The Phoenix Contact PS-IH BK insulating sleeve is designed to ensure reliable electrical contact within various testing and bridging applications. Its robust construction allows for consistent performance in bridge shafts and test sockets with diameters of 2.3 mm or 4 mm. The modular design enables easy combination with other PS-...2,3MM test plugs, providing flexibility in system configuration. Manufactured in Germany, this black sleeve is rated for operation between -40°C and 100°C and meets flammability rating V2 according to UL 94. It is commonly used in industrial automation, electrical distribution, and control systems where reliable insulation and secure connections are critical.