The LC 45/450-1050/54 O4A NF SR EXC3 is a switched-mode power supply manufactured by Tridonic. It features a high efficiency of up to 94% and a low power loss. It is designed with an extended lifetime of up to 50,000 hours, making it suitable for continuous, long-term use. It also features thermal protection and overload detection and protection. Additionally, it is designed with LED indication, indicating the normal, overload, and short circuit status. This power supply also has a corrosion-resistant design, making it suitable for various application conditions.