Siemens LV 10 · 2004
7/3
Switch Disconnectors and Fuses
Introduction
7
Type 3NP 3K
SENTRIC
Rated uninterrupted current
I
U
at 35 °C ambient temperature
A 160 ... 630 63 ... 1000
Rated operating voltage
U
e
V690 690
AC-21
at 400 V ✓ ✓
at 500 V ✓✓
at 690 V ✓ ✓
AC-22
at 400 V ✓ ✓
at 500 V ✓✓
at 690 V ✓ ✓
AC-23
at 400 V ✓ ✓
at 500 V – ✓
at 690 V – ✓
Switch versions
Front mounting – ✓
Base mounting ✓✓
Busbars
•40 mm ✓ –
•60 mm ✓✓
•185 mm – –
Molded-plastic enclosure ✓ ✓
Switch accessories
4th pole (N conductor)
(leading switch-on,
delayed switch-off contact)
– ✓
Auxiliary contacts
1 NO + 1 NC – ✓
1 CO ✓✓
Fuse monitoring
• with circuit-breakers ✓✓
• with electronics ✓✓
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