Siemens 3KA50 Brochure - Page 3

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Siemens 3KA50 Brochure
Type
SENTRIC
Rated uninterrupted current I
U
at 35 °C ambient temperature
Rated operating voltage U
e
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
3NP
A
160 ... 630
V
690
✓
✓
✓
✓
✓
✓
✓
–
–
–
✓
✓
✓
–
✓
–
–
✓
✓
✓
Switch Disconnectors and Fuses
Introduction
3K
63 ... 1000
690
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
–
✓
–
✓
✓
✓
✓
✓
✓
Siemens LV 10 · 2004
7/3
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