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Switch Disconnectors
3NJ62 In-Line Switch Disconnectors with Fuses up to 630 A
Introduction
7/94
Siemens LV 10 · 2014
7
Auxiliary switches
Electronic fuse monitoring, AC version (EFM 10)
Electronic fuse monitoring, AC version (EFM 20)
Electronic fuse monitoring, DC version (EFM 25)
Ammeters
Motorized operating mechanism
Acc. to IEC 60947-5-1
Rated insulation voltage
U
i
V 690
Rated impulse withstand voltage
U
imp
V 8000
Rated operational current
I
e
• At AC15,
U
e
= 120 V
A 8
• At AC15,
U
e
= 230 V
A 6
• At AC15,
U
e
= 400 V
A 4
• At AC15,
U
e
= 690 V
A 2
Size
00 1
2/3
Apparent power consumption
VA S approx. 2.5
Internal resistance
of measurement circuit
M
R
in
> 6
Storage temperature
°C - 20 ... + 80
Operating temperature
°C - 5 ... + 55
Operating temperature
(500 V and/or 500 A)
°C - 5 ... + 35
Prot. rating in closed in-line connector
IP40
Rated operating voltage of the main
control switching devices
V AC 230 ... 690
Hz 50/60
Voltage limits
% ±15
Signaling relay acc. to IEC 60947-5-1
A
I
th
= 1.5
kV
U
imp
= 4
V
U
i
= 250
Load capacity of the signaling relay
•
U
e
V 24
125 240
• DC - 13;
I
e
A 1
0.2 0.1
• AC - 15;
I
e
A 1.5
Short-circuit protection
Max. fuse protection
DIAZED 2 A gLgG
Size
00
1
2/3
Apparent power consumption
VA S approx. 2.5
Internal resistance
of measurement circuit
M
R
in
> 6
Storage temperature
°C - 20 ... + 80
Operating temperature
°C - 5 ... + 55
Operating temperature
(500 V and/or 500 A)
°C - 5 ... + 35
Protection rating in closed in-line
connector
IP40
Rated operating voltage of the main
control switching devices
V AC 230 ... 690
Hz 50/60
Voltage limits
% ±15
Undervoltage
V 375
Overvoltage
V 425
Voltage drop for faulty fuses
V > 13
Delay time
s
0.1
Relay 2
As relay 1 (fuse monitoring)
Storage function
Off
Open/closed-circuit principle
Closed-circuit principle
Mode
Run mode
Menu option
Display of voltage values/
signals
Signaling relay acc. to IEC 60947-5-1
A
I
th
= 1.5
kV
U
imp
= 4
V
U
i
= 250
Signaling relay 1
1 changeover contact for
fuse monitoring only
Signaling relay 2
1 changeover contact as
output for central fault
OR as signaling relay 1
(presetting)
Load capacity of the signaling relay
•
U
e
V 24
125 240
• DC - 13;
I
e
A 1
0.2
0.1
• AC - 15;
I
e
A 1.5
Short-circuit protection
Max. fuse protection
DIAZED 2 A gLgG
Size
00
1
2 / 3
Apparent power consumption
VA S approx. 2.5
Internal resist. of measurement circuit
M
R
in
> 6
Storage temperature
°C - 20 ... + 80
Operating temperature
°C - 5 ... + 55
Operating temperature
(500 V and/or 500 A)
°C - 5 ... + 35
Protection rating in closed in-line
connector
IP40
Rated operating voltage of the main
control switching devices
V DC 220 ... 440
Voltage limits
% ±15
Undervoltage
V 200
Overvoltage
V 240
Voltage drop for faulty fuses
V > 20
Delay time
s
0.1
Relay 2
As relay 1
(fuse monitoring)
Storage function
Off
Open/closed-circuit principle
Closed-circuit principle
Mode
Run mode
Menu option
Display of
voltage values/
signals
Signaling relay acc. to IEC 60947-5-1
A
I
th
= 1.5
kV
U
imp
= 4
V
U
i
= 250
Signaling relay 1
1 changeover contact for
fuse monitoring only
Signaling relay 2
1 changeover contact as
output for central fault
OR as signaling relay 1
(presetting)
Load capacity of the signaling relay
•
U
e
V 24
125 240
• DC - 13;
I
e
A 1
0.2 0.1
• AC - 15;
I
e
A 1.5
Short-circuit protection
Max. fuse protection
DIAZED 2 A gLgG
Inputs
x/1 A or x/5 A
Overload
• Moving-iron measuring instruments
1.2 times
• Bi-metal measuring instruments
2 times
Slave pointer
• Moving-iron measuring instruments
min --
• Bi-metal measuring instruments
min 15
Power consumption
• Moving-iron measuring instruments
VA 0.6
• Bi-metal measuring instruments
VA 1
Size
00 1
2/3
Control supply voltage
V DC 24 ± 2
Power consumption
A 1.1 1.3
2.8
Service life (no limitation of
switch disconnector according
to IEC 60947-3)
Operating cycles total
1600
Switch cycles under load
200
Signal duration
s
Min. 0.5 or
continuous signal
© Siemens AG 2014