The ULV4F23SS331 is an SPDT (Single Pole Double Throw) illuminated push-button switch designed for panel mounting. It has a cUL electrical rating of 3A at 250VAC and features silver contacts with a maximum contact resistance of 50mΩ. Constructed with a stainless steel housing and actuator, the switch is built for durability, offering a mechanical life of 500,000 cycles and an electrical life of 50,000 cycles at full load. It operates in temperatures from -20°C to 55°C and is sealed for IP67 ingress protection against dust and water. The integrated 3V green LED ring provides clear status indication, making it suitable for industrial controls, medical equipment, and other demanding applications.