Lauritz Knudsen DN3-400D, MCCB, 4 Pole, 415V AC, 36kA Breaking Capacity, 400A | Microprocessor Release MTX1.0 | IP40 Protection
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Lauritz Knudsen DN3-400D, MCCB, 4 Pole, 415V AC, 36kA Breaking Capacity, 400A | Microprocessor Release MTX1.0 | IP40 Protection
- Description
- Specifications
- Documents
- Warranty
- Reviews
Description
About the Product
The Lauritz Knudsen DN3-400D MCCB 400A 4 Pole 415V AC 36kA MTX1.0 Thermal Magnetic is a robust molded case circuit breaker engineered to provide reliable protection for high-capacity electrical distribution systems. Designed to safeguard circuits against overloads & short-circuit faults, it helps protect electrical equipment, motors, transformers, cables, switchboards, & distribution networks from damage caused by abnormal operating conditions.
Featuring a 400A rated current, 4 Pole configuration, 415V AC operating voltage, & a 36kA short-circuit breaking capacity, this MCCB is suitable for industrial facilities, commercial buildings, utility installations, infrastructure projects, & critical power distribution applications where neutral isolation is required.
The integrated MTX1.0 thermal magnetic trip unit combines thermal overload protection & instantaneous magnetic short-circuit protection, ensuring reliable fault interruption, enhanced operational safety, & dependable electrical system performance.
How the Mechanism Works
The product functions by:
• Protecting circuits against overload conditions
• Interrupting short-circuit fault currents
• Automatically disconnecting faulty circuits
• Protecting motors, transformers, cables, & equipment
• Providing simultaneous phase & neutral isolation
• Supporting safe & reliable power distribution
• Reducing risks of electrical damage
• Delivering dependable fault-clearing performance
It serves as a critical protection device for maintaining the safety & continuity of electrical distribution systems.
Electrical Configuration
• Product Type: Molded Case Circuit Breaker (MCCB)
• Series: DN3-400D
• Current Rating: 400A
• Pole Configuration: 4 Pole
• Rated Voltage: 415V AC
• Frequency: 50/60 Hz
• Breaking Capacity: 36kA
• Trip Unit: MTX1.0 Thermal Magnetic
• Application: Circuit Protection & Switching
• Suitable For: Three-Phase Electrical Systems with Neutral Protection
• Catalog Number: CM93003OOOOX1
Construction & Design
Designed for dependable protection:
• MTX1.0 thermal magnetic trip mechanism
• 400A rated current capacity
• 4-pole protection configuration
• 36kA short-circuit breaking capability
• Durable molded case construction
• Reliable contact system
• Industrial-grade design
• Long operational lifespan
Safety & Protection
• Reliable overload protection
• Fast short-circuit interruption
• High fault-clearing capability
• Enhanced electrical safety
• Improved equipment protection
• Complete phase & neutral isolation
• Reduced operational downtime
• Long-term system reliability
Mounting & Durability
• Suitable for electrical distribution panels
• Compatible with industrial & commercial switchboards
• Rugged molded case construction
• High mechanical endurance
• Quality manufacturing standards
• Designed for continuous operation
• Low maintenance requirements
• Suitable for demanding environments
Application Domains
• Industrial Facilities
• Manufacturing Plants
• Commercial Buildings
• Utility Installations
• Infrastructure Projects
• Data Centers
• Electrical Distribution Panels
• Power Management Systems
Key Features
• DN3-400D MCCB series
• 400A current rating
• 4 Pole configuration
• 415V AC operation
• 36kA breaking capacity
• MTX1.0 thermal magnetic trip unit
• Overload protection
• Short-circuit protection
• Neutral isolation capability
• Durable molded case construction
Applications
• Three-phase power distribution
• Main incomer protection
• Industrial machinery protection
• Transformer protection
• Commercial electrical systems
• Utility power networks
• Infrastructure electrical projects
• Equipment circuit protection
FAQs
1. What is the CM93003OOOOX1 MCCB used for?
Ans: It is used for protecting electrical circuits & connected equipment against overloads & short circuits in three-phase electrical systems requiring neutral protection.
2. What is the current rating of this MCCB?
Ans: The MCCB is rated at 400A.
3. What does 4 Pole mean?
Ans: A 4 Pole MCCB protects & switches all three phase conductors along with the neutral conductor.
4. What is the breaking capacity of this MCCB?
Ans: It offers a 36kA short-circuit breaking capacity, allowing safe interruption of high fault currents.
5. What is the MTX1.0 trip unit?
Ans: The MTX1.0 thermal magnetic trip unit provides thermal overload protection & instantaneous magnetic protection against short circuits.
6. Where can this MCCB be installed?
Ans: It can be installed in electrical distribution panels, industrial switchboards, commercial facilities, utility installations, & infrastructure projects.
7. Why choose a 4 Pole MCCB?
Ans: A 4 Pole MCCB provides complete isolation of all phases & the neutral conductor, improving electrical safety, maintenance efficiency, & operational reliability.
8. Does it require frequent maintenance?
Ans: No, its durable construction & reliable protective mechanism ensure long-term, low-maintenance operation under normal operating conditions.
Overview
| Rated Operational Current | 400 |
|---|---|
| Mechanical Life (No. of operating cycles) | 15000 |
| No. of Poles | 4P |
| Rated Operational voltage (Ue) | 415V AC |
| Rated Insulation Voltage Ui (V) | 800 V |
| Conformance to Standards | IEC 60947-1, EN 60947-1, IS/IEC 60947-1 IEC 60947-2, EN 60947-2, IS/IEC 60947-2 IEC 60947-3, EN 60947-3, IS/IEC 60947-3 IEC 60947-4, EN 60947-4, IS/IEC 60947-4 |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Operational Frequency (Hz) | 50/60 Hz |
| Release Type | MTX1.0 |
| Rated Short Circuit Breaking capacity Icu(kA) | DN3-400D MCCB 400 4P 415V AC 36kA MTX1.0 50/60 Hz |
| Rated Sevice circuit breaking capacity (Ics as % of Icu) @415VAC | 36kA |
| Ambient temperature | -5°C to 55°C |
| Suitable for isolation | Yes |
| Load-line bias | No |
| Electrical Life (Operating Cycles) | 4000 |
| IP Protection | IP40 |
| Pollution Degree | III |
| Width(mm) | 183.5 |
| Height(mm) | 266 |
| Depth(mm) | 111.5 |
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 DN3-400D MCCB 400A 4 Pole 415V AC 36kA MTX1.0 Thermal Magnetic is a robust molded case circuit breaker engineered to provide reliable protection for high-capacity electrical distribution systems. Designed to safeguard circuits against overloads & short-circuit faults, it helps protect electrical equipment, motors, transformers, cables, switchboards, & distribution networks from damage caused by abnormal operating conditions.
Featuring a 400A rated current, 4 Pole configuration, 415V AC operating voltage, & a 36kA short-circuit breaking capacity, this MCCB is suitable for industrial facilities, commercial buildings, utility installations, infrastructure projects, & critical power distribution applications where neutral isolation is required.
The integrated MTX1.0 thermal magnetic trip unit combines thermal overload protection & instantaneous magnetic short-circuit protection, ensuring reliable fault interruption, enhanced operational safety, & dependable electrical system performance.
How the Mechanism Works
The product functions by:
• Protecting circuits against overload conditions
• Interrupting short-circuit fault currents
• Automatically disconnecting faulty circuits
• Protecting motors, transformers, cables, & equipment
• Providing simultaneous phase & neutral isolation
• Supporting safe & reliable power distribution
• Reducing risks of electrical damage
• Delivering dependable fault-clearing performance
It serves as a critical protection device for maintaining the safety & continuity of electrical distribution systems.
Electrical Configuration
• Product Type: Molded Case Circuit Breaker (MCCB)
• Series: DN3-400D
• Current Rating: 400A
• Pole Configuration: 4 Pole
• Rated Voltage: 415V AC
• Frequency: 50/60 Hz
• Breaking Capacity: 36kA
• Trip Unit: MTX1.0 Thermal Magnetic
• Application: Circuit Protection & Switching
• Suitable For: Three-Phase Electrical Systems with Neutral Protection
• Catalog Number: CM93003OOOOX1
Construction & Design
Designed for dependable protection:
• MTX1.0 thermal magnetic trip mechanism
• 400A rated current capacity
• 4-pole protection configuration
• 36kA short-circuit breaking capability
• Durable molded case construction
• Reliable contact system
• Industrial-grade design
• Long operational lifespan
Safety & Protection
• Reliable overload protection
• Fast short-circuit interruption
• High fault-clearing capability
• Enhanced electrical safety
• Improved equipment protection
• Complete phase & neutral isolation
• Reduced operational downtime
• Long-term system reliability
Mounting & Durability
• Suitable for electrical distribution panels
• Compatible with industrial & commercial switchboards
• Rugged molded case construction
• High mechanical endurance
• Quality manufacturing standards
• Designed for continuous operation
• Low maintenance requirements
• Suitable for demanding environments
Application Domains
• Industrial Facilities
• Manufacturing Plants
• Commercial Buildings
• Utility Installations
• Infrastructure Projects
• Data Centers
• Electrical Distribution Panels
• Power Management Systems
Key Features
• DN3-400D MCCB series
• 400A current rating
• 4 Pole configuration
• 415V AC operation
• 36kA breaking capacity
• MTX1.0 thermal magnetic trip unit
• Overload protection
• Short-circuit protection
• Neutral isolation capability
• Durable molded case construction
Applications
• Three-phase power distribution
• Main incomer protection
• Industrial machinery protection
• Transformer protection
• Commercial electrical systems
• Utility power networks
• Infrastructure electrical projects
• Equipment circuit protection
FAQs
1. What is the CM93003OOOOX1 MCCB used for?
Ans: It is used for protecting electrical circuits & connected equipment against overloads & short circuits in three-phase electrical systems requiring neutral protection.
2. What is the current rating of this MCCB?
Ans: The MCCB is rated at 400A.
3. What does 4 Pole mean?
Ans: A 4 Pole MCCB protects & switches all three phase conductors along with the neutral conductor.
4. What is the breaking capacity of this MCCB?
Ans: It offers a 36kA short-circuit breaking capacity, allowing safe interruption of high fault currents.
5. What is the MTX1.0 trip unit?
Ans: The MTX1.0 thermal magnetic trip unit provides thermal overload protection & instantaneous magnetic protection against short circuits.
6. Where can this MCCB be installed?
Ans: It can be installed in electrical distribution panels, industrial switchboards, commercial facilities, utility installations, & infrastructure projects.
7. Why choose a 4 Pole MCCB?
Ans: A 4 Pole MCCB provides complete isolation of all phases & the neutral conductor, improving electrical safety, maintenance efficiency, & operational reliability.
8. Does it require frequent maintenance?
Ans: No, its durable construction & reliable protective mechanism ensure long-term, low-maintenance operation under normal operating conditions.
Overview
| Rated Operational Current | 400 |
|---|---|
| Mechanical Life (No. of operating cycles) | 15000 |
| No. of Poles | 4P |
| Rated Operational voltage (Ue) | 415V AC |
| Rated Insulation Voltage Ui (V) | 800 V |
| Conformance to Standards | IEC 60947-1, EN 60947-1, IS/IEC 60947-1 IEC 60947-2, EN 60947-2, IS/IEC 60947-2 IEC 60947-3, EN 60947-3, IS/IEC 60947-3 IEC 60947-4, EN 60947-4, IS/IEC 60947-4 |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Operational Frequency (Hz) | 50/60 Hz |
| Release Type | MTX1.0 |
| Rated Short Circuit Breaking capacity Icu(kA) | DN3-400D MCCB 400 4P 415V AC 36kA MTX1.0 50/60 Hz |
| Rated Sevice circuit breaking capacity (Ics as % of Icu) @415VAC | 36kA |
| Ambient temperature | -5°C to 55°C |
| Suitable for isolation | Yes |
| Load-line bias | No |
| Electrical Life (Operating Cycles) | 4000 |
| IP Protection | IP40 |
| Pollution Degree | III |
| Width(mm) | 183.5 |
| Height(mm) | 266 |
| Depth(mm) | 111.5 |
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.