Socket & See ITLS400A Fused Test Leads
High Protection Fused Test Lead Set for Loop and RCD Testers
The Socket & See ITLS400A Fused Test Leads provide a robust, high-protection test lead solution for use with loop and RCD testers fitted with a standard IEC mains input socket. Designed for regular professional use, the set combines fused protection with Socket & See’s practical one-click connection system.
The Socket and See ITLS400A uses the harmonised mains conductor colours of brown and blue, while red and black strain reliefs provide a visual reminder of the previous and current colour conventions.
A key benefit of these Socket & See Fused Test Leads is the manufacturer’s one-click system. The fuse remains permanently in position when changing between the test prod and crocodile clip, so there is no need to repeatedly move the fuse from one accessory to another. This helps make changing connections quicker and more convenient during testing.
Supplied as a fused test lead set with clips and prods, the ITLS400A is built with robust construction suitable for regular use.
Order the Socket & See ITLS400A Fused Test Leads today – a robust fused lead set with clips and prods for compatible loop and RCD testers.
Socket & See ITLS400A Key Features
- High-protection fused test lead set
- Designed for loop and RCD testers
- Compatible with testers using a standard IEC mains input socket
- Includes clips and prods
- Socket & See one-click system
- Fuse remains in place when changing between prod and crocodile clip
- Harmonised brown and blue mains colours
- Red and black strain relief for colour-code reference
- Robust construction for regular professional use

Robust crocodile clips – Built for regular professional use
Why Choose the Socket & See ITLS400A?
The Socket and See Fused Test Leads are designed to make connection changes straightforward while maintaining the fused protection of the lead set.
The one-click system is particularly useful when alternating between prods and crocodile clips, as the fuse stays in position rather than needing to be transferred between accessories.
Compatibility with loop and RCD testers that use a standard IEC mains input socket also makes the ITLS400A a practical test lead option for a range of suitable electrical test instruments.
Technical Specifications
| Features | |
| Suitable Testers | Loop and RCD Testers |
| Tester Connection | Standard IEC Mains Input Socket |
| Lead Colours | Brown, Blue |
| Strain Relief Colours | Red, Black |
| Connection System | Socket & See One-Click System |
| Fuse Position | Remains in Place When Changing Accessories |
| Accessories | Clips and Prods |
| Construction | Robust, for Regular Use |
❓ Frequently Asked Questions (FAQ)
Q1: What are the Socket & See ITLS400A Fused Test Leads used with?
A. They are designed for loop and RCD testers using a standard IEC mains input socket.
Q2: What is the ITLS400A one-click system?
A. The one-click system allows the fuse to remain in place when changing between the prod and crocodile clip, avoiding the need to transfer the fuse between them.
Q3: What colours are the ITLS400A leads?
A. The leads use harmonised brown and blue mains colours, with red and black strain reliefs providing a reminder of the colour-code change.