Model
product brand nameSENTRON
product designation3KD switch disconnector
design of the productSwitch
display version for switch position indicator door-coupling rotary operating mechanismON-OFF
design of the actuating elementWithout handle
type of the driving mechanismSide operating mechanism
type of the driving mechanism motor driveNo
General technical data
number of poles3
type of devicefixed mounting
size of switch disconnector1
mechanical service life (operating cycles) typical15 000
at AC-23 A at 690 V6 000
at DC-23 A at 440 V1 500
with closed switch at 1000 V for combination switch +gG/aM SITOR fuse maximum2 331 A²·s
of the fuse at 500 V maximum permissible34 000 A²·s
of the gG fuse at 690 V maximum permissible55 000 A²·s
of the gG/aM SITOR fuse at 1000 V maximum permissible6 000 A²·s
of the molded case circuit breaker at 415 V maximum permissible480 000 A²·s
position of the switch operating mechanismat the left end
overvoltage in percent relative to the operating voltage at AC at 400, 500, 690 V at 50/60 Hz10 %
overvoltage categoryIII
degree of pollution3
Voltage
with degree of pollution 2 at DC rated value440 V / 3
with degree of pollution 3 at DC rated value440 V / 3
rated value1 000 V
surge voltage resistance rated value8 kV
operational current at AC-22 A at 1000 V maximum80 A
let-through current of the fuse at 500 V maximum permissible12 500 A
let-through current of the gG fuse at 690 V maximum permissible14 700 A
Supply voltage
operating voltage at AC rated value1 000 V
Protection class
protection class IPIP20
with closed switch with cover or cable lug coverIP20
on the frontIP20
Dissipation
with conventional rated thermal current per pole2.1 W
with conventional rated thermal current per device6.3 W
for rated value of the current at AC in hot operating state per pole2.1 W
Main circuit
at AC-23 A at 500 V rated value55 kW
operational current rated value80 A
Auxiliary circuit
number of connected NC contacts for auxiliary contacts0
number of connected NO contacts for auxiliary contacts0
number of connected CO contacts for auxiliary contacts0
number of CO contacts for auxiliary contacts3
number of NC contacts for auxiliary contacts0
number of NO contacts for auxiliary contacts0
Suitability
suitability for use main switchYes
suitability for use switch disconnectorYes
suitability for use EMERGENCY OFF switchYes
suitability for use according to IEC 62626-1 safety switchNo
suitability for use maintenance/repair switchYes
Product details
product feature interlockNo
trip indicatorNo
voltage triggerNo
undervoltage releaseNo
undervoltage release with leading contactNo
product extension auxiliary switchYes
product extension optional motor driveNo
product extension optional voltage triggerNo
Short circuit
short-time withstand current (Icw) at 1000 V AC/440 V DC limited to 1 s rated value3 kA
at 1000 V AC without fuse link rated value minimum7 kA
at DC 440 V without fuse link rated value minimum7 kA
without fuse link rated value minimum7 kA
at 415 V by molded case circuit breaker rated value36 kA
at 500 V by gG fuse rated value100 kA
at 690 V by gG fuse rated value100 kA
Connections
type of connectable conductor cross-sections with flexible busbar2x (0,8x9 mm²)
for copper busbar'1 x (2 x 9 mm²)
solid1x (1 ... 16 mm²)
finely stranded with core end processing1x (1 ... 35 mm²)
stranded1x (6 ... 35 mm²)
type of electrical connection for main current circuitbox terminal
Mechanical Design
height119 mm
width103.3 mm
depth70 mm
fastening methodScrew fixing and standard rail mounting 35 mm
4-hole front mountingNo
front mounting with central attachmentNo
rail mountingYes
mounting positionany
Net Weight852 g
Environmental conditions
minimum-25 °C
maximum70 °C
minimum-50 °C
maximum80 °C
Certificates
reference code according to IEC 81346-2Q