Lauritz Knudsen Accessory for AU HR MCB: AUX/TAC Contact | 1 Inbuilt + 1 in auxiliary contact | 240/24V AC/DC
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Lauritz Knudsen Accessory for AU HR MCB: AUX/TAC Contact | 1 Inbuilt + 1 in auxiliary contact | 240/24V AC/DC
- Description
- Specifications
- Documents
- Warranty
- Reviews
Description
About the Product
The Lauritz Knudsen AU HR MCB Auxiliary TAC Contact 24V DC 1NO + 1NC is a modular accessory designed to enhance the functionality of high rating (HR) miniature circuit breakers. It provides tripping indication, auxiliary signaling, & control feedback for electrical systems.
This accessory includes one normally open (1NO) & one normally closed (1NC) contact, allowing it to be integrated into control panels, automation systems, & remote monitoring applications. It is widely used in industrial & commercial installations requiring precise control & reliable feedback from protective devices.
How the TAC Contact Works
The TAC (Tripping Auxiliary Contact) operates in direct coordination with the MCB:
• Mechanically linked with the HR MCB
• Changes contact status based on breaker ON/OFF or trip condition
• 1NO contact closes when the MCB is ON
• 1NC contact opens simultaneously
• Sends signals to control circuits & automation systems during tripping events
This allows accurate monitoring & control of circuit breaker operations.
Electrical Configuration
• Rated control voltage: 24V DC
• Contact configuration: 1NO + 1NC
• Type: TAC (Tripping Auxiliary Contact)
• Function: Tripping indication, signaling, & auxiliary switching
• Compatibility: AU HR MCB series
• Application: Automation, monitoring, & control systems
Construction & Design
The accessory is engineered for reliability & seamless integration:
• Compact modular design for side mounting
• Compatible with HR MCB series
• Precision contact mechanism for accurate switching
• Durable materials for long service life
• Designed for continuous monitoring applications
Safety & Functionality
• Provides real-time tripping & status indication
• Enhances control system integration
• Enables automation & remote monitoring
• Supports interlocking & signaling functions
• Improves operational visibility & system safety
Mounting & Durability
• Easy snap-on mounting with compatible HR MCBs
• Secure mechanical coupling for accurate operation
• Compact structure for space-efficient panel design
• Long mechanical & electrical lifespan
• Reliable under frequent switching & signaling conditions
Application Domains
• Industrial control panels
• Power distribution systems
• Automation & PLC systems
• Electrical monitoring systems
• Machine control & interlocking circuits
Key Features
• 24V DC auxiliary TAC contact
• 1NO + 1NC contact configuration
• Designed for AU HR MCB compatibility
• Supports tripping indication & signaling
• Compact modular side-mount design
• Reliable & durable construction
• Ideal for automation & monitoring applications
Applications
• Breaker trip indication
• Remote monitoring & alarm systems
• Automation & PLC control panels
• Interlocking & control circuits
• Electrical system status feedback
FAQs
1. What is a TAC contact used for?
Ans: It is used for tripping indication, control signaling, & integration with automation systems.
2. What does 1NO + 1NC mean?
Ans: It provides one normally open contact & one normally closed contact for flexible control applications.
3. What is the difference between auxiliary & TAC contact?
Ans: TAC contacts are specifically designed for tripping indication & control, while standard auxiliary contacts are mainly used for general status signaling.
4. What voltage does it operate on?
Ans: It operates on a 24V DC control circuit.
5. Can it be used with HR MCBs?
Ans: Yes, it is specifically designed for compatibility with AU HR MCB series.
6. How is it installed?
Ans: It is mounted on the side of a compatible MCB inside a distribution board or control panel.
7. Why is this accessory important?
Ans: It enhances monitoring, control, & automation capabilities, improving safety & operational efficiency in electrical systems.
Overview
| Discount Percentage | Between 0-10 % |
|---|---|
| Operating Temperature Range | -25°C to +60° C |
| Electrical life (Operating Cylces) | 10,000 |
| Tightening Torque | 0.5Nm |
| Termination capacity | 2.5 Sq. mm (Flexible) |
| Rated operational voltage (Ue) | 240V AC/24V DC |
| Length(mm) | 62.7 |
| Height(mm) | 85 |
| Breadth(mm) | 8.75 |
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 AU HR MCB Auxiliary TAC Contact 24V DC 1NO + 1NC is a modular accessory designed to enhance the functionality of high rating (HR) miniature circuit breakers. It provides tripping indication, auxiliary signaling, & control feedback for electrical systems.
This accessory includes one normally open (1NO) & one normally closed (1NC) contact, allowing it to be integrated into control panels, automation systems, & remote monitoring applications. It is widely used in industrial & commercial installations requiring precise control & reliable feedback from protective devices.
How the TAC Contact Works
The TAC (Tripping Auxiliary Contact) operates in direct coordination with the MCB:
• Mechanically linked with the HR MCB
• Changes contact status based on breaker ON/OFF or trip condition
• 1NO contact closes when the MCB is ON
• 1NC contact opens simultaneously
• Sends signals to control circuits & automation systems during tripping events
This allows accurate monitoring & control of circuit breaker operations.
Electrical Configuration
• Rated control voltage: 24V DC
• Contact configuration: 1NO + 1NC
• Type: TAC (Tripping Auxiliary Contact)
• Function: Tripping indication, signaling, & auxiliary switching
• Compatibility: AU HR MCB series
• Application: Automation, monitoring, & control systems
Construction & Design
The accessory is engineered for reliability & seamless integration:
• Compact modular design for side mounting
• Compatible with HR MCB series
• Precision contact mechanism for accurate switching
• Durable materials for long service life
• Designed for continuous monitoring applications
Safety & Functionality
• Provides real-time tripping & status indication
• Enhances control system integration
• Enables automation & remote monitoring
• Supports interlocking & signaling functions
• Improves operational visibility & system safety
Mounting & Durability
• Easy snap-on mounting with compatible HR MCBs
• Secure mechanical coupling for accurate operation
• Compact structure for space-efficient panel design
• Long mechanical & electrical lifespan
• Reliable under frequent switching & signaling conditions
Application Domains
• Industrial control panels
• Power distribution systems
• Automation & PLC systems
• Electrical monitoring systems
• Machine control & interlocking circuits
Key Features
• 24V DC auxiliary TAC contact
• 1NO + 1NC contact configuration
• Designed for AU HR MCB compatibility
• Supports tripping indication & signaling
• Compact modular side-mount design
• Reliable & durable construction
• Ideal for automation & monitoring applications
Applications
• Breaker trip indication
• Remote monitoring & alarm systems
• Automation & PLC control panels
• Interlocking & control circuits
• Electrical system status feedback
FAQs
1. What is a TAC contact used for?
Ans: It is used for tripping indication, control signaling, & integration with automation systems.
2. What does 1NO + 1NC mean?
Ans: It provides one normally open contact & one normally closed contact for flexible control applications.
3. What is the difference between auxiliary & TAC contact?
Ans: TAC contacts are specifically designed for tripping indication & control, while standard auxiliary contacts are mainly used for general status signaling.
4. What voltage does it operate on?
Ans: It operates on a 24V DC control circuit.
5. Can it be used with HR MCBs?
Ans: Yes, it is specifically designed for compatibility with AU HR MCB series.
6. How is it installed?
Ans: It is mounted on the side of a compatible MCB inside a distribution board or control panel.
7. Why is this accessory important?
Ans: It enhances monitoring, control, & automation capabilities, improving safety & operational efficiency in electrical systems.
Overview
| Discount Percentage | Between 0-10 % |
|---|---|
| Operating Temperature Range | -25°C to +60° C |
| Electrical life (Operating Cylces) | 10,000 |
| Tightening Torque | 0.5Nm |
| Termination capacity | 2.5 Sq. mm (Flexible) |
| Rated operational voltage (Ue) | 240V AC/24V DC |
| Length(mm) | 62.7 |
| Height(mm) | 85 |
| Breadth(mm) | 8.75 |
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.