Lauritz Knudsen Thermal Overload Relay, MN 2, 415V AC | Relay Range 2-3.3A | Class 10A | 1 Start & OFF / Reset| Built-in Single Phasing protection
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Lauritz Knudsen Thermal Overload Relay, MN 2, 415V AC | Relay Range 2-3.3A | Class 10A | 1 Start & OFF / Reset| Built-in Single Phasing protection
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Description
About the Product
Lauritz Knudsen compatible MN 2 Thermal Overload Relay 2.3–3A 415V AC Class 10A is a compact motor protection device designed to safeguard low to medium power motors from overload conditions. It is widely used in control systems & motor starter applications for consistent & reliable performance.
How the Mechanism Works
The relay operates using a thermal sensing mechanism that continuously monitors current flowing through the motor circuit. When the current exceeds the adjustable range (2.3–3A) for a specified duration, the internal thermal element heats up & trips, disconnecting the circuit to prevent overheating & motor damage.
Electrical Configuration
Rated for an adjustable current range of 2.3–3A & 415V AC supply, this relay features Class 10A tripping characteristics, ensuring faster & precise response under overload conditions. It is typically integrated with contactors in motor control panels.
• Safety / protection aspects
• The relay provides dependable protection against sustained overload conditions, helping prevent motor winding damage, overheating, & system failures. It ensures safe operation & improves the reliability of motor-driven systems.
Construction & Design
A compact control module combines sensing or coil elements, switching contacts, adjustment or indication features, & accessible terminals.
Safety & Protection
Use within the stated ratings & coordinate the control circuit with suitable isolation & overcurrent protection before installation or service.
Mounting & Durability
Designed for compact integration with compatible contactors, the relay supports panel mounting in industrial & control environments. Its robust construction ensures durability & consistent performance under operational conditions.
Application Domains
Suitable for low to medium power motor applications such as automation systems, control panels, small machinery, pumps, & auxiliary equipment.
Key Features
• Adjustable current range: 2.3–3A
• Rated for 415V AC operation
• Class 10A tripping characteristic for precise & fast protection
• Thermal overload sensing mechanism
• Compatible with motor starters & contactors
• Compact & durable industrial design
Applications
• Motor starter panels
• Automation & control systems
• Small machinery & equipment
• Pumps & auxiliary systems
• Industrial control panels
FAQs
1. What is a thermal overload relay used for?
Ans: It is used to protect motors by disconnecting the circuit when excessive current is detected.
2. What does Class 10A mean?
Ans: Class 10A provides faster tripping response compared to Class 10, ensuring improved protection for sensitive & medium-load applications.
3. What is the current range of this relay?
Ans: It operates within an adjustable range of 2.3–3A.
4. Is this compatible with contactors?
Ans: Yes, it is designed for use with compatible contactors in motor starter systems.
5. What voltage does it support?
Ans: It is rated for 415V AC systems.
6. Where can it be used?
Ans: It is suitable for low to medium-power motor protection in industrial, automation, & control applications.
Overview
| Ambient temperature | -5 to 55 Degree C |
|---|---|
| Mounting | Direct/Separate |
| Rated operational current at 415V | 2A |
| Rated Insulation Voltage Ui (V) | 690V |
| Built-in contacts | 2NO + 1NC |
| Start/Off/Reset | 1 Start & 1 OFF/Reset |
| Trip Class | 10A |
| Rated impulse withstand voltage (Uimp) | 6kV |
| Conformance to Standards | IS/IEC 60947-4-1, IEC 60947-4-1 |
| Mechanical Life (No. of operating cycles) | 30 Operations/Hr |
| Discount Percentage | Between 0-10 % |
Reviews
Description
About the Product
Lauritz Knudsen compatible MN 2 Thermal Overload Relay 2.3–3A 415V AC Class 10A is a compact motor protection device designed to safeguard low to medium power motors from overload conditions. It is widely used in control systems & motor starter applications for consistent & reliable performance.
How the Mechanism Works
The relay operates using a thermal sensing mechanism that continuously monitors current flowing through the motor circuit. When the current exceeds the adjustable range (2.3–3A) for a specified duration, the internal thermal element heats up & trips, disconnecting the circuit to prevent overheating & motor damage.
Electrical Configuration
Rated for an adjustable current range of 2.3–3A & 415V AC supply, this relay features Class 10A tripping characteristics, ensuring faster & precise response under overload conditions. It is typically integrated with contactors in motor control panels.
• Safety / protection aspects
• The relay provides dependable protection against sustained overload conditions, helping prevent motor winding damage, overheating, & system failures. It ensures safe operation & improves the reliability of motor-driven systems.
Construction & Design
A compact control module combines sensing or coil elements, switching contacts, adjustment or indication features, & accessible terminals.
Safety & Protection
Use within the stated ratings & coordinate the control circuit with suitable isolation & overcurrent protection before installation or service.
Mounting & Durability
Designed for compact integration with compatible contactors, the relay supports panel mounting in industrial & control environments. Its robust construction ensures durability & consistent performance under operational conditions.
Application Domains
Suitable for low to medium power motor applications such as automation systems, control panels, small machinery, pumps, & auxiliary equipment.
Key Features
• Adjustable current range: 2.3–3A
• Rated for 415V AC operation
• Class 10A tripping characteristic for precise & fast protection
• Thermal overload sensing mechanism
• Compatible with motor starters & contactors
• Compact & durable industrial design
Applications
• Motor starter panels
• Automation & control systems
• Small machinery & equipment
• Pumps & auxiliary systems
• Industrial control panels
FAQs
1. What is a thermal overload relay used for?
Ans: It is used to protect motors by disconnecting the circuit when excessive current is detected.
2. What does Class 10A mean?
Ans: Class 10A provides faster tripping response compared to Class 10, ensuring improved protection for sensitive & medium-load applications.
3. What is the current range of this relay?
Ans: It operates within an adjustable range of 2.3–3A.
4. Is this compatible with contactors?
Ans: Yes, it is designed for use with compatible contactors in motor starter systems.
5. What voltage does it support?
Ans: It is rated for 415V AC systems.
6. Where can it be used?
Ans: It is suitable for low to medium-power motor protection in industrial, automation, & control applications.
Overview
| Ambient temperature | -5 to 55 Degree C |
|---|---|
| Mounting | Direct/Separate |
| Rated operational current at 415V | 2A |
| Rated Insulation Voltage Ui (V) | 690V |
| Built-in contacts | 2NO + 1NC |
| Start/Off/Reset | 1 Start & 1 OFF/Reset |
| Trip Class | 10A |
| Rated impulse withstand voltage (Uimp) | 6kV |
| Conformance to Standards | IS/IEC 60947-4-1, IEC 60947-4-1 |
| Mechanical Life (No. of operating cycles) | 30 Operations/Hr |
| Discount Percentage | Between 0-10 % |