240 Volt Fuse-holders for Miniature Fuse-Links and Slydlok Cartridge & Rewireable Fuse-Links – Type SLY

240V Miniature Fuse Holder for Miniature Fuse-Links, Slydlok Cartridge & Rewireable Fuse-Links – Type SLY Miniature Fuse Holder | Slydlok Fuse Holder | PCB Fuse Holder | Circuit Board Fuse Holder

Product Introduction

The Lawson Type SLY is a versatile and well-established range of Miniature Fuse Holders designed for use with miniature fuse-links, Slydlok cartridge fuse-links, and rewireable fuse-links in a wide variety of electrical and electronic protection applications. Rated at 240V a.c. and available in current ratings of 5A, 15A, 30A, and 60A, the Type SLY is the trusted Slydlok Fuse Holder solution for engineers and installers working across industrial controls, electronics manufacturing, instrumentation, and panel building.

Designed as both a PCB Fuse Holder and a Circuit Board Fuse Holder for electronics applications, as well as a panel-mounted miniature fuse holder for electrical distribution, the Type SLY range features multiple wiring configurations to suit virtually any installation layout. The unique Slydlok antivibration design ensures the fuse-link remains securely in contact even in high-vibration environments — making it an ideal Miniature Fuse Holder for automotive, marine, industrial, and railway applications.

For fuse holders incorporating fusewire (rewireable versions), substitute prefix ‘X’ for ‘W’ in the reference — for example, X 5341 becomes W 5341 FW.

Key Features

• Miniature Fuse Holder — for IEC 60127 miniature fuse-links, cartridge fuses, and rewireable fuse-links
• Slydlok Fuse Holder — antivibration design keeps the fuse-link securely engaged in demanding environments
• PCB Fuse Holder and Circuit Board Fuse Holder — suitable for PCB-mount and chassis-mount applications
• Rated 240V a.c. — suitable for single-phase UK and European electrical installations and equipment
• Current ratings: 5A, 15A, 30A, and 60A — covering a broad range of miniature fuse protection requirements
• Six wiring configurations available — FW (Fusewire), BC (Back Connected), MM (Midmount), BW (Busbar Wire), BCT (Back Connected Top), BCB (Back Connected Bottom)
• Rewireable versions available — for applications where fusewire is preferred over cartridge fuse-links
• Fusewire ratings: X5 (36 SWG max), X15 (27 SWG max), X30 (22 SWG max), X60 (18 SWG max)
• G and H fuse holder ratings available (limited availability) — contact Lawson Fuses sales team
• Compatible with Lawson Type MIN Miniature Fuse-Links (IEC 60127)

Applications

The Lawson Type SLY Miniature Fuse Holders, Slydlok Fuse Holder, PCB Fuse Holder, and Circuit Board Fuse Holder range is used across a wide range of sectors and applications:

• Electronics and instrumentation — PCB Fuse Holder and Circuit Board Fuse Holder for electronic equipment, power supplies, and control boards
• Industrial control panels — panel-mounted Miniature Fuse Holder for machine control and automation equipment
• Automotive and transport — Slydlok Fuse Holder antivibration design for vehicle-mounted and mobile equipment
• Marine and offshore — vibration-resistant Slydlok Fuse Holder for shipboard electrical systems
• Railway and rolling stock — Miniature Fuse Holder for on-board control and auxiliary power circuits
• Building services and HVAC — panel-mounted miniature fuse protection for control circuits
• Telecommunications and data — PCB Fuse Holder and Circuit Board Fuse Holder for telecom power supplies and rack equipment
• Test and measurement equipment — rewireable and cartridge miniature fuse holder applications

Why Choose Lawson Type SLY?

The Lawson Type SLY Slydlok Fuse Holder is specifically engineered to maintain a secure, low-resistance contact between the fuse-link and the holder even in high-vibration environments where conventional miniature fuse holders may allow the fuse to work loose over time. This antivibration characteristic makes the Type SLY the preferred Miniature Fuse Holder choice for demanding applications in automotive, marine, railway, and industrial plant environments.

With six wiring configurations available across four current ratings, plus rewireable fusewire options, the Type SLY PCB Fuse Holder and Circuit Board Fuse Holder range offers greater installation flexibility than almost any competing product. Manufactured by Lawson Fuses under an ISO 9001 accredited quality management system with test facilities accredited to ISO/IEC 17025, the Type SLY delivers the reliability and consistency that engineers and panel builders demand.

Q1. What is a Miniature Fuse Holder?

A Miniature Fuse Holder is a device designed to contain, protect, and mount miniature fuse-links in electrical and electronic circuits. It provides a secure mechanical and electrical connection for the fuse-link while also allowing safe, tool-free replacement when the fuse has operated. The Lawson Type SLY is a 240V Miniature Fuse Holder available in 5A, 15A, 30A, and 60A ratings, with multiple wiring configurations for both panel-mount and PCB mount applications.

Q2. What is a Slydlok Fuse Holder?

The Slydlok Fuse Holder is Lawson’s proprietary antivibration fuse holder design, developed specifically for applications where vibration could cause a standard miniature fuse holder to lose contact with the fuse-link. The Slydlok mechanism keeps the fuse-link firmly engaged in the holder even under continuous mechanical vibration — making it the preferred Miniature Fuse Holder choice for automotive, marine, railway, and industrial plant installations.

Q3. What is a PCB Fuse Holder and a Circuit Board Fuse Holder?

A PCB Fuse Holder (also called a Circuit Board Fuse Holder) is a miniature fuse holder designed to be mounted directly onto a printed circuit board, allowing a cartridge or miniature fuse-link to be installed and replaced in-circuit without soldering. The Lawson Type SLY is compatible with a range of PCB mount configurations and is suitable for use as a PCB Fuse Holder in electronic equipment, power supplies, instrumentation, and control boards rated up to 240V a.c.

Q4. What current ratings are available for the Type SLY Miniature Fuse Holder?

The Lawson Type SLY is available in four current ratings — 5A, 15A, 30A, and 60A — covering the range of miniature fuse protection requirements typically encountered in electronic equipment, instrumentation, and light industrial control applications. G and H ratings are also available with limited availability — contact the Lawson Fuses sales team for details.

Q5. What wiring configurations are available for the Type SLY Miniature Fuse Holder?

The Type SLY Miniature Fuse Holder is available in six wiring configurations: FW (Fusewire/rewireable), BC (Back Connected), MM (Midmount), BW (Busbar Wire), BCT (Back Connected Top), and BCB (Back Connected Bottom). This wide choice of configurations makes the Type SLY one of the most flexible Miniature Fuse Holders available for panel building and equipment design.

Q6. What is a rewireable fuse holder and how does it differ from a cartridge type?

A rewireable Miniature Fuse Holder (prefix X in the Type SLY range) uses fusewire rather than a pre-manufactured cartridge fuse-link. When the fuse operates, the old fusewire is removed and a new length of the correct gauge fusewire is fitted. Rewireable fuse holders are used in applications where fusewire is the preferred protection method, or where replacement cartridge fuse-links may not always be immediately available. Cartridge-type Miniature Fuse Holders (prefix W) use standard miniature cartridge fuse-links such as the Lawson Type MIN IEC 60127 range.

Q7. What fusewire gauges should be used with the rewireable Type SLY Miniature Fuse Holder?

The correct fusewire gauge depends on the current rating of the holder: 5A holders (X5) use a maximum of 36 SWG fusewire; 15A holders (X15) use a maximum of 27 SWG; 30A holders (X30) use a maximum of 22 SWG; and 60A holders (X60) use a maximum of 18 SWG. Always use the correct gauge fusewire to ensure the fuse operates at the intended current rating and provides proper circuit protection.

Q8. What fuse-links are compatible with the Type SLY Slydlok Fuse Holder?

The Type SLY is designed for use with Lawson miniature fuse-links (IEC 60127 / Type MIN), Slydlok cartridge fuse-links, and rewireable fuse-links. Always confirm the fuse-link type, current rating, and dimensions are compatible with the specific holder reference before installation.

Q9. Why is the Slydlok antivibration design important?

In many industrial, automotive, marine, and railway applications, continuous mechanical vibration can cause standard Miniature Fuse Holders to lose contact with the fuse-link — resulting in intermittent faults or nuisance disconnections even when the fuse has not operated. The Slydlok Fuse Holder’s antivibration design locks the fuse-link securely in place, maintaining consistent electrical contact and eliminating vibration-induced connection issues. This makes the Type SLY the preferred Miniature Fuse Holder for all vibration-prone environments.

Q10. How do I order the Lawson Type SLY Miniature Fuse Holder?

The Type SLY Miniature Fuse Holder, Slydlok Fuse Holder, PCB Fuse Holder, and Circuit Board Fuse Holder range is available through the Lawson Fuses sales team and their network of authorised sales partners and electrical wholesalers across the UK. Contact Lawson Fuses directly for trade pricing, availability by rating and wiring configuration, and technical support for your installation or design application.