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 mechanismFront operating mechanism
type of the driving mechanism motor driveYok
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 mechanismafter the first pole
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
Besleme gerilimi
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 contacts4
number of NC contacts for auxiliary contacts0
number of NO contacts for auxiliary contacts0
Suitability
suitability for use main switchVar
suitability for use switch disconnectorVar
suitability for use EMERGENCY OFF switchVar
suitability for use according to IEC 62626-1 safety switchYok
suitability for use maintenance/repair switchVar
Product details
product feature interlockYok
trip indicatorYok
voltage triggerYok
undervoltage releaseYok
undervoltage release with leading contactYok
product extension auxiliary switchVar
product extension optional motor driveYok
product extension optional voltage triggerYok
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
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
width94 mm
depth68 mm
fastening methodScrew fixing ve standard rail mounting 35 mm
4-hole front mountingYok
front mounting with central attachmentYok
rail mountingVar
mounting positionany
Net Weight780 g
Environmental conditions
minimum-25 °C
maximum70 °C
minimum-50 °C
maximum80 °C
Certificates
reference code according to IEC 81346-2Q