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Siemens 3KD0633-2LG20-3

Switch disconnector 125A, size 02

MPN: 3KD0633-2LG20-3
Category: Basic Devices

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What is the Siemens 3KD0633-2LG20-3?

Switch disconnector 125A, size 02, 3-pole Front operating mechanism center Complete unit with direct operating mechanism red/yellow Box terminal

Specifications

Model

product brand name	SENTRON
product designation	3KD switch disconnector
design of the product	Switch
display version for switch position indicator manual operation	O-I
design of the actuating element	Short rotary knob
type of the driving mechanism	Front operating mechanism
type of the driving mechanism motor drive	No

General technical data

number of poles	3
type of device	fixed mounting
size of switch disconnector	02
mechanical service life (operating cycles) typical	100 000
electrical endurance (operating cycles) — at AC-23 A at 690 V	6 000
I2t value — of the fuse at 400 V maximum permissible	130 000 A²·s
I2t value — of the fuse at 500 V maximum permissible	130 000 A²·s
I2t value — of the gG fuse at 690 V maximum permissible	130 000 A²·s
position of the switch operating mechanism	central
overvoltage in percent relative to the operating voltage at AC at 400, 500, 690 V at 50/60 Hz	5 %
overvoltage category	III
degree of pollution	3

Voltage

insulation voltage — rated value	750 V
surge voltage resistance rated value	8 kV
let-through current of the fuse at 400 V maximum permissible	10 500 A
let-through current of the fuse at 500 V maximum permissible	7 000 A
let-through current of the gG fuse at 690 V maximum permissible	7 000 A

Supply voltage

operating voltage at AC rated value

690 V

Protection class

protection class IP	IP10
protection class IP — with closed switch with cover or cable lug cover	IP10
protection class IP — on the front	IP40

Dissipation

power loss [W] — with conventional rated thermal current per pole	12 W
power loss [W] — with conventional rated thermal current per device	12 W
power loss [W] — for rated value of the current at AC in hot operating state per pole	36 W

Main circuit

operating power — at AC-23 A at 500 V rated value	22 kW
operational current rated value	125 A

Auxiliary circuit

number of connected NC contacts for auxiliary contacts	0
number of connected NO contacts for auxiliary contacts	0
number of connected CO contacts for auxiliary contacts	0
number of CO contacts for auxiliary contacts	0
number of NC contacts for auxiliary contacts	2
number of NO contacts for auxiliary contacts	2

Suitability

suitability for use main switch	Yes
suitability for use switch disconnector	Yes
suitability for use EMERGENCY OFF switch	Yes
suitability for use according to IEC 62626-1 safety switch	No
suitability for use maintenance/repair switch	Yes

Product details

product feature interlock	Yes
product component — trip indicator	No
product component — voltage trigger	No
product component — undervoltage release	No
product component — undervoltage release with leading contact	No
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 — without fuse link rated value minimum	3.5 kA
conditional short-circuit current (Icc) with line-side fuse protection at 400 V by gG fuse rated value	50 kA
conditional short-circuit current with line-side fuse protection — at 500 V by gG fuse rated value	20 kA
conditional short-circuit current with line-side fuse protection — at 690 V by gG fuse rated value	20 kA

Connections

type of connectable conductor cross-sections for copper conductor — solid	1 x (4 ... 50) mm²
type of connectable conductor cross-sections for copper conductor — finely stranded with core end processing	1 x (4 ... 35) mm²
type of connectable conductor cross-sections for copper conductor — stranded	1 x (4 ... 50) mm²
type of electrical connection for main current circuit	box terminal

Mechanical Design

height	110 mm
width	73 mm
depth	95 mm
fastening method	Screw fixing and standard rail mounting 35 mm
fastening method — 4-hole front mounting	No
fastening method — front mounting with central attachment	No
fastening method — rail mounting	Yes
mounting position	any
Net Weight	453 g

Environmental conditions

ambient temperature during operation — minimum	-5 °C
ambient temperature during operation — maximum	40 °C
ambient temperature during storage — minimum	-25 °C
ambient temperature during storage — maximum	55 °C

Certificates

reference code according to IEC 81346-2

Downloads & documentation

Official documents from Siemens, downloaded directly from the manufacturer.

Data sheets & manuals

Product data sheet 3KD0633-2LG20-3PDF

3KD0633-2LG20-3: frequently asked questions

When can 3KD0633-2LG20-3 be shipped?

3KD0633-2LG20-3 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 3KD0633-2LG20-3 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 3KD0633-2LG20-3 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 3KD0633-2LG20-3, subject to availability and destination.