The DL-CT502D, 505D, 525D, and 602D are compact PCB-mount mini current transformers designed for precision AC current measurement across a wide range of applications. Featuring a toroidal coil structure with copper windings, these single-phase transformers deliver reliable and accurate readings with multiple ratio options, including 1000/1 and 2000/1, making them highly versatile for various electrical system requirements. Their space-saving design integrates seamlessly onto PCBs, making them ideal for use in tight or constrained installations. Built with a 4-pin configuration, these transformers support easy board mounting and stable connectivity. They are rated for a compressive strength of 3kV/50Hz/1min and operate reliably across an ambient temperature range of -40°F to 185°F (-40°C to +85°C). The flame-retardant housing meets UL94-V0 standards, ensuring durability and safety in demanding environments. These current transformers measure and output alternating current, making them well-suited for energy monitoring, power management, and industrial control systems.