CTAPF Compression Connectors Panduit CTAPF Compression Connectors feature copper-to-copper, splicing, and pigtailing capabilities. The connectors are color-coded for proper crimp die selection and provide a wide wire range, which minimizes inventory requirements. Panduit CTAPF Compression Connectors offer a high-strength ribbed design and are made from highly conductive wrought copper. The CTAPF series is UL-listed and CSA-certified up to 600V and 90°C.