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Cat Number
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 CK91187OOOO
Lauritz Knudsen’s CZ range of switch disconnectors includes both DC SD and 800 V AC SD, designed for reliable switching and safe isolation in demanding electrical systems such as solar plants and industrial distribution networks. The DC switch disconnectors are suitable for voltages up to 1500 V DC, featuring rugged construction, high fault withstand capability, and enhanced safety elements like terminal shrouds, phase barriers, and door interlocks to prevent accidental contact and ensure secure maintenance operations,while also supporting high current ratings and long mechanical life. Similarly, the 800 V AC switch disconnectors are engineered for high-efficiency AC systems, offering dependable load breaking, compact design, and compliance with IEC standards, making them ideal for applications such as motor control, power distribution panels, and solar AC systems. Both variants are designed for Indian ambient conditions, allowing operation at elevated temperatures with reliable performance, easy installation, and compatibility with aluminium or copper terminations, thereby ensuring durability, safety, and versatility across a wide range of industrial and renewable energy applications.

Specifications

General
Short Description
Conformity to Standard
IEC 60947-3, IS/IEC 60947-3, EN 60947-3
Poles
4P
Frame
Frame 2
Certification
NABL,BIS
REACH Declaration
Yes
RoHS Declaration
Yes
External Accessories
Auxiliary Contact
Electrical Characteristics
Operational Frequency (Hz)
50/60 Hz
Rated impulse withstand voltage (Uimp)
12kV
Rated insulation voltage (Ui)
1500V
Rated operational current at 415V
500A
Rated operational voltage (Ue)
1500VDC
Short Time Withstand (KA rms) @1sec
10kA
Environmental Conditions
Ambient temperature
-5 ˚C to 55 ˚C
IP Rating
IP54
Pollution Degree
III
Features
Enclosure
No
Load-line bias
Yes
Utilization Category
DC-21B/PV2
Life
Electrical life-Operating Cycles
200
Mechanical life-Operating Cycles
10000
Physical Dimensions
Height
222
Width
186
Depth
166
Weight
2.5
CAD dimensions
Refer Website
Package Level 1 Units
1
Package Level 1 Width
271mm
Package Level 1 Height
159mm
Package Level 1 Depth / Length
0.33
Package Level 1 Gross Weight
7.8kg
Termination
Maximum Al cable with lug (sq mm)
2 X 300sq.mm
Terminal capacity
2 X 300mm2
Maximum Al cable with lug (sq mm)
2 X 300sq.mm
Tightening Torque
27N-m
Container Information
Package Level 1 Units
1
Package Level 1 Width
271mm
Package Level 1 Height
159mm
Package Level 1 Depth / Length
0.33
Package Level 1 Gross Weight
7.8kg
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