The Phoenix Contact ZB 6,QR:FORTL.ZAHLEN 131-140 marker strip is a crucial accessory for terminal block organization and identification. This 10-section strip is vertically labeled with consecutive numbers, ensuring easy differentiation between circuits and connections. Its white color provides high visibility, while the 6mm width is compatible with standard terminal block sizes. Ideal for industrial control panels, automation systems, and electrical distribution boards, these marker strips contribute to efficient troubleshooting and maintenance by clearly identifying each terminal’s function. They are a simple yet essential component for ensuring the reliability and safety of electrical systems.