cover can be removed from the base easily so as to facilitate the installtion of switch, and safely change the fuse body. The arc-extinguishing chamber of switch is made of plastic through pressing. For its simple structure, it can be easily dismantled or assembled. Each arc-distinguishing chamber is composed of inner and exterior compartments and mounted with arc metal corner. That can increase arc-extinguishing ability, eliminate the danger of flashover, and prolong the service life of contact. The switch is also designed with a spring energy-storage mechanism for quick switching, enabling it to quickly and safely actuate under extremely heavy condition. In addition, the switch is mounted with LX19K travel switch. If attached with a fuse body with firing pin, when the fuse body of some phase is blown, the firing pin will spring out and actuate the travel switch via a transmission shaft. Thus the singal of loss of phase is sent out to alarm for taking measurement.
Main Technical Data
Rated insulation voltage:690V
Rated working voltage: 380V, 690V
Rated working current: 380V, 100A, 200A, 400A, 630A, 660A, 100A, 200A, 315A, 425A
Rafer to table 1 for making and breaking capability of switch and rated blowout short-circuit current.
Mechanical service life for switch is 1700 cycles(100A),1400cycles(200A),and 800cyces(400Aand 630A) separately.
Electric service life of swtich is 300 cycles(100A) and 200cycles (200 A400A ,and 630A)separately. Refer to table 2 for making and breaking conditions.
The rated working volatge of auxiliary switch(LX19K) is AC 380V, conventional free air heating current 5A, and rated control capacity 300VA.
Refer to table 3 for matching relation between switch and fuse body.
Rated working
voltage (V)
Rated working
current (A)
Using
category
Rated making and breaking capability
Rated fuse short-circuit current(KA)
Making
Breaking
Operation
cycle index
Current
effective value
COS/
I/Ie
U/Ue
COS/
I/Ie
U/Ue
COS/
380
100
AC-23B
10
1.05
0.45
8
1.05
0.45
5
100
0.2
200
AC-23B
10
1.05
0.35
8
1.05
0.35
3
100
0.2
400
AC-23B
10
1.05
0.35
8
1.05
0.35
3
100
0.2
630
AC-23B
10
1.05
0.35
8
1.05
0.35
3
100
0.2
660
100
AC-22B
3
1.05
0.65
3
1.05
0.65
5
50
0.25
200
AC-22B
3
1.05
0.65
3
1.05
0.65
5
50
0.25
315
AC-22B
3
1.05
0.65
3
1.05
0.65
5
50
0.25
425
AC-22B
3
1.05
0.65
3
1.05
0.65
5
50
0.25

Rated working voltage(V)
Using category
Making I/Ie
Making U/Ue
Making COS/
Breaking Ic/Ie
Breaking U/Ue
Breaking COS/
380
AC-23B
1
1
0.65
1
1
0.65
660
AC-22B
1
1
0.8
1
1
0.8
 
Application Between Switch and Fuse

Conventional free air heating current(A)
Fuse size
Rated current of fuse body (A)
100
00
46101620253235               
40506380100120160              
200
1
80100125160200224250           
400
2
125160200224250300315355400
630
3
425500630                              

Note :When the switch is used in the motor circuit, the rated current of fuse is allowed to be larger than the rated working current of switch.
Outline and Installation Size
Mode
Conventional free air heating current (A)
Size (mm)
a
b
d
e
f(Installation holes)
HR5-100/31
100
1633.00
801.10
1363.00
2784.00
1000.80
HR5-100/30
100
1633.00
801.10
1363.00
2784.00
1000.80
HR5-200/31
200
2203.60
2031.45
1933.60
3424.45
1300.80
HR5-200/30
200
2203.60
2031.45
1933.60
3424.45
1300.80
HR5-400/31
400
2203.60
2031.45
2093.60
3584.45
1300.80
HR5-400/30
400
2203.60
2031.45
2093.60
3584.45
1300.80
HR5-630/31
630
2204.05
2271.60
2243.60
3784.45
2000.925
HR5-630/30
630
2204.05
2271.60
2243.60
3784.45
2000.925