Wago 750-402 4Di, 24 Vdc 3ms

Why Choose the WAGO 750-402 4-Channel Digital Input Module?

The WAGO 750-402 is a compact 4-channel digital input module designed for the modular WAGO I/O System 750/753. It receives 24 V DC signals from field devices such as sensors, switches and push buttons and transmits these signals to the PLC through the system bus for monitoring and automation control.

Each input channel incorporates a built-in signal filter to suppress noise and ensure stable signal detection in electrically demanding industrial environments. The module also provides electrical isolation between field wiring and system electronics, improving system reliability and protecting control equipment.

With its slim design and robust CAGE CLAMP® spring pressure connection technology, the module allows quick installation, secure wiring and efficient use of space inside control cabinets and distributed I/O assemblies.

Key Advantages

• Reliable 4-channel digital signal acquisition for industrial automation.
• Designed for 24 V DC sensor and switch signals.
• Integrated noise suppression filtering for stable signal detection.
• Electrical isolation between field wiring and system electronics.
• Compact 12 mm DIN-rail module suitable for high-density I/O systems.
• Fast installation using CAGE CLAMP® spring terminals.

Key Features

• 4 digital input channels.
• Designed for 24 V DC digital signals.
• Approx. 3 ms input filter for signal stability.
• Supports 2-, 3- and 4-wire sensor connections.
• Integrated status LEDs for each input channel.
• CAGE CLAMP® spring pressure terminals.
• DIN-rail mounting for control cabinet installation.

Technical Specifications

• Manufacturer: WAGO
• Series: WAGO I/O System 750 / 753
• Model: 750-402
• Device type: Digital input module
• Number of inputs: 4
• Rated input voltage: 24 V DC
• Signal voltage (0): −3 V to +5 V DC
• Signal voltage (1): 15 V to 30 V DC
• Input current: approx. 4.5 mA
• Input filter: approx. 3 ms
• Field supply voltage: 24 V DC (−25% to +30%)
• System supply voltage: 5 V DC via data contacts
• Isolation voltage: approx. 500 V (system/field)
• Connection technology: CAGE CLAMP®
• Module width: 12 mm
• Mounting: DIN-35 rail
• Operating temperature: approx. 0 °C to +55 °C
• Protection rating: IP20

Distributed Digital Signal Monitoring

Digital input modules are essential for monitoring field devices in industrial automation systems. The WAGO 750-402 converts signals from sensors, switches and other field equipment into process data that can be used by PLC controllers and industrial control systems.

Within the modular WAGO I/O System 750/753, this module integrates seamlessly with fieldbus couplers and controllers, enabling scalable distributed control architectures across industrial plants and machine automation systems.

Typical Applications

• Industrial machine automation.
• Monitoring sensors, push buttons and limit switches.
• Factory production and assembly lines.
• Packaging and material handling equipment.
• Distributed PLC I/O systems.

Trusted by Automation Engineers

WAGO digital input modules are widely used by control engineers to reliably monitor sensors and field devices in distributed industrial automation systems.