JB3 16A Junction Box for Wago Connectors

The JB3 is a compact 3-way electrical junction box designed for safe and efficient low-voltage and mains wiring connections in residential, commercial, and outdoor lighting installations. It is widely used as a maintenance-free connection point where multiple circuits or lighting runs need to be securely joined.

Manufactured from durable, high-quality thermoplastic, the JB3 provides strong mechanical protection while maintaining electrical insulation and long-term reliability. Its compact, low-profile design makes it suitable for installation in tight spaces such as ceilings, walls, or outdoor enclosures.

The JB3 typically features a 1 input to 3 (or up to 8 in some variants) output configuration, allowing flexible distribution of power to multiple loads. It is designed for use with lever connectors (such as WAGO-type systems in compatible versions), enabling fast, tool-free installation and secure conductor termination.

With a high level of environmental protection—often rated up to IP66 depending on manufacturer variant—the JB3 is suitable for both indoor and outdoor use, including LED lighting systems, garden lighting, and general wiring junctions exposed to moisture or dust.