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    Wago Relay and Optocoupler Modules

    Explore our comprehensive range of Wago Relay and Optocoupler Modules, designed to enhance your electrical systems with reliability and precision. Whether you’re working on automation, control panels, or industrial applications, Wago modules provide seamless integration and superior performance. Trust in Wago’s advanced technology to ensure efficient signal transmission and electrical isolation. Equip your projects with the best in relay and optocoupler solutions for unmatched quality and dependability.

    Browse the range below to compare formats and features, and visit our main Wago Shop to browse our full brand range and pair with compatible products.

    Wago 788-303 Wago 788 Relay Module with 1 Changeover Contact - 12V DC 16A 2.5 mm² Grey 1

    Wago 788-303 Relay Module with 1 Changeover Contact – 12V DC 16A 2.5mm² Grey
    Delivery usually within 1 - 3 working days *
    SKU: 788-303
    £8.75
    Wago 788-304 Wago 788 Relay Module with 1 Changeover Contact - 24V DC 16A 2.5 mm² Grey 1

    Wago 788-304 Relay Module with 1 Changeover Contact – 24V DC 16A 2.5mm² Grey
    9 in stock
    More available within 1 - 3 working days *
    SKU: 788-304
    £7.35
    Wago 788-384 Wago 788 Relay Module with 2 Driven Changeover Contacts - 24V DC 6A 2.5 mm² Grey 1

    Wago 788-384 Relay Module with 2 Driven Changeover Contacts – 24V DC 6A 2.5mm² Grey
    Delivery usually within 1 - 3 working days *
    SKU: 788-384
    £23.79
    Wago 788-354 Wago 788 Relay Module with 1 Changeover Contact for Lamp Loads - 24V DC 16A 2.5 mm² Grey 1

    Wago 788-354 Relay Module with 1 Changeover Contact for Lamp Loads – 24V DC 16A 2.5mm² Grey
    11 in stock
    More available within 1 - 3 working days *
    SKU: 788-354
    £13.94
    Wago 788-311 Wago 788 Relay Module with 2 Changeover Contacts - 12V DC 8A 2.5 mm² Grey 1

    Wago 788-311 Relay Module with 2 Changeover Contacts – 12V DC 8A 2.5mm² Grey
    13 in stock
    More available within 1 - 3 working days *
    SKU: 788-311
    £9.04
    Wago 788-312 Wago 788 Relay Module with 2 Changeover Contacts - 24V DC 8A 2.5 mm² Grey 1

    Wago 788-312 Relay Module with 2 Changeover Contacts – 24V DC 8A 2.5mm² Grey
    Delivery usually within 1 - 3 working days *
    SKU: 788-312
    £7.60
    Wago 288-437 Wago 288 Relay Module with Driven Contacts - 2 Changeover Contacts - 24V DC 5A 2.5 mm²

    Wago 288-437 Relay Module with Driven Contacts – 2 Changeover Contacts – 24V DC 5A 2.5mm²
    Delivery usually within 1 - 3 working days *
    SKU: 288-437
    £64.14
    Wago 788-515 Wago 788 Relay Module with 2 Changeover Contacts - 115V AC 8A 2.5 mm² Grey 1

    Wago 788-515 Relay Module with 2 Changeover Contacts – 115V AC 8A 2.5mm² Grey
    Delivery usually within 1 - 3 working days *
    SKU: 788-515
    £10.07
    Wago 788-516 Wago 788 Relay Module with 2 Changeover Contacts - 230V AC 8A 2.5 mm² Grey 1

    Wago 788-516 Relay Module with 2 Changeover Contacts – 230V AC 8A 2.5mm² Grey
    Delivery usually within 1 - 3 working days *
    SKU: 788-516
    £11.98
    Wago 788-512 Wago 788 Relay Module with 2 Changeover Contacts - 24V AC 8A 2.5 mm² Grey 1

    Wago 788-512 Relay Module with 2 Changeover Contacts – 24V AC 8A 2.5mm² Grey
    8 in stock
    More available within 1 - 3 working days *
    SKU: 788-512
    £8.82
    Wago 288-512 Wago 288 Relay Module with 2 Changeover Contact - 24V AC/DC 6A 2.5mm² Grey 1

    Wago 288-512 Relay Module with 2 Changeover Contact – 24V AC/DC 6A 2.5mm² Grey
    Delivery usually within 1 - 3 working days *
    SKU: 288-512
    £46.93
    Wago 857-358 Wago 857 Relay Module with 1 Changeover Contact - 230V AC/DC 6A 2.5mm² Grey 1

    Wago 857-358 Relay Module with 1 Changeover Contact – 230V AC/DC 6A 2.5mm² Grey
    3 in stock
    More available within 1 - 3 working days *
    SKU: 857-358
    £18.36
    Wago 857-354 Wago 857 Relay Module with 1 Changeover Contact - 24V AC/DC 6A 2.5mm² Grey 1

    Wago 857-354 Relay Module with 1 Changeover Contact – 24V AC/DC 6A 2.5mm² Grey
    Delivery usually within 1 - 3 working days *
    SKU: 857-354
    £14.45
    Wago 857-304 Wago 857 Relay Module with 1 Changeover Contact - 24V DC 6A 2.5mm² Grey 1

    Wago 857-304 Relay Module with 1 Changeover Contact – 24V DC 6A 2.5mm² Grey
    Delivery usually within 1 - 3 working days *
    SKU: 857-304
    £12.88
    Wago 857-724 Wago 857 Solid-State Relay Module - 3A Grey - 24V DC Input - 0-24V DC Output 1

    Wago 857-724 Solid-State Relay Module – 3A Grey – 24V DC Input – 0-24V DC Output
    Delivery usually within 1 - 3 working days *
    SKU: 857-724
    £24.92
    Wago 858-304 Wago 858 Manual Operation Relay Module with 4 Changeover Contacts - 24V DC 5A 1.5mm² Grey 1

    Wago 858-304 Manual Operation Relay Module with 4 Changeover Contacts – 24V DC 5A 1.5mm² Grey
    1 in stock
    More available within 1 - 3 working days *
    SKU: 858-304
    £15.57
    Wago 859-730 Wago 859-730 Optocoupler Module - 3A Grey - 24V DC Input - 3-30V DC Output 1

    Wago 859-730 Optocoupler Module – 3A Grey – 24V DC Input – 3-30V DC Output
    Delivery usually within 1 - 3 working days *
    SKU: 859-730
    £28.47
    Wago 859-794 Wago 859 Railway Optocoupler Module - 0.1A Grey - 24V DC Input - 9-60V DC Output 1

    Wago 859-794 Railway Optocoupler Module – 0.1A Grey – 24V DC Input – 9-60V DC Output
    Delivery usually within 1 - 3 working days *
    SKU: 859-794
    £11.76
    Wago 859-390 Wago 859 Railway Relay Module with 1 Changeover Contact - 24V DC 5A 2.5mm² Grey 1

    Wago 859-390 Railway Relay Module with 1 Changeover Contact – 24V DC 5A 2.5mm² Grey
    Delivery usually within 1 - 3 working days *
    SKU: 859-390
    £13.08
    Wago 859-304 Wago 859 Relay Module with 1 Changeover Contact - 24V DC 5A 2.5mm² Grey 1

    Wago 859-304 Relay Module with 1 Changeover Contact – 24V DC 5A 2.5mm² Grey
    Delivery usually within 1 - 3 working days *
    SKU: 859-304
    £13.03

    Wago Relay & Optocoupler Modules for Reliable Control & Signal Isolation

    Our range of Wago relay and optocoupler modules is designed for clean, dependable switching and signal interfacing in control panels, building services, and industrial automation. Whether you need to drive a load from a PLC output, add galvanic isolation, or create a service-friendly interface between field wiring and control equipment, these slim DIN-rail modules help keep panel wiring organised and easy to maintain.

    Relay Interface Modules for Switching Loads from PLC Outputs

    Relay modules are commonly used to switch higher-current or different-voltage loads from low-power control signals. Typical applications include:

    • Switching contactors, solenoids and valves
    • Driving fans, pumps and heaters (via suitable switching devices)
    • Interfacing PLC outputs to field devices
    • Adding changeover/NO/NC contacts where required

    Select the correct module by matching coil/control voltage, contact type, and load rating to your circuit design.

    Optocoupler Modules for Galvanic Isolation & Signal Conditioning

    Optocoupler modules provide electrical isolation between input and output circuits, helping to protect sensitive control electronics from noise, spikes, or differing potentials. They’re often used for:

    • Isolating digital inputs/outputs
    • Reducing interference in long cable runs
    • Protecting PLC I/O and control cards
    • Interfacing different signal levels (where specified)

    Always check the product details for input/output voltage range, switching characteristics, and any required suppression components.

    Choosing the Right Wago Module for Your Panel

    When choosing relay or optocoupler modules, pay particular attention to:

    • Control/coil voltage (e.g. 24V DC, 230V AC — varies by model)
    • Contact configuration (NO/NC/changeover) and switching capacity
    • Input/output characteristics for optocouplers (logic level, current draw, response time)
    • Terminal type and compatibility with your wiring method
    • Any integrated features such as LED indication, test points, or pluggable relays (where listed)

    For like-for-like replacements, matching the exact series and part number is usually the safest route.

    Panel Build & Compliance Notes

    Relay and isolation modules should be selected in line with the panel design, applicable standards, and the requirements of the controlled load. Always verify ratings, approvals, and installation guidance in the manufacturer datasheet, and ensure adequate spacing/ventilation where heat dissipation is a consideration.

    Visit Our WAGO Shop

    Looking for more? Visit our WAGO Shop to browse the full range,  all with fast UK delivery and trade pricing.

    Fast UK Delivery on WAGO Relay Modules

    Most items show stock/lead-time status on the listings. Free UK Mainland next-day delivery is available on orders over £75 + VAT for in-stock items, with a 3pm cut-off.






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    Next Day Delivery

    Cut-Off Time and Order Information
    To ensure your order qualifies for next day delivery, please place your order by 3:00 PM. This is subject to all items being available on the shelf at the time of your order. For orders where the total value exceeds £150 + VAT (double our standard carriage-paid order value of £75 + VAT), we are happy to split the delivery into two shipments if some items are needed urgently and others are not immediately available. If you have any questions or need further assistance, feel free to reach out to us via WhatsApp for live support. We’re here to help!

    In Stock Delivery Policy

    Free Next-Day Delivery Over £75 + VAT:
    Orders above £75 + VAT qualify for free next-day delivery via DPD for in-stock items. While we strive for timely dispatch, we recommend placing orders early to avoid potential delays. Once dispatched, unexpected issues may arise despite the courier’s efforts.

    Orders Below £150 + VAT:
    To keep costs manageable, we dispatch your order once all items are ready, including products with longer lead times.

    Need items faster? You can pay for an additional delivery service to receive in-stock items sooner. Simply email us with your order details, and we’ll send you a payment link for the extra delivery cost.

    Orders Above £150 + VAT:
    For larger orders, we can split delivery at no extra cost. In-stock items will be sent immediately, with the remaining items dispatched once available.

    Backorder Delivery Policy

    Items with Lead Times (e.g., 1–3 Working Days):
    This means we need to source the product from our supplier before sending it to you. The estimated dispatch time is displayed on each product page.

    Out of Stock at Supplier:
    If an item is unavailable at the supplier, we will contact you promptly. You’ll have the option to choose an alternative product or request a full refund.

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