Product Description
The CPST1.5/3L110-240V is a high-performance industrial interface relay module designed for efficient signal isolation, switching, and control in modern automation systems. It acts as a reliable interface between low-power control devices such as PLC outputs, sensors, and controllers, and higher power field devices.
This module ensures safe electrical isolation, protecting sensitive control equipment from voltage spikes, noise, and load fluctuations. It is widely used in industrial automation panels, machine control systems, process control units, and electrical distribution cabinets.
Designed for long-term industrial use, the CPST series combines compact design, high reliability, and strong electrical performance, making it a preferred choice for system integrators and panel builders.
Working Principle
The CPST1.5/3L110-240V operates as an interface switching device. When a control voltage (110–240V AC/DC) is applied to the input side, the internal relay or electronic switching circuit activates, allowing the output side to switch ON or OFF accordingly.
This process ensures that the control circuit and load circuit remain electrically isolated, improving safety and preventing damage to sensitive electronic systems.
The module also provides fast switching response, low power consumption, and stable operation under continuous duty conditions.
Key Features
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Wide input voltage range (110–240V AC/DC compatible)
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High electrical isolation between input and output
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Compact DIN rail mounting design
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LED status indication for easy monitoring
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Reliable switching performance for industrial loads
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Flame-retardant and durable housing material
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Low power consumption and efficient operation
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Maintenance-free design for long service life
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High resistance to electrical noise and interference
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Suitable for PLC and automation systems
Technical Specifications
General Information
- Model: CPST1.5/3L110-240V
- Product Type: Industrial Interface Relay Module
- Application: Signal switching and electrical isolation in automation systems
Electrical Specifications
- Rated Input Voltage: 110–240V AC/DC
- Operating Voltage Range: 90–264V AC/DC
- Frequency: 50/60 Hz
- Power Consumption: Low power electronic interface module
- Output Type: Relay / switching contact output
- Contact Configuration: SPDT (Single Pole Double Throw / changeover type)
- Switching Voltage: Up to 250V AC / 30V DC (typical control load)
- Switching Current: 1A to 2A (signal level applications)
- Electrical Isolation: High dielectric isolation between input and output
Input / Output Features
- Input Type: Wide-range AC/DC control signal
- Input Protection: Overvoltage and noise suppression design
- Output Type: Dry contact relay output
- Output Function: Signal switching / control interface
- LED Indicator: Yes (Power / Signal status indication)
Mechanical Specifications
- Mounting Type: DIN Rail (35 mm standard)
- Housing Material: High-grade Polyamide (PA66)
- Flame Retardant Grade: UL94 V0 equivalent
- Connection Type: Screw clamp terminal system
- Design Type: Compact modular interface relay
- Color: Industrial grey / blue combination
Environmental Specifications
- Operating Temperature: -20°C to +60°C
- Storage Temperature: -40°C to +85°C
- Humidity Range: 5% to 95% (non-condensing)
- Vibration Resistance: Industrial-grade resistance
- Pollution Degree: 2
- Installation Environment: Indoor control panel use
Safety & Protection
- High dielectric strength insulation
- Electrical isolation between control and load side
- Flame-retardant housing for fire safety
- Surge and noise resistance capability
- Safe low-voltage control interface
- Long-term operational stability
Design Advantages
The CPST1.5/3L110-240V is designed with a compact and modular structure, allowing easy installation in densely packed control panels. Its DIN rail mounting system ensures quick installation and removal without complex wiring changes.
The relay module is engineered for high reliability switching, making it suitable for repetitive operations in industrial environments. The internal circuit design ensures minimal signal loss and stable performance even under fluctuating voltage conditions.
Its LED indicator system allows technicians to easily identify operational status, reducing troubleshooting time and improving maintenance efficiency.
Applications
The CPST1.5/3L110-240V is widely used in various industrial and commercial automation applications:
1. Industrial Automation
- PLC input/output signal interfacing
- Machine automation systems
- Process control systems
2. Electrical Control Panels
- Control cabinet signal switching
- Motor control interface systems
- Distribution panel automation
3. Manufacturing Industry
- Production line automation
- Equipment control systems
- Sensor-based switching applications
4. Building Automation
- HVAC control systems
- Lighting automation
- Energy management systems
5. Utility Systems
- Pump control systems
- Monitoring and protection circuits
- Remote switching applications
Performance Benefits
- Ensures safe isolation between control and power circuits
- Reduces risk of electrical damage to PLCs and controllers
- Improves system reliability and uptime
- Provides fast and accurate switching response
- Supports long-term industrial operation
- Reduces maintenance cost and downtime
- Enhances overall automation efficiency
Installation Guidelines
- Install on standard 35 mm DIN rail securely
- Ensure correct input voltage connection (110–240V AC/DC)
- Tighten terminal screws properly to avoid loose connections
- Maintain proper ventilation inside control panel
- Avoid installation near high heat sources or strong magnetic fields
- Use proper protective devices like fuses or MCBs in circuit design
Maintenance Guidelines
- Periodically check LED status indicators
- Inspect terminal connections for tightness
- Ensure dust-free and dry operating environment
- Replace module if abnormal heating or failure is observed
- Keep control panel ventilation clean and functional
- Designed for long-term maintenance-free operation
Engineering Summary
The CPST1.5/3L110-240V is a reliable industrial interface relay module designed for safe and efficient signal switching in automation systems. It provides strong electrical isolation, compact design, and stable performance, making it ideal for modern industrial control applications.
It is a preferred solution for engineers seeking durability, safety, and precision in electrical control systems.
