Lauritz Knudsen DN1C, MCCB, 4 Pole, 415V AC, 25kA Breaking Capacity, 125A | Thermal-Magnetic Release | IP40 Protection
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Lauritz Knudsen DN1C, MCCB, 4 Pole, 415V AC, 25kA Breaking Capacity, 125A | Thermal-Magnetic Release | IP40 Protection
- Description
- Specifications
- Documents
- Warranty
- Reviews
Description
About the Product
The Lauritz Knudsen DN1C MCCB 125A 4 Pole 415V AC 25kA Thermal Magnetic is a robust molded case circuit breaker engineered to deliver efficient protection for electrical distribution systems. Designed for reliable interruption of overload & short-circuit fault currents, it helps safeguard electrical equipment, cables, motors, & installations from damage caused by abnormal operating conditions.
Featuring a 125A rated current, 4 Pole configuration, 415V AC operating voltage, & 25kA short-circuit breaking capacity, this MCCB is ideal for protecting three-phase electrical systems where neutral protection & isolation are also required. It is widely used in industrial facilities, commercial buildings, infrastructure projects, power distribution panels, & utility installations.
The integrated thermal magnetic trip mechanism provides dual protection by offering thermal protection against overload conditions & magnetic protection against short-circuits, ensuring reliable fault management, electrical safety, & equipment protection.
How the Mechanism Works
The product functions by:
• Protecting circuits against overload conditions
• Interrupting short-circuit fault currents
• Automatically disconnecting faulty circuits
• Protecting electrical equipment & cables
• Providing simultaneous phase & neutral isolation
• Supporting safe power distribution
• Reducing the risk of electrical damage
• Delivering dependable fault-clearing performance
It serves as a reliable protection device for modern electrical distribution systems requiring comprehensive circuit protection & complete isolation capability.
Electrical Configuration
• Product Type: Molded Case Circuit Breaker (MCCB)
• Series: DN1C
• Current Rating: 125A
• Pole Configuration: 4 Pole
• Rated Voltage: 415V AC
• Frequency: 50/60 Hz
• Breaking Capacity: 25kA
• Trip Type: Thermal Magnetic
• Application: Circuit Protection
• Suitable For: Three-Phase Electrical Systems with Neutral Protection
• Catalog Number: CM90642OOLO
Construction & Design
Designed for dependable circuit protection:
• Thermal magnetic trip mechanism
• 125A rated current capacity
• 4-pole protection configuration
• 25kA short-circuit breaking capability
• Durable molded case construction
• Reliable contact system
• Compact installation design
• Long operational lifespan
Safety & Protection
• Reliable overload protection
• Fast short-circuit interruption
• Enhanced electrical safety
• Improved equipment protection
• Complete phase & neutral isolation
• Dependable fault-clearing performance
• Reduced downtime risks
• Long-term system reliability
Mounting & Durability
• Suitable for electrical distribution panels
• Compatible with commercial & industrial installations
• Rugged molded case construction
• Reliable mechanical endurance
• High manufacturing standards
• Designed for continuous duty operation
• Minimal maintenance requirements
• Suitable for demanding environments
Application Domains
• Industrial Facilities
• Manufacturing Plants
• Commercial Buildings
• Infrastructure Projects
• Utility Installations
• Data Centers
• Electrical Distribution Panels
• Power Management Systems
Key Features
• DN1C MCCB series
• 125A current rating
• 4 Pole configuration
• 415V AC operation
• 25kA breaking capacity
• Thermal magnetic protection
• Overload protection
• Short-circuit protection
• Neutral isolation capability
• Long operational life
Applications
• Three-phase power distribution
• Industrial machinery protection
• Electrical panel installations
• Motor feeder protection
• Commercial electrical systems
• Utility distribution networks
• Power management systems
• Equipment circuit protection
FAQs
1. What is the CM90642OOLO MCCB used for?
Ans: It is used for protecting electrical circuits & equipment against overloads & short circuits in three-phase electrical systems with neutral protection requirements.
2. What is the current rating of this MCCB?
Ans: The MCCB is rated at 125A.
3. What does 4 Pole mean?
Ans: A 4 Pole MCCB provides protection & switching for all three phase conductors & the neutral conductor.
4. What is the breaking capacity of this MCCB?
Ans: It has a 25kA short-circuit breaking capacity, enabling safe interruption of high fault currents.
5. What is a thermal magnetic trip mechanism?
Ans: It combines thermal overload protection & instantaneous magnetic short-circuit protection to provide comprehensive circuit protection.
6. Where can this MCCB be installed?
Ans: It can be installed in distribution boards, industrial control panels, commercial buildings, utility systems, & power distribution networks.
7. Why choose a 4 Pole MCCB?
Ans: A 4 Pole MCCB provides complete isolation of all phases & neutral, improving electrical safety, maintenance efficiency, & operational reliability.
8. Does it require frequent maintenance?
Ans: No, its durable construction & reliable protection mechanism ensure long-term, low-maintenance operation under normal operating conditions.
Overview
| Rated Operational Current | 125 |
|---|---|
| Mechanical Life (No. of operating cycles) | 25000 |
| 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 | TM |
| Rated Short Circuit Breaking capacity Icu(kA) | DN1C MCCB 125 4P 415V AC 25kA Thermal Magnetic 50/60 Hz |
| Rated Sevice circuit breaking capacity (Ics as % of Icu) @415VAC | 25kA |
| Ambient temperature | -5°C to 55°C |
| Suitable for isolation | Yes |
| Load-line bias | No |
| Electrical Life (Operating Cycles) | 10000 |
| IP Protection | IP40 |
| Pollution Degree | III |
| Width(mm) | 140 |
| Height(mm) | 165 |
| Depth(mm) | 60 |
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 DN1C MCCB 125A 4 Pole 415V AC 25kA Thermal Magnetic is a robust molded case circuit breaker engineered to deliver efficient protection for electrical distribution systems. Designed for reliable interruption of overload & short-circuit fault currents, it helps safeguard electrical equipment, cables, motors, & installations from damage caused by abnormal operating conditions.
Featuring a 125A rated current, 4 Pole configuration, 415V AC operating voltage, & 25kA short-circuit breaking capacity, this MCCB is ideal for protecting three-phase electrical systems where neutral protection & isolation are also required. It is widely used in industrial facilities, commercial buildings, infrastructure projects, power distribution panels, & utility installations.
The integrated thermal magnetic trip mechanism provides dual protection by offering thermal protection against overload conditions & magnetic protection against short-circuits, ensuring reliable fault management, electrical safety, & equipment protection.
How the Mechanism Works
The product functions by:
• Protecting circuits against overload conditions
• Interrupting short-circuit fault currents
• Automatically disconnecting faulty circuits
• Protecting electrical equipment & cables
• Providing simultaneous phase & neutral isolation
• Supporting safe power distribution
• Reducing the risk of electrical damage
• Delivering dependable fault-clearing performance
It serves as a reliable protection device for modern electrical distribution systems requiring comprehensive circuit protection & complete isolation capability.
Electrical Configuration
• Product Type: Molded Case Circuit Breaker (MCCB)
• Series: DN1C
• Current Rating: 125A
• Pole Configuration: 4 Pole
• Rated Voltage: 415V AC
• Frequency: 50/60 Hz
• Breaking Capacity: 25kA
• Trip Type: Thermal Magnetic
• Application: Circuit Protection
• Suitable For: Three-Phase Electrical Systems with Neutral Protection
• Catalog Number: CM90642OOLO
Construction & Design
Designed for dependable circuit protection:
• Thermal magnetic trip mechanism
• 125A rated current capacity
• 4-pole protection configuration
• 25kA short-circuit breaking capability
• Durable molded case construction
• Reliable contact system
• Compact installation design
• Long operational lifespan
Safety & Protection
• Reliable overload protection
• Fast short-circuit interruption
• Enhanced electrical safety
• Improved equipment protection
• Complete phase & neutral isolation
• Dependable fault-clearing performance
• Reduced downtime risks
• Long-term system reliability
Mounting & Durability
• Suitable for electrical distribution panels
• Compatible with commercial & industrial installations
• Rugged molded case construction
• Reliable mechanical endurance
• High manufacturing standards
• Designed for continuous duty operation
• Minimal maintenance requirements
• Suitable for demanding environments
Application Domains
• Industrial Facilities
• Manufacturing Plants
• Commercial Buildings
• Infrastructure Projects
• Utility Installations
• Data Centers
• Electrical Distribution Panels
• Power Management Systems
Key Features
• DN1C MCCB series
• 125A current rating
• 4 Pole configuration
• 415V AC operation
• 25kA breaking capacity
• Thermal magnetic protection
• Overload protection
• Short-circuit protection
• Neutral isolation capability
• Long operational life
Applications
• Three-phase power distribution
• Industrial machinery protection
• Electrical panel installations
• Motor feeder protection
• Commercial electrical systems
• Utility distribution networks
• Power management systems
• Equipment circuit protection
FAQs
1. What is the CM90642OOLO MCCB used for?
Ans: It is used for protecting electrical circuits & equipment against overloads & short circuits in three-phase electrical systems with neutral protection requirements.
2. What is the current rating of this MCCB?
Ans: The MCCB is rated at 125A.
3. What does 4 Pole mean?
Ans: A 4 Pole MCCB provides protection & switching for all three phase conductors & the neutral conductor.
4. What is the breaking capacity of this MCCB?
Ans: It has a 25kA short-circuit breaking capacity, enabling safe interruption of high fault currents.
5. What is a thermal magnetic trip mechanism?
Ans: It combines thermal overload protection & instantaneous magnetic short-circuit protection to provide comprehensive circuit protection.
6. Where can this MCCB be installed?
Ans: It can be installed in distribution boards, industrial control panels, commercial buildings, utility systems, & power distribution networks.
7. Why choose a 4 Pole MCCB?
Ans: A 4 Pole MCCB provides complete isolation of all phases & neutral, improving electrical safety, maintenance efficiency, & operational reliability.
8. Does it require frequent maintenance?
Ans: No, its durable construction & reliable protection mechanism ensure long-term, low-maintenance operation under normal operating conditions.
Overview
| Rated Operational Current | 125 |
|---|---|
| Mechanical Life (No. of operating cycles) | 25000 |
| 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 | TM |
| Rated Short Circuit Breaking capacity Icu(kA) | DN1C MCCB 125 4P 415V AC 25kA Thermal Magnetic 50/60 Hz |
| Rated Sevice circuit breaking capacity (Ics as % of Icu) @415VAC | 25kA |
| Ambient temperature | -5°C to 55°C |
| Suitable for isolation | Yes |
| Load-line bias | No |
| Electrical Life (Operating Cycles) | 10000 |
| IP Protection | IP40 |
| Pollution Degree | III |
| Width(mm) | 140 |
| Height(mm) | 165 |
| Depth(mm) | 60 |
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.