RS PRO Insulated Ring Terminal Blue, M4 Stud Size, 16 - 14 AWG, 1.5 - 2.5mm², Vinyl PVC, 21mm Length, Copper/Tin 534-581

RS PRO 534-581 insulated Ring Terminal is a high-quality crimp connector that ensures both durability and reliability for wiring applications in pressures of demanding environments. Designed for direct connection to M4 stud posts, this terminal enables secure mechanical and electrical links between various types of equipment and wiring harnesses.

The terminal accepts conductor sizes ranging from 16 AWG to 14 AWG (1.5 - 2.5mm²), making it flexible for industrial control cabinets, machinery wiring, automotive electrical harnesses, and general electrical panel applications. Its blue vinyl (polyvinyl chloride, PVC) insulation provides electrical isolation, robust wire insulation, and rapid visual identification of compatible cable sizes during installation or maintenance.

The body is constructed from highly conductive copper and finished with a tin-plated surface, maximizing both electrical performance and corrosion resistance. With a stud hole size of M4, an outer ring diameter of 8 mm, and an inner ring diameter precisely 4.16 mm, the terminal ensures a precise, vibration-resistant installation.

The terminal's overall length is 21 mm and features a barrel designed for easy wire insertion and secure crimping. A thickness of 0.8 mm adds strength and mechanical stability to withstand industrial handling. Its maximum operating temperature of 75°C supports usage in a broad range of environments from control panels to power supplies and communication equipment. Colour-coded insulation allows for fast on-site identification and sorting.

Typical applications include industrial automation cabinets, machinery, switchgear, automotive wiring, low-voltage domestic appliances, and any electrical system where robust and secure stud-terminated cable connections are essential for safe operation and long service life.

For optimal quality, use with a ratchet or approved crimping tool to achieve a gas-tight connection and prevent partial crimps or early mechanical failure. The RS PRO 534-581 terminal is a professional’s choice for dependable, easy-to-install ring terminations in both new builds and repair tasks.

Browse more industrial terminals and connection solutions in the RS PRO range on EnvMart to fit your specific industrial, automotive, or controls project needs.