Lauritz Knudsen Capacitor Duty Contactors, MO C, 5kVAr, 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, 5kVAr, 240V AC | 3 Pole | 1 Built-in Auxiliary Contacts | AC-6b| Heavy‑Duty Contacts for Long‑Term Durability
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- Specifications
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- Warranty
- Reviews
Description
About the Product
The Lauritz Knudsen MO C Capacitor Duty Contactor 5kVAR 3P 440V AC (AC 6b) with In-Built 1NO Auxiliary Contact & 240V AC Coil (50–60 Hz) is a compact & efficient industrial switching device designed for precise control of small-capacity capacitor banks in power factor correction (PFC) systems. With a 5kVAR rating & a 3 pole configuration, it is ideal for low-capacity applications in industrial & commercial installations where space & efficiency are critical.
Designed for AC 6b duty applications, this contactor is specifically engineered for capacitive load switching, capable of handling inrush currents during capacitor energization. It incorporates pre-charge contact technology with damping resistors, which effectively limit surge currents, protect capacitor banks, & enhance overall system reliability & lifespan.
The integrated 1 normally open (1NO) auxiliary contact provides additional flexibility for automation, signaling, & control circuits, while the 240V AC coil (50–60 Hz) ensures compatibility with standard industrial control voltages. Built using 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:
• Switches small capacitor banks for improved power factor
• 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: 5kVAR
• 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 built-in auxiliary contact
• Designed for seamless integration into electrical panels
Application Domains
• Power factor correction (PFC) panels
• Small capacitor bank switching systems
• Industrial & commercial electrical installations
• Control & automation panels
• Energy efficiency systems
Key Features
• 5kVAR 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 design with inrush current control
Applications
• Small capacitor bank switching
• Power factor correction systems
• Industrial automation panels
• Energy-saving electrical installations
• Electrical distribution systems
FAQs
1. What is an AC 6b contactor?
Ans: An AC 6b contactor is designed specifically for switching capacitor banks & handling inrush currents safely.
2. Why use a 5kVAR capacitor duty contactor?
Ans: It is suitable for low-capacity PFC systems requiring compact & efficient capacitor switching.
3. What is the purpose of pre-charge resistors?
Ans: They reduce inrush current during capacitor energization to protect system components.
4. What is the function of a 1NO auxiliary contact?
Ans: It provides additional control, signaling, & automation capability.
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 circuits & reliable operation.
7. Is this suitable for motor control?
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 | 6.6A |
| Discount Percentage | Between 0-10 % |
| No. of Poles | 3P |
| Height(mm) | 87 |
| Width(mm) | 45 |
| Depth(mm) | 133.5 |
| Rated kW | 5kVAr |
| 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 5kVAR 3P 440V AC (AC 6b) with In-Built 1NO Auxiliary Contact & 240V AC Coil (50–60 Hz) is a compact & efficient industrial switching device designed for precise control of small-capacity capacitor banks in power factor correction (PFC) systems. With a 5kVAR rating & a 3 pole configuration, it is ideal for low-capacity applications in industrial & commercial installations where space & efficiency are critical.
Designed for AC 6b duty applications, this contactor is specifically engineered for capacitive load switching, capable of handling inrush currents during capacitor energization. It incorporates pre-charge contact technology with damping resistors, which effectively limit surge currents, protect capacitor banks, & enhance overall system reliability & lifespan.
The integrated 1 normally open (1NO) auxiliary contact provides additional flexibility for automation, signaling, & control circuits, while the 240V AC coil (50–60 Hz) ensures compatibility with standard industrial control voltages. Built using 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:
• Switches small capacitor banks for improved power factor
• 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: 5kVAR
• 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 built-in auxiliary contact
• Designed for seamless integration into electrical panels
Application Domains
• Power factor correction (PFC) panels
• Small capacitor bank switching systems
• Industrial & commercial electrical installations
• Control & automation panels
• Energy efficiency systems
Key Features
• 5kVAR 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 design with inrush current control
Applications
• Small capacitor bank switching
• Power factor correction systems
• Industrial automation panels
• Energy-saving electrical installations
• Electrical distribution systems
FAQs
1. What is an AC 6b contactor?
Ans: An AC 6b contactor is designed specifically for switching capacitor banks & handling inrush currents safely.
2. Why use a 5kVAR capacitor duty contactor?
Ans: It is suitable for low-capacity PFC systems requiring compact & efficient capacitor switching.
3. What is the purpose of pre-charge resistors?
Ans: They reduce inrush current during capacitor energization to protect system components.
4. What is the function of a 1NO auxiliary contact?
Ans: It provides additional control, signaling, & automation capability.
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 circuits & reliable operation.
7. Is this suitable for motor control?
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 | 6.6A |
| Discount Percentage | Between 0-10 % |
| No. of Poles | 3P |
| Height(mm) | 87 |
| Width(mm) | 45 |
| Depth(mm) | 133.5 |
| Rated kW | 5kVAr |
| 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.