Siemens AC-21A - Manual (Page 3)

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
V 690 690
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 ✓ ✓