Lauritz Knudsen Accessory for MCCBs: Auxilary Contact + Trip Alarm Contact | 1C/O + 1C/O Right | Suitable for DU400N/DN2/DN3B/DN3
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Lauritz Knudsen Accessory for MCCBs: Auxilary Contact + Trip Alarm Contact | 1C/O + 1C/O Right | Suitable for DU400N/DN2/DN3B/DN3
- Description
- Specifications
- Documents
- Warranty
- Reviews
Description
About the Product
The Lauritz Knudsen CM99804OOOO is a Combined Auxiliary Contact & Trip Alarm Contact Module specifically designed for compatibility with DU400N, DN2, DN3B, & DN3 series Moulded Case Circuit Breakers (MCCBs). This advanced accessory integrates two essential monitoring functions into a single compact module, providing comprehensive visibility of both MCCB operating status & fault conditions. It is ideally suited for high-capacity power distribution systems where accurate monitoring, automation integration, & rapid fault detection are critical for operational safety & reliability.
The module combines one Auxiliary Contact (1C/O) & one Trip Alarm Contact (1C/O), allowing independent monitoring of breaker status & fault events. The auxiliary contact changes state according to the MCCB ON/OFF position, providing real-time operational feedback. The trip alarm contact activates only when the MCCB trips due to overload, short-circuit, or other fault conditions, enabling clear differentiation between normal switching operations & protection-related trips.
This dual-function capability significantly improves system diagnostics & operational awareness by providing two separate signals from a single accessory. Operators & automation systems can quickly determine whether the breaker has been manually switched or has disconnected due to an electrical fault, reducing troubleshooting time & improving response efficiency.
Each contact is configured as a 1 Changeover (1C/O) contact with Common (C), Normally Open (NO), & Normally Closed (NC) terminals. This flexible arrangement enables seamless integration with PLCs, SCADA systems, Building Management Systems (BMS), alarm circuits, annunciation panels, & remote monitoring platforms.
The module features a right-side mounting configuration, ensuring proper fitment with compatible MCCB series while allowing flexible panel design & wiring arrangements. Its compact construction simplifies installation & minimizes space requirements within switchgear & control panels.
Designed for demanding industrial, infrastructure, & utility applications, the accessory operates independently of the MCCB protection mechanism & does not affect breaker performance. It provides reliable long-term operation & accurate signaling while maintaining the full protective functionality of the MCCB.
This combined auxiliary & trip alarm contact module is the ideal solution for installations requiring comprehensive breaker status monitoring, fault indication, centralized supervision, & advanced automation integration.
How the Mechanism Works
The accessory functions by:
• Monitoring the MCCB ON/OFF operating position
• Providing auxiliary contact feedback during normal switching operations
• Monitoring the MCCB trip mechanism continuously
• Detecting overload & short-circuit fault trips
• Activating trip alarm signaling during fault conditions
• Allowing clear distinction between normal operation & fault events
• Providing independent status & fault indication outputs
• Supporting remote monitoring & automation systems
• Improving electrical system diagnostics & troubleshooting
• Enhancing operational safety & response capability
It serves as a dual-function monitoring accessory that provides both MCCB status indication & dedicated fault signaling.
Electrical Configuration
• Product Type: Combined Auxiliary & Trip Alarm Contact Module
• Model: CM99804OOOO
• Auxiliary Contact Configuration: 1 Changeover (1C/O)
• Trip Alarm Contact Configuration: 1 Changeover (1C/O)
• Contact Arrangement: Common (C), Normally Open (NO), Normally Closed (NC)
• Mounting Position: Right Side
• Compatible MCCB Series:
• DU400N Series
• DN2 Series
• DN3B Series
• DN3 Series
• Function: Status Indication & Fault Monitoring
• Application: Monitoring, Signaling, & Automation Integration
• System Integration: PLC, BMS, SCADA, Alarm Systems
• Primary Purpose: Combined Operational & Fault Feedback
Construction & Design
Designed for reliability & seamless integration:
• Compact dual-function module design
• Right-side mounting configuration
• Integrated auxiliary & trip alarm contacts
• Precision-engineered contact mechanism
• Durable switching components
• Reliable electrical signaling performance
• Secure MCCB integration design
• Heavy-duty application compatibility
• Long operational service life
• Low maintenance requirements
Safety & Protection
• Real-time MCCB ON/OFF indication
• Immediate fault trip indication
• Clear distinction between switching & fault events
• Improved operational visibility
• Enhanced fault diagnostics
• Faster maintenance response
• Reliable alarm activation capability
• Improved electrical safety management
• Supports centralized monitoring systems
• Reduces downtime & troubleshooting efforts
Mounting & Durability
• Easy installation on compatible MCCBs
• Right-side mounting flexibility
• Supports PLC integration
• Compatible with Building Management Systems (BMS)
• Suitable for SCADA & monitoring systems
• Supports alarm & annunciation systems
• Saves panel space by combining two functions
• Reduces wiring complexity
• Suitable for retrofit & new installations
• Reliable long-term performance
Application Domains
• Industrial Power Distribution Systems
• High-Capacity Switchgear Panels
• Infrastructure & Utility Installations
• Building Management Systems (BMS)
• PLC & Automation Systems
• Alarm & Annunciation Systems
• Fault Monitoring & Safety-Critical Installations
• SCADA Monitoring Platforms
• Critical Power Distribution Networks
• Electrical Protection & Control Systems
Key Features
• Combined Auxiliary + Trip Alarm Contact module
• Configuration: 1C/O (Auxiliary) + 1C/O (Trip Alarm)
• Provides ON/OFF status indication
• Provides fault/trip indication
• Right-side mounting configuration
• Compatible with DU400N series
• Compatible with DN2 series
• Compatible with DN3B series
• Compatible with DN3 series
• Dual independent outputs with NO/NC flexibility
• Enables integration with PLC, BMS, & alarm systems
• Distinguishes between normal operation & fault conditions
• Ideal for high-capacity MCCB applications
• Compact, reliable, & easy-to-install design
Applications
• Industrial power distribution systems
• High-capacity switchgear panels
• Infrastructure & utility installations
• Building Management Systems (BMS)
• PLC & automation systems
• Alarm & annunciation systems
• Fault monitoring & safety-critical installations
• SCADA monitoring systems
• Electrical protection applications
• Critical power distribution installations
FAQs
1. What is the purpose of this combined module?
Ans: It provides both MCCB ON/OFF status indication & fault trip indication in a single compact accessory module.
2. What does 1C/O + 1C/O mean?
Ans: It means the module contains two separate changeover contacts: one auxiliary contact for operational status indication & one trip alarm contact for fault indication.
3. How is this better than separate modules?
Ans: It combines both monitoring functions into one unit, reducing panel space requirements, simplifying installation, & minimizing wiring complexity.
4. What does “Right” indicate?
Ans: It refers to the right-side mounting position of the module on the MCCB.
5. Which MCCBs is this compatible with?
Ans: It is compatible with DU400N, DN2, DN3B, & DN3 series MCCBs.
6. Does it affect MCCB protection?
Ans: No, it only provides signaling & monitoring functions & does not interfere with the MCCB's protection, tripping, or operating characteristics.
7. Can it be integrated with PLCs & BMS systems?
Ans: Yes, it is fully compatible with PLCs, SCADA systems, Building Management Systems (BMS), alarm circuits, & remote monitoring platforms.
8. Why is combined status & fault monitoring important?
Ans: Combined monitoring helps operators quickly determine whether a breaker has been intentionally switched OFF or has tripped because of a fault, improving diagnostics, reducing downtime, & enhancing operational safety.
Overview
| Other Specification 1 | Auxiliary+Trip Alarm Contact |
|---|---|
| Other Specification 2 | (1C/O+1C/O Right) |
| Discount Percentage | Between 0-10 % |
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 CM99804OOOO is a Combined Auxiliary Contact & Trip Alarm Contact Module specifically designed for compatibility with DU400N, DN2, DN3B, & DN3 series Moulded Case Circuit Breakers (MCCBs). This advanced accessory integrates two essential monitoring functions into a single compact module, providing comprehensive visibility of both MCCB operating status & fault conditions. It is ideally suited for high-capacity power distribution systems where accurate monitoring, automation integration, & rapid fault detection are critical for operational safety & reliability.
The module combines one Auxiliary Contact (1C/O) & one Trip Alarm Contact (1C/O), allowing independent monitoring of breaker status & fault events. The auxiliary contact changes state according to the MCCB ON/OFF position, providing real-time operational feedback. The trip alarm contact activates only when the MCCB trips due to overload, short-circuit, or other fault conditions, enabling clear differentiation between normal switching operations & protection-related trips.
This dual-function capability significantly improves system diagnostics & operational awareness by providing two separate signals from a single accessory. Operators & automation systems can quickly determine whether the breaker has been manually switched or has disconnected due to an electrical fault, reducing troubleshooting time & improving response efficiency.
Each contact is configured as a 1 Changeover (1C/O) contact with Common (C), Normally Open (NO), & Normally Closed (NC) terminals. This flexible arrangement enables seamless integration with PLCs, SCADA systems, Building Management Systems (BMS), alarm circuits, annunciation panels, & remote monitoring platforms.
The module features a right-side mounting configuration, ensuring proper fitment with compatible MCCB series while allowing flexible panel design & wiring arrangements. Its compact construction simplifies installation & minimizes space requirements within switchgear & control panels.
Designed for demanding industrial, infrastructure, & utility applications, the accessory operates independently of the MCCB protection mechanism & does not affect breaker performance. It provides reliable long-term operation & accurate signaling while maintaining the full protective functionality of the MCCB.
This combined auxiliary & trip alarm contact module is the ideal solution for installations requiring comprehensive breaker status monitoring, fault indication, centralized supervision, & advanced automation integration.
How the Mechanism Works
The accessory functions by:
• Monitoring the MCCB ON/OFF operating position
• Providing auxiliary contact feedback during normal switching operations
• Monitoring the MCCB trip mechanism continuously
• Detecting overload & short-circuit fault trips
• Activating trip alarm signaling during fault conditions
• Allowing clear distinction between normal operation & fault events
• Providing independent status & fault indication outputs
• Supporting remote monitoring & automation systems
• Improving electrical system diagnostics & troubleshooting
• Enhancing operational safety & response capability
It serves as a dual-function monitoring accessory that provides both MCCB status indication & dedicated fault signaling.
Electrical Configuration
• Product Type: Combined Auxiliary & Trip Alarm Contact Module
• Model: CM99804OOOO
• Auxiliary Contact Configuration: 1 Changeover (1C/O)
• Trip Alarm Contact Configuration: 1 Changeover (1C/O)
• Contact Arrangement: Common (C), Normally Open (NO), Normally Closed (NC)
• Mounting Position: Right Side
• Compatible MCCB Series:
• DU400N Series
• DN2 Series
• DN3B Series
• DN3 Series
• Function: Status Indication & Fault Monitoring
• Application: Monitoring, Signaling, & Automation Integration
• System Integration: PLC, BMS, SCADA, Alarm Systems
• Primary Purpose: Combined Operational & Fault Feedback
Construction & Design
Designed for reliability & seamless integration:
• Compact dual-function module design
• Right-side mounting configuration
• Integrated auxiliary & trip alarm contacts
• Precision-engineered contact mechanism
• Durable switching components
• Reliable electrical signaling performance
• Secure MCCB integration design
• Heavy-duty application compatibility
• Long operational service life
• Low maintenance requirements
Safety & Protection
• Real-time MCCB ON/OFF indication
• Immediate fault trip indication
• Clear distinction between switching & fault events
• Improved operational visibility
• Enhanced fault diagnostics
• Faster maintenance response
• Reliable alarm activation capability
• Improved electrical safety management
• Supports centralized monitoring systems
• Reduces downtime & troubleshooting efforts
Mounting & Durability
• Easy installation on compatible MCCBs
• Right-side mounting flexibility
• Supports PLC integration
• Compatible with Building Management Systems (BMS)
• Suitable for SCADA & monitoring systems
• Supports alarm & annunciation systems
• Saves panel space by combining two functions
• Reduces wiring complexity
• Suitable for retrofit & new installations
• Reliable long-term performance
Application Domains
• Industrial Power Distribution Systems
• High-Capacity Switchgear Panels
• Infrastructure & Utility Installations
• Building Management Systems (BMS)
• PLC & Automation Systems
• Alarm & Annunciation Systems
• Fault Monitoring & Safety-Critical Installations
• SCADA Monitoring Platforms
• Critical Power Distribution Networks
• Electrical Protection & Control Systems
Key Features
• Combined Auxiliary + Trip Alarm Contact module
• Configuration: 1C/O (Auxiliary) + 1C/O (Trip Alarm)
• Provides ON/OFF status indication
• Provides fault/trip indication
• Right-side mounting configuration
• Compatible with DU400N series
• Compatible with DN2 series
• Compatible with DN3B series
• Compatible with DN3 series
• Dual independent outputs with NO/NC flexibility
• Enables integration with PLC, BMS, & alarm systems
• Distinguishes between normal operation & fault conditions
• Ideal for high-capacity MCCB applications
• Compact, reliable, & easy-to-install design
Applications
• Industrial power distribution systems
• High-capacity switchgear panels
• Infrastructure & utility installations
• Building Management Systems (BMS)
• PLC & automation systems
• Alarm & annunciation systems
• Fault monitoring & safety-critical installations
• SCADA monitoring systems
• Electrical protection applications
• Critical power distribution installations
FAQs
1. What is the purpose of this combined module?
Ans: It provides both MCCB ON/OFF status indication & fault trip indication in a single compact accessory module.
2. What does 1C/O + 1C/O mean?
Ans: It means the module contains two separate changeover contacts: one auxiliary contact for operational status indication & one trip alarm contact for fault indication.
3. How is this better than separate modules?
Ans: It combines both monitoring functions into one unit, reducing panel space requirements, simplifying installation, & minimizing wiring complexity.
4. What does “Right” indicate?
Ans: It refers to the right-side mounting position of the module on the MCCB.
5. Which MCCBs is this compatible with?
Ans: It is compatible with DU400N, DN2, DN3B, & DN3 series MCCBs.
6. Does it affect MCCB protection?
Ans: No, it only provides signaling & monitoring functions & does not interfere with the MCCB's protection, tripping, or operating characteristics.
7. Can it be integrated with PLCs & BMS systems?
Ans: Yes, it is fully compatible with PLCs, SCADA systems, Building Management Systems (BMS), alarm circuits, & remote monitoring platforms.
8. Why is combined status & fault monitoring important?
Ans: Combined monitoring helps operators quickly determine whether a breaker has been intentionally switched OFF or has tripped because of a fault, improving diagnostics, reducing downtime, & enhancing operational safety.
Overview
| Other Specification 1 | Auxiliary+Trip Alarm Contact |
|---|---|
| Other Specification 2 | (1C/O+1C/O Right) |
| Discount Percentage | Between 0-10 % |
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.