A101J51ZQ0004 is a Gemini A Series rocker switch designed for general-purpose switching applications with electrical ratings of 2A at 250VAC or 5A at 120VAC. The switch features an epoxy seal for environmental protection and is constructed with a DAP case (30–40% glass-filled, UL94 V–0), 304 stainless steel frame, and C194 copper terminals with gold-over-nickel finish. The actuator is phenolic (UL94 V–1), the rocker cap is nylon (UL94 V–1), and the switch includes a music wire spring and nickel-plated steel pivot pin for reliable operation. This rocker switch is suitable for consumer appliances, industrial control panels, and equipment requiring compact, durable switching with consistent tactile feedback and long operational life.