As we know, ensuring the safety, efficiency, and reliability of power distribution is paramount in electrical systems. A fundamental component contributing to these factors is the fuse switch disconnector.
This comprehensive guide aims to delve into the significance of fuse switch disconnectors, shedding light on their working principles, advantages, and the critical considerations involved in selecting the right one.
As we explore the world of electrical safety and functionality, we will also shift our focus to the offerings of Lauritz Knudsen (Formerly L&T Switchgear) in this domain.

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FN SD 125A 2P 415V AC Open Execution 50/60 Hz
SK90421OOOO
₹6,020.00
₹4,262.16
Incl. Tax
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SK90421OOOO
FN SD 125A 2P 415V AC Open Execution 50/60 Hz
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FN SD 125A 2P 415V AC Open Execution 50/60 Hz
₹6,020.00
₹4,262.16
Description
CZ SDs, FN SDs, C-line SDs are with the following safety features as a standard offering:
- Terminal Shrouds on both line and load side
- Phase barriers
- High clearances and creepage distances
- High ground clearance
- FN SD range: 32A to 1000A
- CZ SD Range: 125A to 630A
- C-Line SD Range: 1000A to 2000A
- AC-23A utilization category for entire range
- Quick-make /Quick-break mechanism
- Suitable for Aluminum termination
- Door interlocking in ON position with defeat feature
Product Details
Rated Operational Current (A) | 125A |
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Conformance to Standards | IS/IEC 60947-3, EN 60947-3 |
Utilization Category | AC-23A |
Rated operational voltage (Ue) | 415V |
Operating Frequency(Hz) | 50/60 |
Mechanical Life (No. of operating cycles) | 15000 |
Rated Insulation Voltage Ui (V) | 690V |
Short Time Withstand for 1sec (kA) | 4 |
Rated Breaking Capacity@AC-23A (A) | 1000 |
Rated Making Capacity@AC-23A (A) | 1250 |
Version | Open Execution |
No. of Poles | 2P |
Maximum Al termination (sq.mm) | 95 |
Mounting positions | All Orientations |
Standard Accessories | Terminal Shrouds, Phase Barriers, Extended handle with shaft |
Pollution Degree | 3 |
Discount Percentage | Between 0-10 % |
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