37552-ZW7-1A 1A Potted Key Switch - Overview. The 37552-ZW7-1A 1A Potted Key Switch is a vital ignition component designed to support the electrical and ignition systems within Honda marine engine systems. As a potted rotary key switch, it helps control engine startup and shutdown reliably. Its sealed construction enhances protection against environmental factors, ensuring long-lasting performance. Designed with compatibility in mind, it ensures seamless integration with existing parts, maintain