Product Description
The CDB4/1R is a high-performance industrial feed-through terminal block designed for safe, reliable, and efficient electrical wiring in control panels, automation systems, and power distribution applications.
It is engineered to provide secure electrical connectivity, low contact resistance, and long service life in demanding industrial environments such as machinery control systems, PLC panels, and electrical distribution boards.
The CDB series is widely used in modern panel building due to its compact modular design, high insulation strength, and vibration-resistant structure, making it suitable for continuous industrial operations.
The “R” variant typically represents a red-coded identification version, commonly used for phase, control, or special circuit marking in panel wiring systems.
Working Principle
The CDB4/1R operates as a feed-through terminal block, allowing electrical current or signal to pass from one side to the other through an internal conductive clamp system.
When a conductor is inserted and tightened, the internal metal clamp applies uniform pressure on the wire, ensuring a stable and low-resistance electrical connection.
This prevents loosening due to vibration, thermal expansion, or mechanical stress, ensuring safe and uninterrupted electrical performance in industrial environments.
Key Features
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High-quality industrial feed-through terminal block
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Strong and stable electrical connection system
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Compact DIN rail mounting design
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Red color-coded identification (R variant)
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High vibration and shock resistance
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Flame-retardant insulating housing
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Low contact resistance for efficient conductivity
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Easy installation and wiring system
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Modular and expandable design
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Suitable for continuous industrial duty operation
Technical Specifications
General Information
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Model: CDB4/1R
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Product Type: Industrial Feed-Through Terminal Block
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Variant: R (Red color coding for identification)
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Application: Electrical connection in control panels and automation systems
Electrical Specifications
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Rated Voltage: Up to 800V AC/DC
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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 feed-through 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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Design Type: Modular stackable structure
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Color: Red (R variant identification)
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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High dielectric insulation strength
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Flame-retardant housing material
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Secure screw clamp connection system
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Short-circuit resistant design
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Finger-safe terminal construction concept
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IEC-style industrial safety compliance
Design Features
The CDB4/1R is designed with a compact modular structure, enabling high-density wiring in electrical control panels without wasting space.
Its screw clamp mechanism ensures strong mechanical grip and stable electrical contact pressure, even in environments with vibration or thermal stress.
The red color coding helps in quick circuit identification, reducing wiring errors and improving maintenance efficiency in complex control systems.
Applications
The CDB4/1R is widely used in various industrial sectors:
1. Industrial Automation
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PLC control panels
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Machine automation systems
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Robotics wiring systems
2. Electrical Distribution
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Power distribution boards
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Control cabinets
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Sub-panel wiring systems
3. Manufacturing Industry
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Production line machinery
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Motor control centers (MCC)
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Process control systems
4. Infrastructure Systems
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HVAC control systems
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Building automation systems
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Utility control systems
5. Electrical Engineering Systems
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Phase identification wiring
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Control circuit distribution
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Instrumentation systems
Advantages
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Ensures stable and reliable electrical connection
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Reduces wiring errors with color-coded identification
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High durability in industrial environments
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Easy installation and replacement
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Space-saving modular design
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Improves panel wiring organization
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Resistant to vibration and mechanical stress
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Long operational life with minimal maintenance
Installation Guidelines
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Mount on standard 35 mm DIN rail securely
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Ensure proper conductor stripping before insertion
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Tighten screws with recommended torque
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Avoid overloading beyond rated conductor size
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Maintain proper spacing in control panels
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Use end clamps for secure terminal positioning
Maintenance Guidelines
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Periodically check screw tightness
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Inspect for dust or contamination buildup
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Ensure proper ventilation inside panel
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Replace damaged units immediately
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Suitable for low-maintenance long-term operation
Engineering Summary
The CDB4/1R is a reliable industrial feed-through terminal block with color-coded identification, designed for safe and efficient electrical wiring in control panels and automation systems. Its strong construction, high insulation performance, and modular design make it ideal for modern industrial applications requiring durability, safety, and organized wiring.
