Lauritz Knudsen EXORA, MCB, 2 Pole, 250V DC, 6kA, C Curve, 4A
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Lauritz Knudsen EXORA, MCB, 2 Pole, 250V DC, 6kA, C Curve, 4A
- Description
- Specifications
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- Warranty
- Reviews
Description
About the Product
The Exora MCB 4A DP 250V DC 6kA C Curve is a high-performance Double Pole Miniature Circuit Breaker specifically engineered for low-current direct current (DC) applications. Designed to provide dependable protection against overloads & short circuits, this MCB safeguards sensitive electrical equipment & wiring from damage caused by abnormal current conditions. With a 4A current rating, 250V DC operating voltage, 6kA breaking capacity, & C Curve tripping characteristic, it is ideally suited for solar systems, battery installations, telecom circuits, instrumentation systems, & automation applications that require complete isolation of both positive & negative conductors.
How the Mechanism Works
The Exora MCB utilizes an advanced thermal magnetic protection system for comprehensive DC circuit protection.
• Thermal protection responds to sustained overload conditions.
• Magnetic protection provides instantaneous response to short-circuit faults.
• Automatically disconnects the circuit during abnormal electrical conditions.
• Protects connected equipment & wiring from electrical damage.
• C Curve characteristic allows moderate inrush currents without nuisance tripping.
• Simultaneously disconnects both conductors for complete circuit isolation.
• Provides fast & accurate fault interruption.
Electrical Configuration
This MCB is designed for protection of low-current DC electrical systems requiring full conductor isolation.
• Rated current: 4A
• Pole configuration: Double Pole (DP)
• Rated voltage: 250V DC
• Breaking capacity: 6kA
• Tripping characteristic: C Curve
• Thermal magnetic protection mechanism
• Simultaneous disconnection of positive & negative conductors
• Suitable for direct current applications
Construction & Design
Built for dependable operation & long-term reliability in modern DC installations.
• High-quality flame-retardant insulated housing
• Compact modular design for efficient panel utilization
• Precision-engineered tripping mechanism
• Robust contact system for reliable switching performance
• Ergonomic operating lever for easy manual control
• Double pole design for complete circuit isolation
• Durable construction designed for extended service life
Safety & Protection
The MCB delivers reliable protection against common electrical faults while ensuring complete circuit isolation.
• Overload protection
• Short-circuit protection
• Fast fault interruption capability
• Complete isolation of both conductors
• Protection of sensitive electronic equipment
• Prevention of wiring damage
• Enhanced safety in DC applications
• Improved system reliability & operational safety
Mounting & Durability
Designed for convenient installation & long operational life.
• Standard DIN rail mounting compatibility
• Quick & secure installation
• Compact space-saving design
• Suitable for DC distribution boards & control panels
• Resistant to electrical & thermal stresses
• Low maintenance requirements
• Long service life with consistent protection performance
Application Domains
Suitable for a wide range of low-current DC electrical applications.
• Solar photovoltaic (PV) systems
• Battery energy storage systems
• DC distribution panels
• PLC systems & control circuits
• Telecom equipment & networks
• Instrumentation systems
• Industrial control applications
• Electronic protection circuits requiring full isolation
Key Features
• Rated current: 4A
• Double Pole (DP) configuration
• Rated voltage: 250V DC
• Breaking capacity: 6kA
• C Curve tripping characteristic
• Thermal magnetic protection mechanism
• Simultaneous disconnection of both conductors
• Fast & reliable fault response
• DIN rail mounting compatible
• Suitable for DC applications
• Compact modular construction
• Durable & reliable design
Applications
• Solar PV systems
• Battery storage & backup systems
• DC control panels
• Industrial automation systems
• Telecom installations
• PLC control systems
• Instrumentation circuits
• DC power distribution networks
FAQs
1. What is a 4A DP DC MCB used for?
Ans: A 4A DP DC MCB is used to protect low-current DC circuits from overload & short-circuit faults while ensuring complete isolation of both conductors.
2. What is a C Curve tripping characteristic?
Ans: A C Curve MCB allows moderate inrush currents before tripping, making it suitable for general-purpose DC loads & control circuits.
3. Why use a Double Pole (DP) MCB in DC systems?
Ans: A Double Pole MCB disconnects both positive & negative conductors simultaneously, providing complete circuit isolation & enhanced safety.
4. What does the 250V DC rating mean?
Ans: The 250V DC rating indicates the maximum direct current voltage at which the MCB can safely operate & interrupt fault conditions.
5. What is a 6kA breaking capacity?
Ans: A 6kA breaking capacity means the MCB can safely interrupt fault currents up to 6,000 amperes without damage.
6. Does this MCB protect against overloads & short circuits?
Ans: Yes, the thermal magnetic protection mechanism provides protection against both overload & short-circuit faults.
7. Where is this MCB commonly installed?
Ans: It is commonly installed in solar systems, battery storage installations, telecom networks, automation panels, instrumentation circuits, & DC distribution systems requiring complete isolation.
8. How is the MCB installed?
Ans: The MCB is designed for easy installation on standard DIN rails inside DC distribution boards, control panels, & electrical enclosures.
Overview
| Discount Percentage | Between 0-10 % |
|---|---|
| Operating Temperature Range | -25°C to +70°C |
| Electrical life (Operating Cylces) | 3000 |
| Tightening Torque | 4Nm |
| Termination capacity | 35 Sq. mm (Rigid) 25 Sq. mm (Flexible) |
| Mechanical Life (Operating Cycles) | 100000 |
| No. of Poles | DP |
| Conformance to standards | IEC 60947-2 |
| Rated Insulation Voltage Ui (V) | 500V |
| Rated Short-circuit Breaking Capacity | 6kA |
| Rated Impulse Voltage | 4kV |
| Current Rating | 4A |
| Rated Operational voltage (Ue) | 250V |
| Conformance to Standards | IEC 60947-2 |
| Tripping Characteristic | C Curve |
| Length(mm) | 74.5 |
| Height(mm) | 87.3 |
| Breadth(mm) | 35 |
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 Exora MCB 4A DP 250V DC 6kA C Curve is a high-performance Double Pole Miniature Circuit Breaker specifically engineered for low-current direct current (DC) applications. Designed to provide dependable protection against overloads & short circuits, this MCB safeguards sensitive electrical equipment & wiring from damage caused by abnormal current conditions. With a 4A current rating, 250V DC operating voltage, 6kA breaking capacity, & C Curve tripping characteristic, it is ideally suited for solar systems, battery installations, telecom circuits, instrumentation systems, & automation applications that require complete isolation of both positive & negative conductors.
How the Mechanism Works
The Exora MCB utilizes an advanced thermal magnetic protection system for comprehensive DC circuit protection.
• Thermal protection responds to sustained overload conditions.
• Magnetic protection provides instantaneous response to short-circuit faults.
• Automatically disconnects the circuit during abnormal electrical conditions.
• Protects connected equipment & wiring from electrical damage.
• C Curve characteristic allows moderate inrush currents without nuisance tripping.
• Simultaneously disconnects both conductors for complete circuit isolation.
• Provides fast & accurate fault interruption.
Electrical Configuration
This MCB is designed for protection of low-current DC electrical systems requiring full conductor isolation.
• Rated current: 4A
• Pole configuration: Double Pole (DP)
• Rated voltage: 250V DC
• Breaking capacity: 6kA
• Tripping characteristic: C Curve
• Thermal magnetic protection mechanism
• Simultaneous disconnection of positive & negative conductors
• Suitable for direct current applications
Construction & Design
Built for dependable operation & long-term reliability in modern DC installations.
• High-quality flame-retardant insulated housing
• Compact modular design for efficient panel utilization
• Precision-engineered tripping mechanism
• Robust contact system for reliable switching performance
• Ergonomic operating lever for easy manual control
• Double pole design for complete circuit isolation
• Durable construction designed for extended service life
Safety & Protection
The MCB delivers reliable protection against common electrical faults while ensuring complete circuit isolation.
• Overload protection
• Short-circuit protection
• Fast fault interruption capability
• Complete isolation of both conductors
• Protection of sensitive electronic equipment
• Prevention of wiring damage
• Enhanced safety in DC applications
• Improved system reliability & operational safety
Mounting & Durability
Designed for convenient installation & long operational life.
• Standard DIN rail mounting compatibility
• Quick & secure installation
• Compact space-saving design
• Suitable for DC distribution boards & control panels
• Resistant to electrical & thermal stresses
• Low maintenance requirements
• Long service life with consistent protection performance
Application Domains
Suitable for a wide range of low-current DC electrical applications.
• Solar photovoltaic (PV) systems
• Battery energy storage systems
• DC distribution panels
• PLC systems & control circuits
• Telecom equipment & networks
• Instrumentation systems
• Industrial control applications
• Electronic protection circuits requiring full isolation
Key Features
• Rated current: 4A
• Double Pole (DP) configuration
• Rated voltage: 250V DC
• Breaking capacity: 6kA
• C Curve tripping characteristic
• Thermal magnetic protection mechanism
• Simultaneous disconnection of both conductors
• Fast & reliable fault response
• DIN rail mounting compatible
• Suitable for DC applications
• Compact modular construction
• Durable & reliable design
Applications
• Solar PV systems
• Battery storage & backup systems
• DC control panels
• Industrial automation systems
• Telecom installations
• PLC control systems
• Instrumentation circuits
• DC power distribution networks
FAQs
1. What is a 4A DP DC MCB used for?
Ans: A 4A DP DC MCB is used to protect low-current DC circuits from overload & short-circuit faults while ensuring complete isolation of both conductors.
2. What is a C Curve tripping characteristic?
Ans: A C Curve MCB allows moderate inrush currents before tripping, making it suitable for general-purpose DC loads & control circuits.
3. Why use a Double Pole (DP) MCB in DC systems?
Ans: A Double Pole MCB disconnects both positive & negative conductors simultaneously, providing complete circuit isolation & enhanced safety.
4. What does the 250V DC rating mean?
Ans: The 250V DC rating indicates the maximum direct current voltage at which the MCB can safely operate & interrupt fault conditions.
5. What is a 6kA breaking capacity?
Ans: A 6kA breaking capacity means the MCB can safely interrupt fault currents up to 6,000 amperes without damage.
6. Does this MCB protect against overloads & short circuits?
Ans: Yes, the thermal magnetic protection mechanism provides protection against both overload & short-circuit faults.
7. Where is this MCB commonly installed?
Ans: It is commonly installed in solar systems, battery storage installations, telecom networks, automation panels, instrumentation circuits, & DC distribution systems requiring complete isolation.
8. How is the MCB installed?
Ans: The MCB is designed for easy installation on standard DIN rails inside DC distribution boards, control panels, & electrical enclosures.
Overview
| Discount Percentage | Between 0-10 % |
|---|---|
| Operating Temperature Range | -25°C to +70°C |
| Electrical life (Operating Cylces) | 3000 |
| Tightening Torque | 4Nm |
| Termination capacity | 35 Sq. mm (Rigid) 25 Sq. mm (Flexible) |
| Mechanical Life (Operating Cycles) | 100000 |
| No. of Poles | DP |
| Conformance to standards | IEC 60947-2 |
| Rated Insulation Voltage Ui (V) | 500V |
| Rated Short-circuit Breaking Capacity | 6kA |
| Rated Impulse Voltage | 4kV |
| Current Rating | 4A |
| Rated Operational voltage (Ue) | 250V |
| Conformance to Standards | IEC 60947-2 |
| Tripping Characteristic | C Curve |
| Length(mm) | 74.5 |
| Height(mm) | 87.3 |
| Breadth(mm) | 35 |
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.