Product Description
The CM4SGN is a high-quality industrial feed-through terminal block designed for grounding (earth) applications in electrical control panels, automation systems, and power distribution networks.
It is engineered to provide a safe and reliable earth (PE) connection, ensuring proper grounding of electrical systems to prevent electrical shock, equipment damage, and system instability.
This terminal block is widely used in industrial control panels, PLC systems, machine wiring, and electrical cabinets, where safety grounding is a critical requirement.
The CM4SGN is designed with a robust construction and green-yellow identification, making it easily distinguishable as an earth/ground terminal block in wiring systems.
Working Principle
The CM4SGN operates as a protective earth (PE) terminal block, providing a secure connection between the grounding conductor and the control panel grounding system.
When the conductor is inserted and tightened, the internal conductive structure ensures low-resistance contact with the DIN rail or grounding path, allowing fault currents to safely dissipate into the earth system.
This protects both operators and equipment by ensuring that any leakage or fault current is safely directed away from the system.
Key Features
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Dedicated industrial earth (ground) terminal block
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Strong and stable grounding connection system
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Compact DIN rail mounting design
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Green-yellow color-coded identification
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High vibration and shock resistance
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Flame-retardant insulating housing
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Low resistance grounding performance
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Easy installation and wiring system
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Modular and stackable design
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Suitable for continuous industrial safety applications
Technical Specifications
General Information
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Model: CM4SGN
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Product Type: Industrial Ground / Earth Terminal Block
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Application: Protective grounding in control panels and automation systems
Electrical Specifications
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Rated Voltage: Up to 800V (system dependent, grounding application use)
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Rated Current: 32A (depending on conductor size and installation conditions)
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Impulse Withstand Voltage: 8kV
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Overvoltage Category: III
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Pollution Degree: 3
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Frequency: 50/60 Hz
Conductor Specifications
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Solid Conductor Range: 0.5 mm² to 6 mm²
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Stranded Conductor Range: 0.5 mm² to 4 mm²
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Flexible Conductor: Supported with ferrule
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Connection Type: Screw clamp earth connection system
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Wire Entry Type: Front entry wiring
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Stripping Length: 8–10 mm
Mechanical Specifications
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Mounting Type: DIN Rail 35 mm (NS 35 standard)
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Housing Material: Polyamide PA66 (Flame Retardant grade)
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Flammability Rating: UL94 V0 equivalent
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Contact Material: High-conductivity copper alloy
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Grounding Design: Direct rail grounding contact system
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Color: Green/Yellow (Earth identification standard)
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Design Type: Modular stackable structure
Environmental Specifications
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Operating Temperature: -40°C to +85°C
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Continuous Operating Temperature: Up to +70°C
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Storage Temperature: -40°C to +90°C
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Humidity Resistance: Suitable for industrial environments
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Vibration Resistance: High resistance for machinery applications
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Corrosion Resistance: Standard industrial protection level
Safety Features
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Dedicated protective earth (PE) design
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Low resistance grounding path
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High dielectric insulation between phases
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Flame-retardant housing material
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Secure screw clamp connection system
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IEC-style industrial grounding compliance
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Safe fault current dissipation capability
Design Features
The CM4SGN is designed with a robust grounding structure, ensuring reliable earth continuity in electrical systems.
Its green-yellow color coding provides clear identification for safety wiring, reducing installation errors.
The terminal ensures a low-resistance connection to the DIN rail grounding system, improving fault protection efficiency.
Its modular design allows multiple grounding terminals to be installed in compact control panels without space issues.
Applications
The CM4SGN is widely used in industrial and electrical systems:
1. Industrial Automation
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PLC control panels
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Machine automation systems
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Robotics electrical systems
2. Electrical Distribution
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Control cabinet grounding
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Power distribution panels
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Sub-panel earth connections
3. Manufacturing Industry
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Motor control centers (MCC)
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Production line equipment
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Industrial machinery wiring
4. Infrastructure Systems
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HVAC control panels
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Building automation systems
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Utility electrical systems
5. Safety & Protection Systems
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Equipment grounding systems
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Fault current protection circuits
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Electrical safety installations
Advantages
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Ensures safe and reliable grounding connection
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Reduces risk of electrical shock and equipment damage
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High durability in industrial environments
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Easy installation and maintenance
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Space-saving modular design
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Improves electrical safety compliance
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Strong resistance to vibration and heat
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Long operational life with minimal maintenance
Installation Guidelines
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Mount on standard 35 mm DIN rail
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Ensure proper grounding connection to rail system
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Tighten screws securely to recommended torque
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Maintain proper panel grounding continuity
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Avoid loose or damaged conductors
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Use proper end clamps for stability
Maintenance Guidelines
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Periodic inspection of grounding connections
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Ensure tightness of screw terminals
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Keep panel clean and moisture-free
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Replace damaged terminals immediately
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Check continuity of earth system regularly
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Designed for long-term maintenance-free operation
Engineering Summary
The CM4SGN is a high-reliability industrial grounding terminal block designed to provide safe, low-resistance earth connections in electrical control systems. Its strong mechanical structure, flame-retardant housing, and DIN rail compatibility make it essential for modern industrial safety and electrical protection systems.
