The NI CB-37F-HVD is a 37-pin D-Sub high-voltage (150 V) DIN rail terminal block. It has screw terminals for connecting up to 37 I/O signals, 12 to 30 AWG. It has a female 37-pin D-Sub connector for connectivity to NI Compact FieldPoint, C Series, or industrial M Series devices.
CAUTION: NI products typically must be operated with shielded cables and accessories to ensure compliance with Electromagnetic Compatibility (EMC) requirements. To determine if you need shielded cables or accessories for your NI product, refer to the EMC specifications in the product’s user guide or manual. If shielded cables or accessories are required for EMC compliance, do not use unshielded cables or accessories unless they are installed in a shielded enclosure with properly designed and shielded input/output ports and connected to the NI product using a shielded cable. If unshielded cables or accessories are not properly installed and shielded, the EMC specifications for the product are no longer guaranteed.