The National Instruments NI-9978 Terminal Block Plug, part number 196938-01, is an essential component designed to facilitate reliable power connections for CompactRIO controllers. This terminal block plug features a robust 4-pin male COMBICON connector mated with a 4-pin female screw terminal block configuration, ensuring a secure and stable connection suitable for demanding industrial automation applications. Each package contains five plugs, each engineered to meet the rigorous requirements of industrial environments, enabling effective power delivery throughout system operations.

The NI-9978 is specifically optimized for CompactRIO system applications, allowing seamless integration with related devices, including wireless sensor network (WSN) measurement nodes and Ethernet gateways. The 4-pin architecture provides a dependable power supply, essential for maintaining system integrity and preventing disconnects that could compromise operational efficiency. To enhance usability, the NI-9978 includes a 2-position MINI-COMBICON power connector, coupled with an 18-position, side-entry screw-terminal I/O connector, facilitating versatile connectivity options for diverse applications.

Additionally, the product is accompanied by a strain relief accessory, which clamps onto the MINI-COMBICON connection to secure the power cable, making it particularly advantageous in environments with significant vibration. This feature minimizes the risk of unintended disconnections, ensuring continuous operation of connected devices. The NI-9978 Terminal Block Plug is a vital component for enhancing power connections and system resilience in automation systems.