A203MD9AB04 is a 2-pole toggle switch designed for PCB mounting applications with On-Off-On switching positions. Based on the Gemini Series A product line from TE Connectivity, this switch features silver (Ag) contact material for reliable electrical performance and is configured as a 2-pole device suitable for general-purpose switching applications. The switch is part of TE Connectivity's core program of toggle switches and is commonly used in control panels, instrumentation, and electronic equipment where multi-pole switching functionality is required. Its PCB-mount design enables direct integration into circuit boards, providing a compact and reliable switching solution.