Siemens

Siemens 3KC4348-0FA21-0AA3

SENTRON, transfer switching equipment 3KC, remotely operated, RTSE, 3-pole, Iu: 800 A, Ue AC: 415 V

MPN: 3KC4348-0FA21-0AA3
Category: Basic Devices

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What is the Siemens 3KC4348-0FA21-0AA3?

SENTRON, transfer switching equipment 3KC, remotely operated, RTSE, 3-pole, Iu: 800 A, Ue AC: 415 V, Ie at AC-33 B at 415 V: 800 A, Ie at AC-23 A at 690 V: 630 A, screw mounting, motorized operating mechanism, at the right end, long handle, busbar connection

Specifications

Model

product brand name	SENTRON
product designation	transfer switching equipment
design of the product	remote-controlled
display version for switch position indicator manual operation	I - O - II
design of the actuating element	Long rotary knob
design of handle	Handle
type of the driving mechanism	motorized operating mechanism
type of the driving mechanism motor drive	Yes

General technical data

number of poles	3
type of device	fixed mounting
mechanical service life (operating cycles) for function sequence O-I-O typical	2 500
I2t value — with closed switch at 690 V for combination switch + gG fuse maximum	5 043 000 A²·s
I2t value — of the fuse at 415 V maximum permissible	6 000 000 A²·s
I2t value — of the gG fuse at 690 V maximum permissible	9 000 000 A²·s
position of the switch operating mechanism	at the right end
overvoltage category	IV
degree of pollution	3
insulation voltage — rated value	1 000 V
insulation voltage — with degree of pollution 3 at DC rated value	1 000 V

Supply voltage

supply voltage at AC — minimum	166 V
supply voltage at AC — maximum	332 V

Protection class

protection class IP	IP00
protection class IP — with closed switch with cover or cable lug cover	IP20
protection class IP — on the front	IP00

Dissipation

power loss [W] — with conventional rated thermal current per device

125.1 W

Main circuit

operating frequency rated value — minimum	45 Hz
operating frequency rated value — maximum	65 Hz
operational current rated value	800 A

Auxiliary circuit

number of connected NC contacts for auxiliary contacts	0
number of connected NO contacts for auxiliary contacts	3
number of connected CO contacts for auxiliary contacts	0
number of CO contacts for auxiliary contacts	4
number of NC contacts for auxiliary contacts	0
number of NO contacts for auxiliary contacts	0
suitability for use main switch	Yes
suitability for use switch disconnector	Yes
suitability for use EMERGENCY OFF switch	No
suitability for use maintenance/repair switch	Yes
product feature interlock	Yes
product extension auxiliary switch	Yes
product extension optional motor drive	No
product extension optional voltage trigger	No

Short circuit

short-circuit current making capacity (Icm) for switch disconnector — at 415 V AC without fuse link according to IEC 60947-3 rated value minimum	73.5 kA
short-circuit current making capacity (Icm) for switch disconnector — at 415 V AC without fuse link according to IEC 60947-6-1 rated value minimum	40 kA
conditional short-circuit current with line-side fuse protection — at 415 V by gG fuse according to IEC 60947-6-1 rated value	50 kA
conditional short-circuit current with line-side fuse protection — at 415 V by gG fuse rated value	50 kA
conditional short-circuit current with line-side fuse protection — at 690 V by gG fuse according to IEC 60947-3 rated value	50 kA
input current at digital input with signal <0> maximum	1 mA
number of digital inputs	5
number of digital inputs — design of the switching input	Connected with control terminal
relay design	1 relay: 1NO, 2A 250 VAC or 2A 24 VDC.
pulse duration minimum	0.06 s
input delay time	0.046 s

Connections

type of connectable conductor cross-sections — for copper busbar	2x50x5
type of connectable conductor cross-sections for copper conductor — stranded with lug according to DIN 46234	2x185 mm²...4x185 mm²
type of electrical connection — of the inputs and outputs	Removable/insertable
type of electrical connection — for main current circuit	busbar connection

Mechanical Design

height	370 mm
width	504 mm
depth	439.5 mm
fastening method	screw fixing
fastening method — 4-hole front mounting	No
fastening method — front mounting with central attachment	No
fastening method — rail mounting	No
Net Weight	40.5 kg

Environmental conditions

ambient temperature during operation — minimum	-20 °C
ambient temperature during operation — maximum	70 °C
ambient temperature during storage — minimum	-40 °C
ambient temperature during storage — maximum	70 °C

Downloads & documentation

Official documents from Siemens, downloaded directly from the manufacturer.

Data sheets & manuals

Product data sheet 3KC4348-0FA21-0AA3PDF

3KC4348-0FA21-0AA3: frequently asked questions

When can 3KC4348-0FA21-0AA3 be shipped?

3KC4348-0FA21-0AA3 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up 3KC4348-0FA21-0AA3 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for 3KC4348-0FA21-0AA3 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 3KC4348-0FA21-0AA3, subject to availability and destination.