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        Learn more by watching our SICAME MCB3/4HAE | Mains Box Three Phase video.

        Sicame | Three-Phase Mains Connection Box 3P+N | IP66 Rated

        The Sicame MCB3/4HAE is a three-phase mains connection box designed for consumer mains protection and service cable termination. It accommodates 6 to 35mm² cable and contains four HSC (House Service Connector) units providing fully sealed bi-metallic connections. The MCB3/4HAE is Queensland-approved and complies with standard electrical installation practices for domestic and commercial properties requiring three-phase supply.

        Three-phase mains connection requires reliable, weatherproof termination at the consumer end. The MCB3/4HAE addresses this by combining fully insulated construction with a metal-to-metal sealing system (bi-metallic connection between copper consumer mains and aluminium or copper service cables). The base accommodates rear entry of consumer mains, eliminating exposure of PVC sheathing to UV degradation. Licensed electricians performing three-phase service connections value the MCB3/4HAE for its build quality and proven reliability on domestic upgrades and new multi-phase installations.

        The MCB3/4HAE incorporates design features that support fast, repeatable installation. All connections use 13mm across-flats hexagon sockets for standardised bolt tightening. The plug-in HSC connector system allows simple removal and replacement of individual service connections without disturbing the box assembly. The cover design permits easy exit of bonding tail cable (HSC435/1 series), a requirement in modern installations. Heavy-duty UV-stabilised polyamide construction and IP66 rating keep the internal connection point protected from weather and salt spray in exposed environments.

        Features

        • Three-phase rated 3P+N — accommodates three-phase supply plus neutral and earth, suitable for residential and commercial installations with three-phase demand.
        • Four HSC connectors included — each MCB3/4HAE contains four House Service Connector units providing bi-metallic connection and full system redundancy.
        • Fully sealed bi-metallic connection — copper consumer mains terminal to aluminium or copper service cable, with no corrosion risk at the interface.
        • 6–35mm² cable capacity — covers standard domestic service sizes (10mm² and 16mm²) through to larger commercial three-phase supplies.
        • Rear entry mains — 40mm fine thread entry on rear accommodates standard conduit and surface cable entries, with base designed for underneath consumer mains approach.
        • IP66 weatherproof rating — rated for full water immersion and salt spray, suitable for coastal installations and exposed service connection points.
        • UV-stabilised polyamide construction — heavy-duty moulded body eliminates UV degradation of PVC consumer mains sheathing and maintains structural integrity in harsh sunlight.
        • Standardised fastening — all bolts require 13mm across-flats hexagon socket only, reducing tool requirement on site.
        • Removable cover design — flat blade screw access allows removal of cover for inspection or bonding tail routing without compromising box assembly.
        • Queensland-approved — compliant with Queensland electrical installation standards and recognised by licensed electricians as a standard component in three-phase domestic service upgrades.

        Where to use

        • Three-phase domestic service upgrades — the MCB3/4HAE is the standard termination point where a property converts from single-phase to three-phase supply, accommodating existing or new consumer mains.
        • Multi-phase commercial installations — commercial properties, workshops, and light industrial spaces requiring three-phase electricity use the MCB3/4HAE at the service connection boundary.
        • New residential builds with three-phase demand — modern new constructions with electric heating, three-phase air conditioning, or workshop/studio space install three-phase mains boxes at the consumer end.
        • Coastal and salt-spray environments — the IP66 rating and sealed bi-metallic connector system make the MCB3/4HAE suitable for properties near the ocean or in high-corrosion zones where standard copper terminals degrade rapidly.
        • Rental properties undergoing compliance upgrades — landlords upgrading electrical infrastructure for rental compliance often specify new three-phase mains boxes to meet modern standards and ensure tenant safety.
        • Building extension with increased electrical load — major renovations or extensions that increase electrical demand beyond single-phase capacity require three-phase service upgrade and new mains connection box.

        The MCB3/4HAE is not suitable for single-phase installations. It is designed exclusively for three-phase (3P+N) supply and should not be used on single-phase consumer mains (1P+N). Installation must be performed by a licensed electrician in accordance with the Electrical Safety Act and AS/NZS 3000 standards.

        Verified Sparky Direct customer reviews: Sicame MCB3/4HAE (MCB3/4HAE)

        "Just what I needed." — Sbe

        "Very strong product and well securing bolts on wiring." — Daryl

        (MCB3-4HAE)

        100-Day Fuss-Free Returns
        We want you to love what you buy—but if you change your mind, that’s okay too. That’s why Sparky Direct offers a 100-day money-back guarantee.

        • Items must be unused, with all parts, accessories, and original packaging.
        • We can’t accept returns if the product is damaged, incomplete, or not in resalable condition.
        • Proof of purchase is required.
        • Return shipping is the responsibility of the customer. 

        If your item isn’t in its original condition, please contact us before returning it—we might save you time and money.

        All products come with a manufacturer’s or supplier’s warranty

        • Warranty starts from the Invoice Date
        • Some suppliers offer in-home warranties and handle claims directly, so you won’t need to uninstall or return the product. Chat with us to check if your product qualifies.
        • Sparky Direct isn’t responsible for losses caused by product failure.
        • Warranties are void if products aren’t installed by a licensed electrician.

        Damaged or Faulty Goods
        If your order arrives damaged or is faulty, let us know within 24 hours.

        • Sparky Direct will pay for return shipping via an emailed return label.
        • If the fault is confirmed, we will send you a replacement item or provide a refund.

        Contact us via our chat to arrange the return.

        Exclusions
        We can’t accept returns for:

        • Items that have been installed, modified, or used
        • Clearance, End of life, Discontinued, or special order items (unless faulty)
        • All PPE Items
        • Goods returned without original packaging or proof of purchase

        How to Request a Return

        1. Contact our customer service team with your order number.
        2. Confirm it’s eligible under our return or warranty policy.
        3. Pack the item securely and return it using a trackable service.
        4. Once we receive and inspect it, we’ll process your refund or replacement.

        Warranty starts from Invoice Date

        Domestic Use: 1 Year
        Commercial Use: 1 Year
        Warranty Method: Return to Sparky Direct

        These specifications and characteristics outline physical, mechanical, electrical details.

        Brand Sicame
        SKU MCB3-4HAE
        Model # MCB3/4HAE
        Package Weight 1.094kg
        View Datasheet
        TYPE VALUE
        Type Consumer mains
        Brand Sicame
        Colour Black
        Height (mm) 160
        Width (mm) 150
        Depth (mm) 90
        Protection IP66
        Number of Poles 3P+N
        Cable Conductor Size (mm2) 6-35
        Rear Entry Female 40mm

        Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.

        Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.

        Tools sold by Sparky Direct must be used safely and in accordance with the manufacturer’s instructions. Customers are responsible for ensuring they have the necessary knowledge and competence to operate any tool purchased. If you are unsure how to safely or correctly use a tool, do not use it and seek guidance from the manufacturer or a suitably qualified professional.

        Nothing in this clause limits or excludes any rights or guarantees available under the Australian Consumer Law.

        For website terms and conditions https://www.sparkydirect.com.au/terms-of-use

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