The RU4S-C-A220 is a universal miniature 4-pole double-throw (4PDT) relay designed for general-purpose switching with a 220-240V AC coil. It features a maximum contact rating of 6A per pole and operates with a coil current of 4.2–5.0 mA at 50 Hz (3.6–4.2 mA at 60 Hz) with a coil resistance of 18,230 O at 20°C. The relay exhibits a pickup voltage of 80% maximum and a dropout voltage of 30% minimum, with a maximum continuous applied voltage of 110%. This relay includes a non-polarized green LED indicator, mechanical flag indicator for contact position confirmation, and a manual latching lever with color coding. It is lead-free, cadmium-free, and features no internal wires, making it environmentally compliant. The RU4S-C-A220 is UL Recognized, CSA Certified, and EN61810-1 compliant, making it suitable for industrial control, signaling, and switching applications where reliable miniature relay performance is required.