Wago 750-556 2Ao, ±10 Vdc

Why Choose the WAGO 750-556 Relay Output Module?

The WAGO 750-556 is a reliable 4-channel relay output module designed for integration within the WAGO I/O System 750 and 753 distributed automation platform. It allows PLCs and fieldbus controllers to switch AC or DC loads through mechanical relay contacts, creating a dependable interface between low-voltage control signals and external electrical circuits.

Each output channel provides a potential-free relay contact, allowing the module to control devices such as contactors, solenoid valves, pumps, motors, alarms and signalling devices. This flexibility makes the module suitable for machine automation, process control and building management systems where reliable switching of electrical loads is required.

The module’s compact DIN rail design allows efficient installation within control cabinets and distributed I/O stations. WAGO’s trusted CAGE CLAMP® spring pressure connection technology ensures quick wiring, vibration-resistant connections and long-term maintenance-free operation in demanding industrial environments.

Key Advantages

• 4 relay output channels for switching multiple loads.
• Potential-free relay contacts suitable for AC and DC circuits.
• Provides galvanic isolation between PLC control signals and field devices.
• Compact DIN rail module for efficient control cabinet layouts.
• CAGE CLAMP® spring pressure terminals for fast, secure wiring.
• Fully compatible with the WAGO I/O System 750 and 753.

Key Features

• 4-channel relay output module.
• Potential-free relay contacts.
• Mechanical relay switching for AC and DC loads.
• Electrical isolation between system and field circuits.
• DIN rail mounting for control cabinets.
• CAGE CLAMP® spring connection technology.
• Part of the WAGO distributed I/O system architecture.
• Designed for industrial automation and building control systems.

Technical Specifications

• Manufacturer: WAGO
• Series: WAGO I/O System 750 / 753
• Model: 750-556
• Module type: Relay output module
• Number of outputs: 4 relay outputs
• Contact type: Potential-free relay contacts
• Maximum switching voltage: approx. 250 V AC / 30 V DC
• Maximum switching current: approx. 2 A per channel
• Switching type: Mechanical relay
• System supply voltage: 5 V DC via internal system bus
• Connection technology: CAGE CLAMP® spring connection
• Mounting type: 35 mm DIN rail
• Dimensions: approx. 100 × 24 × 67.8 mm
• Operating temperature: -20 °C to +60 °C
• Protection rating: IP20
• Isolation: galvanic isolation between system and field circuits
• Approvals: CE, UL and international industrial approvals

Reliable Distributed Automation with WAGO I/O

The WAGO I/O System 750/753 is a flexible distributed automation platform widely used in machine control, factory automation and building management systems. Its modular architecture allows digital, analogue and communication modules to be combined to create scalable industrial automation solutions.

Relay output modules such as the 750-556 are particularly useful when switching higher voltage loads or when electrical isolation between PLC logic and external circuits is required. Mechanical relay contacts provide a dependable interface for controlling field devices and electrical equipment from automation systems.

Typical Applications

• Industrial automation control panels.
• PLC-controlled relay switching.
• Machine control and process automation.
• Switching AC loads and higher voltage circuits.
• Alarm and signalling systems.
• Building automation and facility management.

Trusted by Automation Engineers

WAGO relay output modules are trusted worldwide by machine builders and automation engineers for reliable switching performance, electrical isolation and flexible integration in industrial control systems.