We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
857-304 Wago Relay module;Nominal input voltage: 24 VDC;1 changeover contact;gray
MPN: 857-304
Alt. SKU: 857304
Special Price
£13.40
£11.17
Regular Price
£15.77
Why Choose the WAGO 857-304 Signal Conditioner?
The WAGO 857-304 is a compact signal conditioner and isolation amplifier designed to ensure reliable signal transmission in industrial automation systems. It converts and isolates analogue signals between field devices and control systems, helping maintain stable measurement and control performance.
Engineered for DIN rail installation, the module provides electrical isolation between input, output and supply circuits. This protects sensitive control equipment from interference, ground loops and voltage fluctuations that may occur in industrial environments.
The 857-304 is widely used to interface analogue signals such as 0–10 V or 4–20 mA between sensors, transmitters and PLC or DCS control systems. Its slim housing allows efficient use of space inside industrial control cabinets.
Key Advantages
- Reliable analogue signal isolation and conditioning.
- Protects control systems from electrical interference.
- Supports common industrial signal standards such as 4–20 mA and 0–10 V.
- Compact design suitable for high-density DIN rail installations.
- Improves signal stability and measurement accuracy.
- Designed for continuous industrial operation.
Key Features
- Analogue signal conditioner / isolation amplifier.
- DIN rail mounting for control cabinet installations.
- Electrical isolation between input, output and power supply.
- Supports common industrial analogue signal ranges.
- Compact industrial housing.
- Designed for automation and process control systems.
Technical Specifications
- Manufacturer: WAGO
- Series: Signal Conditioner
- Model: 857-304
- Product type: Analogue signal conditioner
- Input signals: 0–10 V, 4–20 mA (typical industrial signals)
- Output signals: 0–10 V or 4–20 mA
- Isolation: Galvanic isolation between circuits
- Mounting type: DIN rail (TS35)
- Power supply: 24 V DC typical
- Housing: Slim DIN rail module
- Application: Industrial signal isolation and conversion
Reliable Signal Conditioning for Industrial Automation
Signal conditioners are essential components in industrial measurement and control systems. They isolate, convert and stabilise analogue signals to ensure accurate communication between sensors, transmitters and control equipment.
By providing electrical isolation and signal conversion, devices such as the WAGO 857-304 help protect PLC inputs, reduce noise interference and maintain reliable operation across automation systems.
Typical Applications
- PLC and DCS signal interfacing.
- Industrial measurement and instrumentation systems.
- Sensor and transmitter signal conditioning.
- Process control and monitoring systems.
- Industrial automation control cabinets.
Frequently Asked Questions
What is the WAGO 857-304 used for?
It is a signal conditioner used to isolate and convert analogue signals between field devices and control systems.
What signals can the device handle?
The module typically supports common industrial analogue signals such as 0–10 V and 4–20 mA.
Why is signal isolation important?
Isolation protects control equipment from electrical interference, ground loops and voltage fluctuations.
How is the module installed?
The device is designed for mounting on a standard 35 mm DIN rail inside industrial control cabinets.
Where is this device typically used?
It is commonly used in industrial automation, process control and instrumentation systems.
Trusted by Automation Engineers
WAGO signal conditioning modules are trusted by engineers worldwide to provide stable and reliable analogue signal transmission within industrial automation systems.
| Manufacturer Part Number | 857-304 |
|---|---|
| Height | 170mm |
| Width | 105mm |
| Depth | 95mm |
| Manufacturer | Wago |
| Packed Quantity | 1 |
| HS Code | 85364900 |
| Barcode | 4050821797807 |
| Colour | Grey |
| Country of Manufacture | China |
| Alternative Product SKU | 857304 |
Write Your Own Review
