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The distribution block classified as PTFIX 6/12X2,5-NS35A BK operates under a nominal voltage of 690 V and supports a nominal current of 24 A. Its push-in connection method accommodates conductor cross sections ranging from 0.14 mm² to 4 mm², while the rated cross section is set at 6 mm². This block is designed for mounting types NS 35/7.5 and NS 35/15 and is colored black.

Bridging between blocks is facilitated through the conductor shaft, with corresponding plug-in bridges available as accessories. The unit includes 13 connections per level, allowing for efficient distribution of electrical current. It maintains a degree of pollution rating of 3 and is suitable for overvoltage category III applications.

Additionally, the block is constructed from PA insulating material, ensuring a wide operational temperature range of -60 °C to 110 °C. It has passed stringent fire protection tests as per DIN EN 45545-2 and complies with IEC 60947-7-1 standards. The internal cylindrical gauge is A5, with a recommended stripping length between 10 mm and 12 mm for optimal connection efficiency.