Lauritz Knudsen MCX Power Contactor 255A, 4 Pole, 415V AC | AC1 Rating - 240A | with 2 Inbuilt + 2 in auxilary contacts | 50/60 Hz | Electrical Coil
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Lauritz Knudsen MCX Power Contactor 255A, 4 Pole, 415V AC | AC1 Rating - 240A | with 2 Inbuilt + 2 in auxilary contacts | 50/60 Hz | Electrical Coil
- Description
- Specifications
- Documents
- Warranty
- Reviews
Description
About the Product
The Lauritz Knudsen MCX Contactor 255A 4P 415V AC (AC 1) with In-Built 2NO + 2NC & 240V AC Coil (50–60 Hz) is an ultra high-capacity switching device engineered to deliver reliable control of large electrical loads in demanding industrial & commercial environments. With a 255A current rating & a 4 pole configuration, it is ideal for high-power multi-phase systems & mission-critical applications requiring robust performance.
This model features integrated auxiliary contacts (2 normally open + 2 normally closed), eliminating the need for additional auxiliary blocks while providing enhanced functionality for control, interlocking, & signaling. Designed for AC 1 duty applications, it is suitable for switching resistive & non-inductive loads, such as heating systems, power distribution networks, & heavy-duty electrical circuits.
The 240V AC coil ensures compatibility with commonly used control voltage systems, enabling stable, efficient, & consistent operation. Built using high-quality materials & precision engineering, it offers extended service life, dependable switching performance, & superior durability even in harsh industrial environments.
Purpose & Function
This contactor is designed for ultra high-capacity switching & advanced control:
• Enables safe switching of very high-capacity electrical circuits
• Controls resistive loads under AC 1 utilization category
• Provides built-in auxiliary contacts for signaling & interlocking
• Enhances automation system monitoring & feedback
• Improves system efficiency, safety, & operational reliability
Electrical Configuration
• Product type: Contactor
• Model: MCX
• Rated current: 255A
• Number of poles: 4P
• Voltage rating: 415V AC
• Utilization category: AC 1 (resistive loads)
• Auxiliary contacts: In-built 2NO + 2NC
• Coil voltage: 240V AC
• Frequency: 50–60 Hz
• Function: Electrical switching, signaling, & load control
Construction & Design
Engineered for extreme industrial applications:
• High-quality contacts for superior conductivity & performance
• Integrated auxiliary contacts reduce need for additional components
• Heavy-duty construction ensures long operational life
• Compact & modular design for efficient panel integration
• Precision-engineered mechanism for reliable & consistent switching
Safety & Protection
• Ensures safe operation under extreme load conditions
• Reduces risk of electrical faults & equipment damage
• Provides accurate operational feedback through auxiliary contacts
• Enhances safety in control, interlocking, & monitoring systems
• Improves overall system reliability & stability
Mounting & Installation
• Designed for panel mounting in industrial applications
• Compact design optimizes control panel space utilization
• Simplified wiring with built-in auxiliary contacts
• Quick & secure installation process
• Ensures stable & reliable electrical connections
Application Domains
• Heavy industrial control panels
• Automation & PLC systems
• Power distribution networks
• Ultra high-capacity resistive load switching
• Infrastructure & large commercial installations
• Electrical control & protection systems
Key Features
• 255A rated MCX contactor
• 4-pole configuration for ultra high-load applications
• In-built 2NO + 2NC auxiliary contacts
• 240V AC coil (50–60 Hz)
• Ultra heavy-duty & reliable industrial design
Applications
• Ultra high-capacity load switching
• Industrial automation & process control
• Large power distribution systems
• Interlocking & signaling circuits
• Heating & heavy electrical load management
FAQs
1. What is a contactor?
Ans: A contactor is an electrical switch used to control high-power circuits safely & efficiently.
2. What does 2NO + 2NC mean?
Ans: It refers to two normally open & two normally closed auxiliary contacts used for control, signaling, & interlocking.
3. What is AC 1 duty?
Ans: AC 1 refers to switching resistive or non-inductive loads such as heating systems & power distribution circuits.
4. What is the coil voltage?
Ans: This model operates with a 240V AC control coil.
5. Where is this contactor used?
Ans: It is used in heavy industrial applications, automation systems, & large power distribution panels.
6. What is the benefit of built-in auxiliary contacts?
Ans: They reduce installation complexity & improve control, feedback, & monitoring capabilities.
7. Is installation easy?
Ans: Yes, it is designed for quick & secure installation in industrial control panels.
Overview
| Ambient temperature | -20 to 60 degree C |
|---|---|
| Rated impulse withstand voltage (Uimp) | 8kV |
| Rated Insulation Voltage Ui (V) | 1000V |
| Conformance to Standards | IS/IEC 6094741, IEC 6094741 |
| Coil Voltage | 240 V AC |
| Rated operational current at 415V | 255A (AC1) |
| Discount Percentage | Between 0-10 % |
| No. of Poles | 4P |
| Height(mm) | 175 |
| Width(mm) | 183.5 |
| Depth(mm) | 152 |
| Coil Operating band %Uc (Pick up) | 80 - 110 % |
| Coil Operating band %Uc (Drop off) | 35 - 65 % |
| Pick up VA consumption | 550VA |
| Hold on VA consumption | 36VA |
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 MCX Contactor 255A 4P 415V AC (AC 1) with In-Built 2NO + 2NC & 240V AC Coil (50–60 Hz) is an ultra high-capacity switching device engineered to deliver reliable control of large electrical loads in demanding industrial & commercial environments. With a 255A current rating & a 4 pole configuration, it is ideal for high-power multi-phase systems & mission-critical applications requiring robust performance.
This model features integrated auxiliary contacts (2 normally open + 2 normally closed), eliminating the need for additional auxiliary blocks while providing enhanced functionality for control, interlocking, & signaling. Designed for AC 1 duty applications, it is suitable for switching resistive & non-inductive loads, such as heating systems, power distribution networks, & heavy-duty electrical circuits.
The 240V AC coil ensures compatibility with commonly used control voltage systems, enabling stable, efficient, & consistent operation. Built using high-quality materials & precision engineering, it offers extended service life, dependable switching performance, & superior durability even in harsh industrial environments.
Purpose & Function
This contactor is designed for ultra high-capacity switching & advanced control:
• Enables safe switching of very high-capacity electrical circuits
• Controls resistive loads under AC 1 utilization category
• Provides built-in auxiliary contacts for signaling & interlocking
• Enhances automation system monitoring & feedback
• Improves system efficiency, safety, & operational reliability
Electrical Configuration
• Product type: Contactor
• Model: MCX
• Rated current: 255A
• Number of poles: 4P
• Voltage rating: 415V AC
• Utilization category: AC 1 (resistive loads)
• Auxiliary contacts: In-built 2NO + 2NC
• Coil voltage: 240V AC
• Frequency: 50–60 Hz
• Function: Electrical switching, signaling, & load control
Construction & Design
Engineered for extreme industrial applications:
• High-quality contacts for superior conductivity & performance
• Integrated auxiliary contacts reduce need for additional components
• Heavy-duty construction ensures long operational life
• Compact & modular design for efficient panel integration
• Precision-engineered mechanism for reliable & consistent switching
Safety & Protection
• Ensures safe operation under extreme load conditions
• Reduces risk of electrical faults & equipment damage
• Provides accurate operational feedback through auxiliary contacts
• Enhances safety in control, interlocking, & monitoring systems
• Improves overall system reliability & stability
Mounting & Installation
• Designed for panel mounting in industrial applications
• Compact design optimizes control panel space utilization
• Simplified wiring with built-in auxiliary contacts
• Quick & secure installation process
• Ensures stable & reliable electrical connections
Application Domains
• Heavy industrial control panels
• Automation & PLC systems
• Power distribution networks
• Ultra high-capacity resistive load switching
• Infrastructure & large commercial installations
• Electrical control & protection systems
Key Features
• 255A rated MCX contactor
• 4-pole configuration for ultra high-load applications
• In-built 2NO + 2NC auxiliary contacts
• 240V AC coil (50–60 Hz)
• Ultra heavy-duty & reliable industrial design
Applications
• Ultra high-capacity load switching
• Industrial automation & process control
• Large power distribution systems
• Interlocking & signaling circuits
• Heating & heavy electrical load management
FAQs
1. What is a contactor?
Ans: A contactor is an electrical switch used to control high-power circuits safely & efficiently.
2. What does 2NO + 2NC mean?
Ans: It refers to two normally open & two normally closed auxiliary contacts used for control, signaling, & interlocking.
3. What is AC 1 duty?
Ans: AC 1 refers to switching resistive or non-inductive loads such as heating systems & power distribution circuits.
4. What is the coil voltage?
Ans: This model operates with a 240V AC control coil.
5. Where is this contactor used?
Ans: It is used in heavy industrial applications, automation systems, & large power distribution panels.
6. What is the benefit of built-in auxiliary contacts?
Ans: They reduce installation complexity & improve control, feedback, & monitoring capabilities.
7. Is installation easy?
Ans: Yes, it is designed for quick & secure installation in industrial control panels.
Overview
| Ambient temperature | -20 to 60 degree C |
|---|---|
| Rated impulse withstand voltage (Uimp) | 8kV |
| Rated Insulation Voltage Ui (V) | 1000V |
| Conformance to Standards | IS/IEC 6094741, IEC 6094741 |
| Coil Voltage | 240 V AC |
| Rated operational current at 415V | 255A (AC1) |
| Discount Percentage | Between 0-10 % |
| No. of Poles | 4P |
| Height(mm) | 175 |
| Width(mm) | 183.5 |
| Depth(mm) | 152 |
| Coil Operating band %Uc (Pick up) | 80 - 110 % |
| Coil Operating band %Uc (Drop off) | 35 - 65 % |
| Pick up VA consumption | 550VA |
| Hold on VA consumption | 36VA |
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.