Lauritz Knudsen FN SD (Switch Disconnector) 125A | TPN | Open Execution| Strong & durable construction
Images:
Image 360:
How to video:
Further offers for this product
Incl. Tax
In Stock
No sellers found for this product.
Incl. Tax
Lauritz Knudsen FN SD (Switch Disconnector) 125A | TPN | Open Execution| Strong & durable construction
- Description
- Specifications
- Documents
- Warranty
- Reviews
Description
About the Product
The Lauritz Knudsen FN SD 125A, TPN, 415V AC Open Execution Switch Disconnector (50/60 Hz) is a high-performance electrical switching device engineered for safe isolation & effective control of three-phase electrical circuits in industrial & commercial environments. Its open execution design allows convenient panel integration with easy access for wiring, inspection, & maintenance.
Manufactured using premium materials & precision engineering, this switch disconnector ensures dependable switching performance & complete circuit isolation during maintenance or emergency conditions. It is widely used in switchgear panels, distribution boards, & industrial power systems, ensuring safe & reliable power management in three-phase applications.
Purpose & Function
This switch disconnector is designed for efficient circuit control & safety:
• Ensures safe disconnection of three-phase electrical circuits
• Provides manual switching for load management
• Enables complete isolation during maintenance
• Prevents accidental energization during servicing
• Supports stable & controlled power distribution
Electrical Configuration
• Product type: Switch Disconnector (Open Execution)
• Rated current: 125A
• Rated voltage: 415V AC
• Poles: TPN (Triple Pole + Neutral)
• Frequency: 50/60 Hz
• Function: Switching & isolation of electrical circuits
Construction & Design
Engineered for durability & industrial performance:
• High-quality insulating materials for enhanced safety
• Robust contact system for reliable switching performance
• Open execution design for easy installation & accessibility
• Compact yet sturdy construction
• Designed for long operational life
Safety & Protection
• Ensures complete circuit isolation during maintenance
• Minimizes risk of electrical hazards & faults
• Provides reliable manual switching mechanism
• Enhances safety in switchgear & control panels
• Supports safe & controlled electrical operations
Mounting & Installation
• Designed for panel & switchgear mounting
• Open execution allows easy wiring access
• Suitable for industrial & commercial installations
• Ensures secure & stable mounting
• Simplifies maintenance & servicing
Application Domains
• Industrial electrical panels
• Three-phase power distribution systems
• Switchgear & control panels
• Commercial electrical installations
• Machinery & equipment isolation
• Infrastructure & utility systems
Key Features
• Rated 125A, 415V AC, TPN configuration
• Open execution switch disconnector design
• Reliable switching & isolation performance
• Durable & industrial-grade construction
• Suitable for 50/60 Hz systems
Applications
• Three-phase circuit isolation & switching
• Industrial & commercial power systems
• Switchgear & panel applications
• Machinery control & safety isolation
• Power distribution systems
FAQs
1. What is a TPN switch disconnector?
Ans: TPN (Triple Pole + Neutral) disconnectors are used for isolating three-phase electrical circuits with a neutral connection.
2. What does 125A rating mean?
Ans: It indicates the device can safely carry up to 125 amperes of current.
3. What is the voltage rating?
Ans: The switch is rated for 415V AC systems.
4. What is open execution design?
Ans: It refers to a design where internal components are accessible for panel mounting & wiring.
5. Where is this switch disconnector used?
Ans: It is used in switchgear panels, distribution boards, & industrial three-phase systems.
6. Does it support three-phase systems?
Ans: Yes, it is specifically designed for three-phase (TPN) circuit control & isolation.
7. Does it ensure safety during maintenance?
Ans: Yes, it provides complete circuit isolation for safe maintenance operations.
Overview
| Rated Operational Current (A) | 125A |
|---|---|
| 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 Operational Power (kW) | 58 |
| Rated Breaking Capacity@AC-23A (A) | 1000 |
| Rated Making Capacity@AC-23A (A) | 1250 |
| Version | Open Execution |
| No. of Poles | TPN |
| 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 % |
Warranty
- All products listed in the price list are covered by a warranty against manufacturing defects for a period of 18* months from the date of purchase.
- For Lauritz Knudsen MCBs & Isolators mounted inside Lauritz Knudsen Distribution Boards, an extended warranty of 5 years is provided.
- In the event of a defect due to faulty workmanship or other associated reasons, the manufacturer will, at its discretion, remedy the defect or replace the faulty parts or the entire product as soon as possible, free of cost.
- This warranty is subject to proper usage and efficient maintenance and does not cover defects arising from fire, accidents, inefficient maintenance, faulty operation, or deliberate or accidental damage.
- The warranty does not cover damage to power electronic components such as thyristors & IGBTs, which primarily fail due to over-temperature or over-voltage. Users must take adequate precautions to eliminate such conditions.
- The manufacturer shall not be responsible or liable for any special, incidental, social, or consequential losses (including loss of profits), punitive damages, injury, or damages of any kind solely attributable to defect or failure of its products.
- The manufacturer shall not be liable in any manner for issues related to or failure in the performance of any other equipment to which the product is connected.
Reviews
Description
About the Product
The Lauritz Knudsen FN SD 125A, TPN, 415V AC Open Execution Switch Disconnector (50/60 Hz) is a high-performance electrical switching device engineered for safe isolation & effective control of three-phase electrical circuits in industrial & commercial environments. Its open execution design allows convenient panel integration with easy access for wiring, inspection, & maintenance.
Manufactured using premium materials & precision engineering, this switch disconnector ensures dependable switching performance & complete circuit isolation during maintenance or emergency conditions. It is widely used in switchgear panels, distribution boards, & industrial power systems, ensuring safe & reliable power management in three-phase applications.
Purpose & Function
This switch disconnector is designed for efficient circuit control & safety:
• Ensures safe disconnection of three-phase electrical circuits
• Provides manual switching for load management
• Enables complete isolation during maintenance
• Prevents accidental energization during servicing
• Supports stable & controlled power distribution
Electrical Configuration
• Product type: Switch Disconnector (Open Execution)
• Rated current: 125A
• Rated voltage: 415V AC
• Poles: TPN (Triple Pole + Neutral)
• Frequency: 50/60 Hz
• Function: Switching & isolation of electrical circuits
Construction & Design
Engineered for durability & industrial performance:
• High-quality insulating materials for enhanced safety
• Robust contact system for reliable switching performance
• Open execution design for easy installation & accessibility
• Compact yet sturdy construction
• Designed for long operational life
Safety & Protection
• Ensures complete circuit isolation during maintenance
• Minimizes risk of electrical hazards & faults
• Provides reliable manual switching mechanism
• Enhances safety in switchgear & control panels
• Supports safe & controlled electrical operations
Mounting & Installation
• Designed for panel & switchgear mounting
• Open execution allows easy wiring access
• Suitable for industrial & commercial installations
• Ensures secure & stable mounting
• Simplifies maintenance & servicing
Application Domains
• Industrial electrical panels
• Three-phase power distribution systems
• Switchgear & control panels
• Commercial electrical installations
• Machinery & equipment isolation
• Infrastructure & utility systems
Key Features
• Rated 125A, 415V AC, TPN configuration
• Open execution switch disconnector design
• Reliable switching & isolation performance
• Durable & industrial-grade construction
• Suitable for 50/60 Hz systems
Applications
• Three-phase circuit isolation & switching
• Industrial & commercial power systems
• Switchgear & panel applications
• Machinery control & safety isolation
• Power distribution systems
FAQs
1. What is a TPN switch disconnector?
Ans: TPN (Triple Pole + Neutral) disconnectors are used for isolating three-phase electrical circuits with a neutral connection.
2. What does 125A rating mean?
Ans: It indicates the device can safely carry up to 125 amperes of current.
3. What is the voltage rating?
Ans: The switch is rated for 415V AC systems.
4. What is open execution design?
Ans: It refers to a design where internal components are accessible for panel mounting & wiring.
5. Where is this switch disconnector used?
Ans: It is used in switchgear panels, distribution boards, & industrial three-phase systems.
6. Does it support three-phase systems?
Ans: Yes, it is specifically designed for three-phase (TPN) circuit control & isolation.
7. Does it ensure safety during maintenance?
Ans: Yes, it provides complete circuit isolation for safe maintenance operations.
Overview
| Rated Operational Current (A) | 125A |
|---|---|
| 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 Operational Power (kW) | 58 |
| Rated Breaking Capacity@AC-23A (A) | 1000 |
| Rated Making Capacity@AC-23A (A) | 1250 |
| Version | Open Execution |
| No. of Poles | TPN |
| 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 % |
Warranty
- All products listed in the price list are covered by a warranty against manufacturing defects for a period of 18* months from the date of purchase.
- For Lauritz Knudsen MCBs & Isolators mounted inside Lauritz Knudsen Distribution Boards, an extended warranty of 5 years is provided.
- In the event of a defect due to faulty workmanship or other associated reasons, the manufacturer will, at its discretion, remedy the defect or replace the faulty parts or the entire product as soon as possible, free of cost.
- This warranty is subject to proper usage and efficient maintenance and does not cover defects arising from fire, accidents, inefficient maintenance, faulty operation, or deliberate or accidental damage.
- The warranty does not cover damage to power electronic components such as thyristors & IGBTs, which primarily fail due to over-temperature or over-voltage. Users must take adequate precautions to eliminate such conditions.
- The manufacturer shall not be responsible or liable for any special, incidental, social, or consequential losses (including loss of profits), punitive damages, injury, or damages of any kind solely attributable to defect or failure of its products.
- The manufacturer shall not be liable in any manner for issues related to or failure in the performance of any other equipment to which the product is connected.