Switch Disconnectors

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Switch Disconnectors
3NJ62 In-Line Switch Disconnectors with Fuses up to 630 A
Introduction
7/93 Siemens LV 10 · 2014
Main devices of sizes 2 and 3
1) The fuse is available from Lawson Fuses (UK) and does not correspond to
BS 88.
Size 2 3
Switch disconnectors with fuses
type 3NJ62...
NH ...22-3
...22-4
...23-1
...24-1
...24-2
...23-3
...23-4
...32-3
...32-4
...33-1
...34-1
...34-2
...33-3
...33-4
BS ...82-3
...82-4
...83-3
...83-4
...92-3
...92-4
...94-1
...94-2
...93-3
...93-4
...33-3
...33-4
Breaking capacity H S H H S H
Rated insulation voltage Ui V 1000
Rated impulse withstand voltage Uimp V 8000
Rated operational current I e
• For fuse links
according to IEC 60269/ BS 88
A 400 630 500 630 500
For fuse links according to
IEC 60269
2 and 1 3 and 2
For BS fuse links acc. to BS 88 B4 3T1)
Rated operational voltage Ue
• At 50/60Hz rated frequency V -- -- 690 230 440 500 690 500 690
• At DC V 230 440 -- -- -- -- -- -- --
Utilization category DC23B DC21B AC22B AC23B DC23B DC21B AC22B AC23B
Rated conditional short-circuit current
• Short-circuit strength (rms value) kA 60 100 60 100
• Short-circuit making capacity
(rms value)
kA 60 55 66 60 55 66
Rated making capacity
• p.f. = 0.65 A -- -- 1200 -- -- -- 1890 1500 -- --
• p.f. = 0.45 A -- -- -- -- -- -- -- -- -- --
• p.f. = 0.35 A -- -- -- 4000 -- -- -- -- 6300 5000
Rated breaking capacity
• p.f. = 0.65 A -- -- 1200 -- -- -- 1890 1500 -- --
• p.f. = 0.45 A -- -- -- -- -- -- -- -- -- --
• p.f. = 0.35 A -- -- -- 3200 -- -- -- -- 5040 4000
Endurance
Operating cycles total 1000 1000
200 • Electrical (690 V, p.f. = 0.65) 200
Power loss
(no fuse links)
W 158 357
Permissible ambient temperature °C -5...+55
Permissible mounting positions Horizontal and vertical with bottom connection
Degree of protection
(in operating state)
IP41
Connection type Main conductor connections
Cable lug connection
Conductor cross-section
• Conductor cross-section
(Al/Cu, solid or stranded) according to
DIN46235 (Cu) and DIN46239 (Al)
mm2 1x 25-300
2x 25-240
1x 25-300
2x 25-240
• Screw size 2x M12 2x M12
30 • Torque Nm 30
Terminal connection
• Conductor cross-section (Al/Cu), rm mm2 2x 16-185 2x 16-185
• Conductor cross-section (Al/Cu), re mm2 2x 16-150 2x 16-150
• Conductor cross-section (Al/Cu), sm mm2 2x 35-240 2x 35-240
• Conductor cross-section (Al/Cu), se mm2 2x 35-300 2x 35-300
• Required torque Nm 25 25
© Siemens AG 2014