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Mersen Fuses & Circuit Protection in Ireland – AP Haslam

    If you're searching for Mersen products in Ireland, AP Haslam is your local, authorised distributor. Based in Dublin and serving customers across Ireland for nearly 80 years, we stock a comprehensive range of Mersen electrical protection components — ready to ship.

    Who is Mersen?

    Mersen (formerly Ferraz Shawmut) is one of the world's leading manufacturers of circuit protection products. With over 125 years of experience, Mersen designs fuses, fuse holders, surge protection and power distribution solutions trusted by electrical engineers across more than 80 countries.

    Mersen Products Available from AP Haslam Ireland

    1. Industrial Fuses

    Mersen's fuse range is one of the most widely used in Irish industrial panel building. We can offer fuses in gG, aM, aR and gTr types — covering full range protection for industrial and domestic applications.

    Our Mersen fuse range includes:

    • NH Fuse Range
    • Modular Fuse Range
    • Miniature Fuse Range
    • Neozed Fuse Range
    • DZ Fuse Range

    Suitable for low voltage distribution boards, motor control centres, switchgear and domestic installations.

    2. Fuse Holders & Disconnectors

    We supply Mersen's full range of fuse holders and disconnectors including the Modulostar CUS10 series — finger-safe to IP20 under IEC standards. Available in 1, 2, 3 or 4 poles, with or without blown fuse indicator.

    Suitable for: panel builders, OEMs, electrical contractors and maintenance teams.

    3. High-Speed Fuses — Protistor® Series

    Mersen's Protistor® high-speed fuses protect sensitive power electronics including variable frequency drives (VFDs), inverters, rectifiers and semiconductor devices. These fuses interrupt fault current faster than standard fuses — preventing costly equipment damage.

    Commonly used in: renewable energy installations, drive panels, UPS systems, industrial automation.

    4. Surge Protection Devices

    Mersen surge protective devices (SPDs) protect electrical installations from voltage spikes caused by lightning strikes and switching operations. Essential for protecting sensitive equipment in industrial and commercial buildings across Ireland.

    5. Solar & Renewable Energy Protection — HelioProtection®

    Mersen's HelioProtection® fuse range is engineered specifically for photovoltaic (PV) systems. As solar installations grow across Ireland, these fuses protect cables in PV string groups and comply with both IEC 60269-6 and UL 2579 PV standards.

    6. Power Distribution Blocks

    We stock Mersen power distribution blocks for organised and reliable power distribution in control panels and switchgear. Available in a range of configurations to suit different panel layouts and current ratings.

    Industries We Serve in Ireland

    • Manufacturing & industrial automation
    • Pharmaceutical and life sciences
    • Data centres and critical infrastructure
    • Renewable energy (solar PV, wind)
    • Construction and building services
    • Oil & gas and chemical processing
    • Marine and offshore

    Why Buy Mersen from AP Haslam in Ireland?

    • Local stock — no long international lead times, no customs charges or import fees from the UK
    • Expert technical advice from our Dublin-based team
    • 80 years of industry experience
    • Dedicated account management for regular customers
    • No currency risk — all pricing in EUR

    How to Order

    Contact AP Haslam — Your Mersen Partner in Ireland

    AP Haslam Ltd is located at 14 Sunshine Industrial Estate, Crumlin Road, Dublin 12. We have been serving the Irish electrical industry since the 1940s.

    If you're looking for Mersen products in Ireland, you've found the right supplier.

    Visit: aphaslam.ie | Email: sales@aphaslam.ie | Tel: +353 (01) 453 2522