Lauritz Knudsen Capacitor Duty Contactors, MO C, 3kVAr, 240V AC | 3 Pole | 1 Built-in Auxiliary Contacts | AC-6b| Heavy‑Duty Contacts for Long‑Term Durability
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Lauritz Knudsen Capacitor Duty Contactors, MO C, 3kVAr, 240V AC | 3 Pole | 1 Built-in Auxiliary Contacts | AC-6b| Heavy‑Duty Contacts for Long‑Term Durability
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- Specifications
- Warranty
- Reviews
Description
About the Product
The Lauritz Knudsen MO C Capacitor Duty Contactor 3kVAR 3P 440V AC (AC 6b) with In-Built 1NO Auxiliary Contact & 240V AC Coil (50–60 Hz) is a compact & specialized switching device engineered for efficient control of small-capacity capacitor banks used in power factor correction (PFC) systems. With a 3kVAR rating & a 3 pole configuration, it is ideally suited for low-capacity applications in industrial & commercial installations where compactness & efficiency are essential.
Designed for AC 6b duty applications, this contactor is specifically built for capacitive load switching, capable of handling inrush currents generated during capacitor energization. It features pre-charge contact technology with damping resistors, which help limit inrush current, protect capacitor banks, & enhance overall system reliability & lifespan.
The integrated 1 normally open (1NO) auxiliary contact provides added flexibility for automation, signaling, & control circuits, while the 240V AC coil (50–60 Hz) ensures compatibility with widely used industrial control voltages. Built with high-quality materials & precision engineering, this contactor delivers safe switching, durability, & consistent performance in demanding electrical environments.
Purpose & Function
This capacitor duty contactor is designed for low-capacity power factor correction systems:
• Switches small capacitor banks for power factor improvement
• Handles inrush current during capacitor energization
• Reduces switching transients & electrical stress
• Supports automation in PFC panels
• Enhances energy efficiency in electrical systems
Electrical Configuration
• Product type: Capacitor Duty Contactor
• Model: MO C
• Rated capacity: 3kVAR
• Number of poles: 3P
• Voltage rating: 440V AC
• Utilization category: AC 6b (capacitor duty)
• Auxiliary contacts: In-built 1NO
• Coil voltage: 240V AC
• Frequency: 50–60 Hz
• Function: Capacitor bank switching & power factor correction
Construction & Design
Engineered for compact capacitor switching applications:
• Special contact design optimized for capacitive loads
• Built-in pre-charge resistors for inrush current limitation
• Integrated auxiliary contact for control functionality
• Compact & space-saving construction
• High electrical & mechanical endurance
Safety & Protection
• Minimizes inrush current during capacitor switching
• Protects capacitor banks & electrical systems
• Reduces voltage spikes & transient disturbances
• Enhances lifespan of electrical components
• Ensures safe & reliable switching operation
Mounting & Installation
• Suitable for panel mounting in PFC systems
• Compact design for efficient space utilization
• Easy & secure installation process
• Simplified wiring with in-built auxiliary contact
• Designed for seamless integration into electrical panels
Application Domains
• Power factor correction (PFC) panels
• Small capacitor bank switching systems
• Industrial & commercial electrical systems
• Control panels & automation systems
• Energy efficiency applications
Key Features
• 3kVAR capacitor duty contactor
• 3-pole configuration for three-phase systems
• AC 6b duty for capacitive loads
• In-built 1NO auxiliary contact
• 240V AC coil (50–60 Hz)
• Compact & efficient inrush current limiting design
Applications
• Small capacitor bank switching
• Power factor correction systems
• Industrial automation panels
• Energy-saving electrical installations
• Electrical distribution panels
FAQs
1. What is an AC 6b contactor?
Ans: An AC 6b contactor is specifically designed for capacitor bank switching & handling inrush currents safely.
2. Why use a 3kVAR capacitor duty contactor?
Ans: It is suitable for small-capacity PFC systems where efficient & compact switching is required.
3. What is the purpose of pre-charge resistors?
Ans: They reduce the inrush current during capacitor energization to protect the system.
4. What is the function of a 1NO auxiliary contact?
Ans: It enables additional signaling & control functions in automation systems.
5. Where is this contactor used?
Ans: It is used in PFC panels, small electrical systems, & control panels.
6. What is the advantage of a 240V coil?
Ans: It ensures compatibility with standard industrial control voltages.
7. Is this suitable for motor applications?
Ans: No, it is specifically designed for capacitor switching applications.
Overview
| Ambient temperature | -5 to 55 degree C |
|---|---|
| Mechanical Life (No. of operating cycles) | 240 Operations/Hr |
| Rated impulse withstand voltage (Uimp) | 8kV |
| Rated Insulation Voltage Ui (V) | 1000V |
| Conformance to Standards | IS/IEC 6094741, IEC 6094741, EN 6094741 |
| Coil Voltage | 240 V AC |
| Rated operational current at 415V | 3.9A |
| Discount Percentage | Between 0-10 % |
| No. of Poles | 3P |
| Height(mm) | 87 |
| Width(mm) | 45 |
| Depth(mm) | 133.5 |
| Rated kW | 3kVAr |
| Coil Operating band %Uc (Pick up) | 65 - 110 % |
| Mechanical Life | 10 million |
| Coil Operating band %Uc (Drop off) | 35 - 65 % |
| Pick up VA consumption | 77VA |
| Hold on VA consumption | 9VA |
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 MO C Capacitor Duty Contactor 3kVAR 3P 440V AC (AC 6b) with In-Built 1NO Auxiliary Contact & 240V AC Coil (50–60 Hz) is a compact & specialized switching device engineered for efficient control of small-capacity capacitor banks used in power factor correction (PFC) systems. With a 3kVAR rating & a 3 pole configuration, it is ideally suited for low-capacity applications in industrial & commercial installations where compactness & efficiency are essential.
Designed for AC 6b duty applications, this contactor is specifically built for capacitive load switching, capable of handling inrush currents generated during capacitor energization. It features pre-charge contact technology with damping resistors, which help limit inrush current, protect capacitor banks, & enhance overall system reliability & lifespan.
The integrated 1 normally open (1NO) auxiliary contact provides added flexibility for automation, signaling, & control circuits, while the 240V AC coil (50–60 Hz) ensures compatibility with widely used industrial control voltages. Built with high-quality materials & precision engineering, this contactor delivers safe switching, durability, & consistent performance in demanding electrical environments.
Purpose & Function
This capacitor duty contactor is designed for low-capacity power factor correction systems:
• Switches small capacitor banks for power factor improvement
• Handles inrush current during capacitor energization
• Reduces switching transients & electrical stress
• Supports automation in PFC panels
• Enhances energy efficiency in electrical systems
Electrical Configuration
• Product type: Capacitor Duty Contactor
• Model: MO C
• Rated capacity: 3kVAR
• Number of poles: 3P
• Voltage rating: 440V AC
• Utilization category: AC 6b (capacitor duty)
• Auxiliary contacts: In-built 1NO
• Coil voltage: 240V AC
• Frequency: 50–60 Hz
• Function: Capacitor bank switching & power factor correction
Construction & Design
Engineered for compact capacitor switching applications:
• Special contact design optimized for capacitive loads
• Built-in pre-charge resistors for inrush current limitation
• Integrated auxiliary contact for control functionality
• Compact & space-saving construction
• High electrical & mechanical endurance
Safety & Protection
• Minimizes inrush current during capacitor switching
• Protects capacitor banks & electrical systems
• Reduces voltage spikes & transient disturbances
• Enhances lifespan of electrical components
• Ensures safe & reliable switching operation
Mounting & Installation
• Suitable for panel mounting in PFC systems
• Compact design for efficient space utilization
• Easy & secure installation process
• Simplified wiring with in-built auxiliary contact
• Designed for seamless integration into electrical panels
Application Domains
• Power factor correction (PFC) panels
• Small capacitor bank switching systems
• Industrial & commercial electrical systems
• Control panels & automation systems
• Energy efficiency applications
Key Features
• 3kVAR capacitor duty contactor
• 3-pole configuration for three-phase systems
• AC 6b duty for capacitive loads
• In-built 1NO auxiliary contact
• 240V AC coil (50–60 Hz)
• Compact & efficient inrush current limiting design
Applications
• Small capacitor bank switching
• Power factor correction systems
• Industrial automation panels
• Energy-saving electrical installations
• Electrical distribution panels
FAQs
1. What is an AC 6b contactor?
Ans: An AC 6b contactor is specifically designed for capacitor bank switching & handling inrush currents safely.
2. Why use a 3kVAR capacitor duty contactor?
Ans: It is suitable for small-capacity PFC systems where efficient & compact switching is required.
3. What is the purpose of pre-charge resistors?
Ans: They reduce the inrush current during capacitor energization to protect the system.
4. What is the function of a 1NO auxiliary contact?
Ans: It enables additional signaling & control functions in automation systems.
5. Where is this contactor used?
Ans: It is used in PFC panels, small electrical systems, & control panels.
6. What is the advantage of a 240V coil?
Ans: It ensures compatibility with standard industrial control voltages.
7. Is this suitable for motor applications?
Ans: No, it is specifically designed for capacitor switching applications.
Overview
| Ambient temperature | -5 to 55 degree C |
|---|---|
| Mechanical Life (No. of operating cycles) | 240 Operations/Hr |
| Rated impulse withstand voltage (Uimp) | 8kV |
| Rated Insulation Voltage Ui (V) | 1000V |
| Conformance to Standards | IS/IEC 6094741, IEC 6094741, EN 6094741 |
| Coil Voltage | 240 V AC |
| Rated operational current at 415V | 3.9A |
| Discount Percentage | Between 0-10 % |
| No. of Poles | 3P |
| Height(mm) | 87 |
| Width(mm) | 45 |
| Depth(mm) | 133.5 |
| Rated kW | 3kVAr |
| Coil Operating band %Uc (Pick up) | 65 - 110 % |
| Mechanical Life | 10 million |
| Coil Operating band %Uc (Drop off) | 35 - 65 % |
| Pick up VA consumption | 77VA |
| Hold on VA consumption | 9VA |
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.