Siemens AC-21A User Manual download pdf (Page 3)

Siemens LV 10 · 2004

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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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