Mersen 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P+N, 690V ac

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Mersen 400A Rail Mount Fuse Holder for NH2 Fuse, 3P, 690V ac

Mersen 25A Rail Mount Fuse Holder for 8 x 31mm Fuse, 2P, 400V ac


Fuse holders are essential devices designed to retain, protect, and mount fuses. Available in various styles, each fuse holder is tailored to accommodate a specific type of fuse and can be classified by its attachment or mounting method. RS provides an extensive selection of high-quality fuse holders suited for industrial, commercial, and domestic applications.

## **Types of Fuse Holders**

Fuse holders are designed to accommodate different types of fuses based on their application and environment. Here are some of the most common types available: 

- **Base Mount Fuse Holder:** Typically used with cartridge fuses, the base of these holders is usually attached to a surface using fixing screws centred on the base.
- **Inline Fuse Holder:** These holders provide housing for a fuse within a wiring circuit. Cables or wires are attached at each end of the holder, facilitating inline connections. They are commonly used in vehicle electrical circuits with mini blade fuses.
- **Panel Mount Fuse Holder:** Designed for direct mounting on or within an electrical panel. Panel mount fuse holders come in two main types: rectangular snap-in types and cylindrical tube screw-in types, with cap styles ranging from manual to slotted or finger grip.
- **Rail Mount Fuse Holder:** Specifically designed for attachment to [DIN rails](https://sg.rs-online.com/web/c/connectors/terminal-blocks-din-rail-terminals/), these holders feature a slot for rail attachment and vary in characteristics like voltage and current rating, number of poles, and terminal type.
- **Bottle Fuse Holder:** Used for cylindrical bottle fuses, these holders typically include a cap to complete the circuit.
- **PCB Mount Fuse Holder:** These holders are directly fitted to a printed circuit board (PCB) and come in two basic types: open and fully enclosed. Open PCB mounts may include [fuse clips](https://sg.rs-online.com/web/c/fuses-circuit-breakers/fuse-holders-accessories/fuse-clips/), [fuse blocks](https://sg.rs-online.com/web/c/fuses-circuit-breakers/fuse-holders-accessories/fuse-blocks/), sockets, and plug-on cap varieties, while the fully enclosed variety might utilise a fuse carrier inserted into a holder.
- **DC Fuse Holder:** DC fuse holders are crucial for providing a secure and accessible location for fuses within a DC electrical circuit. These holders are used alongside DC fuses to offer overcurrent protection, ensuring the circuit operates safely. They also allow for the straightforward replacement of fuses, enhancing maintenance efficiency.

## **Material Choices for Fuse Holders**

Discover the range of materials commonly used to manufacture fuse holders, each selected for its unique properties and suitability for specific applications: 

- **Thermoplastic:** Thermoplastics are favoured for their excellent electrical insulation, heat resistance, and mechanical durability. Common types such as Polycarbonate (PC), Nylon (PA), and Acrylonitrile Butadiene Styrene (ABS) offer cost-effective solutions with versatile moulding capabilities for diverse applications.
- **PBT (Polybutylene Terephthalate):** Known for its robust electrical properties and resistance to high temperatures and chemicals, PBT is ideal for demanding environments like automotive and industrial applications.
- **PET (Polyethylene Terephthalate):** PET stands out due to its good electrical insulation and clarity, which makes it suitable for applications where visibility of the fuse is necessary.
- **Glass:** Glass fuse holders are optimal for low-voltage applications where inspection visibility is crucial. They are also highly resistant to high temperatures and corrosive chemicals.
- **Polyamide:** Offering excellent mechanical strength and electrical insulation, polyamides like nylon are well-suited for environments that require durability and resistance to wear.
- **Thermoset plastic:** Thermoset plastics, including phenolic and epoxy resins, are noted for their superior heat resistance and stability in harsh conditions, making them ideal for high-temperature applications.

## **Benefits of Fuse Holders**
- **Overcurrent Protection:** Fuse holders are essential for safely containing fuses that protect circuits from excessive current. They interrupt the current flow when necessary, safeguarding connected devices from damage.
- **Enhanced Safety:** By mitigating overcurrent risks, fuse holders help prevent electrical fires and equipment damage. Many designs are touchproof, protecting users from live components.
- **Ease of Replacement:** They allow for quick and straightforward fuse replacements, minimising downtime in critical applications.
- **Versatile Installation Options:** Available in several styles like panel-mount, inline, and PCB-mount, fuse holders offer installation flexibility across various sectors.
- **Durability and Reliability:** Constructed from robust materials, these fuse holders resist environmental challenges such as temperature changes and vibrations, ensuring longevity.
- **Compact Design:** Their space-efficient design is perfect for tight spaces in control panels and machines, optimising enclosure space.
- **Fault Detection:** Fuse holders provide immediate fault indication when a fuse blows, facilitating rapid troubleshooting and maintenance for enhanced system reliability.

## **Industrial Applications of Fuse Holders**
- **Household Appliances:** Critical in appliances like washing machines and air conditioners, fuse holders are necessary for overcurrent protection to enhance safety and extend device lifespan.
- **Automotive Electronics:** In automotive applications, fuse holders protect essential systems in vehicles from engine controls to infotainment, enduring automotive environmental stresses.
- **Industrial Equipment:** Fuse holders are key in protecting industrial machinery and controls, such as conveyor systems and motors, ensuring safety and operational efficiency.
- **Telecommunications:** Vital in safeguarding electronics in routers and switches, maintaining reliable communication services.
- **Medical Equipment:** In medical technology, fuse holders ensure the safety and functionality of critical devices like ventilators and diagnostic machines.
- **Aerospace Applications:** Used in systems where reliability is critical, fuse holders meet stringent standards to protect avionics and control systems under extreme conditions.
- **Energy and Power Distribution:** Essential in power grids, protecting transformers and circuit breakers to maintain stable and safe power distribution.

## **Your Trusted Supplier of Fuse Holders**

[RS](https://sg.rs-online.com/web/) is your reliable partner for high-quality fuse holders, offering a comprehensive range from renowned brands like [Schurter](https://sg.rs-online.com/web/c/fuses-circuit-breakers/fuse-holders-accessories/fuse-holders/?applied-dimensions=4294965586), [Littelfuse](https://sg.rs-online.com/web/c/fuses-circuit-breakers/fuse-holders-accessories/fuse-holders/?applied-dimensions=4294966152), [Eaton](https://sg.rs-online.com/web/c/fuses-circuit-breakers/fuse-holders-accessories/fuse-holders/?applied-dimensions=4294966708), and [Mersen](https://sg.rs-online.com/web/c/fuses-circuit-breakers/fuse-holders-accessories/fuse-holders/?applied-dimensions=4294966048). Whether you need robust solutions for industrial applications, dependable options for commercial use, or practical devices for domestic settings, RS has the expertise and inventory to meet your needs.

Choose RS for a seamless purchasing experience. We streamline the process from selection to delivery, ensuring you receive your fuse holders swiftly and efficiently across Singapore. For detailed information about our delivery options, timelines, and charges, please visit our [Delivery Information page](https://sg.rs-online.com/web/content/support/all-articles/delivery). Trust RS to provide not just products but complete solutions that enhance your projects.



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Mersen Fuse Holders

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