Lauritz Knudsen Manual Changeover Switch, C-Line, 250A, 415V AC | Frame 3 | 4 Pole | SS Enclosure Extended Handle| Load‑Handling Capability
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Lauritz Knudsen Manual Changeover Switch, C-Line, 250A, 415V AC | Frame 3 | 4 Pole | SS Enclosure Extended Handle| Load‑Handling Capability
- Description
- Specifications
- Documents
- Warranty
- Reviews
Description
About the Product
The Lauritz Knudsen C-Line Manual Changeover Switch FR3 250A 4P 415V AC with SS (stainless steel) enclosure is a heavy-duty & high-capacity switching solution designed for safe transfer of electrical load between two power sources such as mains supply & generator backup.
This model is equipped with a robust stainless steel enclosure that provides excellent protection against dust, moisture, corrosion, & environmental exposure. The extended handle allows safe & convenient external operation without opening the enclosure, enhancing operator safety & usability.
As part of the FR3 series, this switch is built for demanding industrial environments requiring reliable performance under high-load conditions. Its 4-pole (4P) configuration ensures complete isolation of all conductors including neutral, offering enhanced safety & dependable operation.
Purpose & Function
This enclosed manual changeover switch is designed for efficient & safe power management:
• Transfers load between mains supply & generator
• Provides complete electrical isolation during switching
• Enables safe external operation via extended handle
• Ensures uninterrupted power during source transitions
• Enhances system safety with enclosed design
Electrical Configuration
• Type: Manual Changeover Switch
• Series: C-Line FR3
• Current rating: 250A
• Rated voltage: 415V AC
• Poles: 4 Pole (4P)
• Enclosure: Stainless Steel (SS)
• Operation: Extended handle
• Function: Power source switching & isolation
Construction & Design
The switch is engineered for durability & heavy-duty applications:
• Stainless steel enclosure for corrosion resistance & strength
• Industrial-grade construction for long service life
• Extended handle for easy & safe external operation
• Compact yet robust design suitable for large panels
• High-quality contact system for consistent switching performance
Safety & Protection
• SS enclosure protects against dust, moisture, & external damage
• 4-pole configuration ensures complete circuit isolation
• Reduces risk of electrical faults & accidental contact
• Improves safety for operators & maintenance personnel
• Ensures reliable operation in harsh environments
Mounting & Installation
• Suitable for wall or panel mounting
• Enclosed design allows installation in exposed & semi-outdoor areas
• Extended handle enables operation without opening enclosure
• Compatible with standard industrial electrical systems
• Supports clean & organized internal wiring
Application Domains
• Industrial power distribution systems
• Commercial buildings & infrastructure
• Generator backup systems
• Outdoor & semi-outdoor installations
• Electrical control panels in harsh environments
• Manufacturing & processing plants
Key Features
• 250A current rating for high-load industrial applications
• 415V AC operation for three phase systems
• 4-pole configuration for complete electrical isolation
• Stainless steel enclosure for enhanced durability & protection
• Extended handle for safe external operation
• Heavy-duty & industrial-grade design
Applications
• Generator changeover panels
• Industrial distribution boards
• Commercial electrical systems
• Outdoor electrical setups
• Backup power management systems
FAQs
1. What is the advantage of an SS enclosure?
Ans: It provides protection against dust, moisture, corrosion, & physical damage, ensuring durability in harsh environments.
2. What does 4P mean?
Ans: 4P (four-pole) means all conductors including neutral are fully isolated for maximum safety.
3. What is the purpose of the extended handle?
Ans: It allows operation of the switch externally without opening the enclosure, improving safety & convenience.
4. Can this switch be used outdoors?
Ans: Yes, the SS enclosure makes it suitable for outdoor & semi-outdoor applications.
5. What is a manual changeover switch used for?
Ans: It is used to safely transfer power between two sources such as mains & generator.
6. Why is complete isolation important?
Ans: It ensures safe maintenance & operation by fully disconnecting the electrical circuit.
7. Is this suitable for industrial applications?
Ans: Yes, it is designed for heavy-duty industrial, commercial, & backup power systems.
Overview
| Rated Operational Current (A) | 250 |
|---|---|
| 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) | 16000 |
| Rated Insulation Voltage Ui (V) | 1000 |
| Short Time Withstand for 1sec (kA) | 16 |
| Rated Operational Power (kW) | 132 |
| Rated Breaking Capacity@AC-23A (A) | 2000 |
| Rated Making Capacity@AC-23A (A) | 2500 |
| Version | Manual, SS enclosure |
| No. of Poles | 4P |
| Electrical life (Operating Cylces) | 2000 |
| Mechanical Life (Operating Cycles) | 16000 |
| Maximum Al termination (sq.mm) | 185 |
| Standard Accessories | Terminal Shroud,Phase Barriers,Source Separator, Extended handle with shaft |
| Pollution Degree | 3 |
| Rated impulse withstand voltage (Uimp) | 12 |
| Discount Percentage | Between 0-10 % |
Documents
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 C-Line Manual Changeover Switch FR3 250A 4P 415V AC with SS (stainless steel) enclosure is a heavy-duty & high-capacity switching solution designed for safe transfer of electrical load between two power sources such as mains supply & generator backup.
This model is equipped with a robust stainless steel enclosure that provides excellent protection against dust, moisture, corrosion, & environmental exposure. The extended handle allows safe & convenient external operation without opening the enclosure, enhancing operator safety & usability.
As part of the FR3 series, this switch is built for demanding industrial environments requiring reliable performance under high-load conditions. Its 4-pole (4P) configuration ensures complete isolation of all conductors including neutral, offering enhanced safety & dependable operation.
Purpose & Function
This enclosed manual changeover switch is designed for efficient & safe power management:
• Transfers load between mains supply & generator
• Provides complete electrical isolation during switching
• Enables safe external operation via extended handle
• Ensures uninterrupted power during source transitions
• Enhances system safety with enclosed design
Electrical Configuration
• Type: Manual Changeover Switch
• Series: C-Line FR3
• Current rating: 250A
• Rated voltage: 415V AC
• Poles: 4 Pole (4P)
• Enclosure: Stainless Steel (SS)
• Operation: Extended handle
• Function: Power source switching & isolation
Construction & Design
The switch is engineered for durability & heavy-duty applications:
• Stainless steel enclosure for corrosion resistance & strength
• Industrial-grade construction for long service life
• Extended handle for easy & safe external operation
• Compact yet robust design suitable for large panels
• High-quality contact system for consistent switching performance
Safety & Protection
• SS enclosure protects against dust, moisture, & external damage
• 4-pole configuration ensures complete circuit isolation
• Reduces risk of electrical faults & accidental contact
• Improves safety for operators & maintenance personnel
• Ensures reliable operation in harsh environments
Mounting & Installation
• Suitable for wall or panel mounting
• Enclosed design allows installation in exposed & semi-outdoor areas
• Extended handle enables operation without opening enclosure
• Compatible with standard industrial electrical systems
• Supports clean & organized internal wiring
Application Domains
• Industrial power distribution systems
• Commercial buildings & infrastructure
• Generator backup systems
• Outdoor & semi-outdoor installations
• Electrical control panels in harsh environments
• Manufacturing & processing plants
Key Features
• 250A current rating for high-load industrial applications
• 415V AC operation for three phase systems
• 4-pole configuration for complete electrical isolation
• Stainless steel enclosure for enhanced durability & protection
• Extended handle for safe external operation
• Heavy-duty & industrial-grade design
Applications
• Generator changeover panels
• Industrial distribution boards
• Commercial electrical systems
• Outdoor electrical setups
• Backup power management systems
FAQs
1. What is the advantage of an SS enclosure?
Ans: It provides protection against dust, moisture, corrosion, & physical damage, ensuring durability in harsh environments.
2. What does 4P mean?
Ans: 4P (four-pole) means all conductors including neutral are fully isolated for maximum safety.
3. What is the purpose of the extended handle?
Ans: It allows operation of the switch externally without opening the enclosure, improving safety & convenience.
4. Can this switch be used outdoors?
Ans: Yes, the SS enclosure makes it suitable for outdoor & semi-outdoor applications.
5. What is a manual changeover switch used for?
Ans: It is used to safely transfer power between two sources such as mains & generator.
6. Why is complete isolation important?
Ans: It ensures safe maintenance & operation by fully disconnecting the electrical circuit.
7. Is this suitable for industrial applications?
Ans: Yes, it is designed for heavy-duty industrial, commercial, & backup power systems.
Overview
| Rated Operational Current (A) | 250 |
|---|---|
| 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) | 16000 |
| Rated Insulation Voltage Ui (V) | 1000 |
| Short Time Withstand for 1sec (kA) | 16 |
| Rated Operational Power (kW) | 132 |
| Rated Breaking Capacity@AC-23A (A) | 2000 |
| Rated Making Capacity@AC-23A (A) | 2500 |
| Version | Manual, SS enclosure |
| No. of Poles | 4P |
| Electrical life (Operating Cylces) | 2000 |
| Mechanical Life (Operating Cycles) | 16000 |
| Maximum Al termination (sq.mm) | 185 |
| Standard Accessories | Terminal Shroud,Phase Barriers,Source Separator, Extended handle with shaft |
| Pollution Degree | 3 |
| Rated impulse withstand voltage (Uimp) | 12 |
| Discount Percentage | Between 0-10 % |
Documents
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.