Lauritz Knudsen Capacitor Duty Contactors, MO C, 30kVAr, 220V 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, 30kVAr, 220V AC | 3 Pole | 1 Built-in Auxiliary Contacts | AC-6b| Heavy‑Duty Contacts for Long‑Term Durability
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- Warranty
- Reviews
Description
About the Product
The Lauritz Knudsen MO C Capacitor Duty Contactor 30kVAR 3P 440V AC (AC 6b) with In-Built 1NO Auxiliary Contact & 220V AC Coil (50–60 Hz) is a heavy-duty industrial switching device engineered for efficient control of medium to high-capacity capacitor banks used in power factor correction (PFC) systems. With a 30kVAR rating & a 3 pole configuration, it is ideally suited for demanding industrial & commercial electrical installations.
Designed for AC 6b duty applications, this contactor is specifically built for capacitive load switching, capable of handling high inrush currents generated during capacitor energization. It features advanced pre-charge contact design with damping resistors, which effectively reduce surge currents, protect capacitor banks, & enhance overall system reliability & life expectancy.
The integrated 1 normally open (1NO) auxiliary contact provides added flexibility for automation, signaling, & control circuits, while the 220V AC coil (50–60 Hz) ensures compatibility with widely used industrial control voltages. Built using high-quality materials & precision engineering, this contactor delivers safe switching, excellent durability, & dependable performance in demanding operating environments.
Purpose & Function
This capacitor duty contactor is designed for efficient power factor correction systems:
• Switches capacitor banks for improved power factor
• Handles high inrush current during capacitor energization
• Reduces switching transients & electrical stress
• Supports automation in PFC panels
• Enhances energy efficiency & system performance
Electrical Configuration
• Product type: Capacitor Duty Contactor
• Model: MO C
• Rated capacity: 30kVAR
• Number of poles: 3P
• Voltage rating: 440V AC
• Utilization category: AC 6b (capacitor duty)
• Auxiliary contacts: In-built 1NO
• Coil voltage: 220V AC
• Frequency: 50–60 Hz
• Function: Capacitor bank switching & power factor correction
Construction & Design
Engineered for reliable capacitor switching operations:
• Special contact design optimized for capacitive loads
• Built-in pre-charge resistors for inrush current limitation
• Integrated auxiliary contact for control functionality
• Rugged & durable construction for industrial panels
• High mechanical & electrical endurance
Safety & Protection
• Minimizes inrush current during capacitor switching
• Protects capacitor banks & electrical systems
• Reduces voltage spikes & switching disturbances
• Enhances lifespan of electrical components
• Ensures safe & reliable switching operations
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 capacitor panels
Application Domains
• Power factor correction (PFC) panels
• Capacitor bank switching systems
• Industrial power distribution systems
• Electrical control panels
• Manufacturing & process plants
• Commercial electrical installations
Key Features
• 30kVAR capacitor duty contactor
• 3-pole configuration for three-phase systems
• AC 6b duty for capacitive loads
• In-built 1NO auxiliary contact
• 220V AC coil (50–60 Hz)
• Advanced inrush current limiting design
Applications
• Capacitor bank switching
• Power factor correction systems
• Industrial automation panels
• Energy efficiency improvement systems
• Electrical distribution networks
FAQs
1. What is an AC 6b contactor?
Ans: An AC 6b contactor is designed specifically for switching capacitor banks & handling high inrush currents safely.
2. Why use a 30kVAR capacitor duty contactor?
Ans: It is used for medium to high-capacity capacitor banks in industrial PFC panels.
3. What is the role of pre-charge resistors?
Ans: They limit the initial surge current during capacitor energization to protect equipment.
4. What is the function of a 1NO auxiliary contact?
Ans: It provides additional signaling & control functionality in automation systems.
5. Where is this contactor used?
Ans: It is used in PFC panels, industrial systems, & capacitor bank installations.
6. What is the advantage of a 220V coil?
Ans: It ensures compatibility with standard control voltages & reliable system 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 | 220 V AC |
| Rated operational current at 415V | 39.4A |
| Discount Percentage | Between 0-10 % |
| No. of Poles | 3P |
| Height(mm) | 115 |
| Width(mm) | 56 |
| Depth(mm) | 133.5 |
| Rated kW | 30kVAr |
| 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 30kVAR 3P 440V AC (AC 6b) with In-Built 1NO Auxiliary Contact & 220V AC Coil (50–60 Hz) is a heavy-duty industrial switching device engineered for efficient control of medium to high-capacity capacitor banks used in power factor correction (PFC) systems. With a 30kVAR rating & a 3 pole configuration, it is ideally suited for demanding industrial & commercial electrical installations.
Designed for AC 6b duty applications, this contactor is specifically built for capacitive load switching, capable of handling high inrush currents generated during capacitor energization. It features advanced pre-charge contact design with damping resistors, which effectively reduce surge currents, protect capacitor banks, & enhance overall system reliability & life expectancy.
The integrated 1 normally open (1NO) auxiliary contact provides added flexibility for automation, signaling, & control circuits, while the 220V AC coil (50–60 Hz) ensures compatibility with widely used industrial control voltages. Built using high-quality materials & precision engineering, this contactor delivers safe switching, excellent durability, & dependable performance in demanding operating environments.
Purpose & Function
This capacitor duty contactor is designed for efficient power factor correction systems:
• Switches capacitor banks for improved power factor
• Handles high inrush current during capacitor energization
• Reduces switching transients & electrical stress
• Supports automation in PFC panels
• Enhances energy efficiency & system performance
Electrical Configuration
• Product type: Capacitor Duty Contactor
• Model: MO C
• Rated capacity: 30kVAR
• Number of poles: 3P
• Voltage rating: 440V AC
• Utilization category: AC 6b (capacitor duty)
• Auxiliary contacts: In-built 1NO
• Coil voltage: 220V AC
• Frequency: 50–60 Hz
• Function: Capacitor bank switching & power factor correction
Construction & Design
Engineered for reliable capacitor switching operations:
• Special contact design optimized for capacitive loads
• Built-in pre-charge resistors for inrush current limitation
• Integrated auxiliary contact for control functionality
• Rugged & durable construction for industrial panels
• High mechanical & electrical endurance
Safety & Protection
• Minimizes inrush current during capacitor switching
• Protects capacitor banks & electrical systems
• Reduces voltage spikes & switching disturbances
• Enhances lifespan of electrical components
• Ensures safe & reliable switching operations
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 capacitor panels
Application Domains
• Power factor correction (PFC) panels
• Capacitor bank switching systems
• Industrial power distribution systems
• Electrical control panels
• Manufacturing & process plants
• Commercial electrical installations
Key Features
• 30kVAR capacitor duty contactor
• 3-pole configuration for three-phase systems
• AC 6b duty for capacitive loads
• In-built 1NO auxiliary contact
• 220V AC coil (50–60 Hz)
• Advanced inrush current limiting design
Applications
• Capacitor bank switching
• Power factor correction systems
• Industrial automation panels
• Energy efficiency improvement systems
• Electrical distribution networks
FAQs
1. What is an AC 6b contactor?
Ans: An AC 6b contactor is designed specifically for switching capacitor banks & handling high inrush currents safely.
2. Why use a 30kVAR capacitor duty contactor?
Ans: It is used for medium to high-capacity capacitor banks in industrial PFC panels.
3. What is the role of pre-charge resistors?
Ans: They limit the initial surge current during capacitor energization to protect equipment.
4. What is the function of a 1NO auxiliary contact?
Ans: It provides additional signaling & control functionality in automation systems.
5. Where is this contactor used?
Ans: It is used in PFC panels, industrial systems, & capacitor bank installations.
6. What is the advantage of a 220V coil?
Ans: It ensures compatibility with standard control voltages & reliable system 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 | 220 V AC |
| Rated operational current at 415V | 39.4A |
| Discount Percentage | Between 0-10 % |
| No. of Poles | 3P |
| Height(mm) | 115 |
| Width(mm) | 56 |
| Depth(mm) | 133.5 |
| Rated kW | 30kVAr |
| 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.