The EM278503 is a 3-pole, PCB mount screwless terminal block from the EuroMag EM2785 series, designed for easy wire termination. It is rated for 8A and 300V and accepts a wire range of #14-22 AWG. The block features a 45° wire entry, 5.00mm center spacing, tin-plated brass contacts, and a UL 94V0 thermoplastic housing. Its modular construction includes dovetails, allowing multiple blocks to be interlocked to create custom lengths, making it a flexible solution for various PCB applications requiring reliable, tool-free connections.