3LD2804-1TP51
3LD switch disconnector, main switch

From SIEMENS

SENTRON, Switch disconnector 3LD, main switch, 3-pole, Iu: 125 A, Operating power / at AC-23 A at 400 V: 45 kW, front-mounted, 1 NC, 1 NO, rotary operating mechanism, black, 4-hole mounting of the handle
Model
Product brand nameSENTRON
Product designation3LD Switch disconnector
Design of the productMain switch
Display version / for switch position indicator manual operation1 ON - 0 OFF
Design of the operating mechanismShort rotary knob
Design of handlerotary operating mechanism, black
Type of the driving mechanism / motor driveNo
General technical data
Number of poles3
Type of devicefixed mounting
Type of switchfront mounted
Size of switch disconnector4
Operating frequency / maximum50 1/h
Voltage
Insulation voltage / rated value690 V
Surge voltage resistance / rated value6 kV
Protection class
Protection class IPIP65
Protection class IP / on the frontIP65
Dissipation
Power loss [W] / for rated value of the current / at AC / in hot operating state / per pole12 W
Electricity
Current / at AC / rated value125 A
Continuous current / rated value125 A
Continuous current / of upstream fuse / rated value125 A
Short-time current resistance (Icw) / at 690 V / limited to 1 s / rated value2 000 A
Main circuit
Operating frequency
initial value50 Hz
Full-scale value60 Hz
Operating power
at AC-23 A / at 400 V / rated value45 kW
at AC-23 A / at 690 V / rated value37 kW
at AC-3 / at 400 V / rated value37 kW
at AC-3 / at 690 V / rated value30 kW
Operating voltage
at AC / at 50/60 Hz / rated value690 V
Auxiliary circuit
Number of CO contacts / for auxiliary contacts0
Number of NC contacts / for auxiliary contacts1
Number of NO contacts / for auxiliary contacts1
Operating voltage / of auxiliary contacts / at AC / maximum500 V
Continuous current / of the auxiliary contact / rated value10 A
Insulation voltage / of the auxiliary switch / rated value500 V
Suitability
Suitability for use
Main switchYes
switch disconnectorYes
EMERGENCY OFF switchNo
safety switchYes
maintenance/repair switchYes
Product details
Product feature / interlockYes
Number of bracket locks / maximum3
Hasp thickness / of bracket locks / minimum4 mm
Hasp thickness / of bracket locks / maximum8 mm
Product extension / optional
motor driveNo
Voltage triggerNo
Short circuit
Conditional short-circuit current / with line-side fuse protection
at 690 V / by gG fuse / rated value20 kA
Connections
Type of connectable conductor cross-sections
for copper conductor / solid1x (4…50mm²)
for copper conductor / finely stranded / with core end processing1x (4…35mm²)
for copper conductor / stranded1x (4…50mm²)
for auxiliary contacts / solid2x (0.75 ... 2.5 mm²), 1x 4 mm²
for auxiliary contacts / finely stranded / with core end processing2x (0.75 ... 1.5 mm²), 1x 2.5 mm²
for auxiliary contacts / stranded2x (0.75 ... 2.5 mm2), 1x 4 mm2
Type of electrical connection
for main current circuitbox terminal
for auxiliary contactsconnection terminals
Requirements
Design of the fuse link
for short-circuit protection of the main circuit / requiredfuse gL/gG: 125 A
for short-circuit protection of the auxiliary switch / requiredfuse gL/gG: 10 A
Mechanical Design
Height106 mm
Width90 mm
Depth112.5 mm
Mounting typeBuilt-in unit fixed-mounted version
Mounting type
front mounting with 4-hole attachmentYes
front mounting with central attachmentNo
rail mountingNo
Net weight497 g
Environmental conditions
Ambient temperature
during operation / minimum-25 °C
during operation / maximum55 °C

External links