3969921

The 3969921 from Phoenix Contact delivers military-grade durability for Terminal Blocks - Accessories applications, featuring hermetic sealing that exceeds IP68 requirements. Its programmable interface enables dynamic impedance matching from 50 to 75 .Engineered with Test Terminal Strip construction, this version utilizes nickel-plated brass contacts that demonstrate 10,000 mating cycles without significant contact resistance degradation.The 5 arrangement supports redundant power supply configurations with individual fuse protection, complying with NEC Class 2 circuit requirements.When integrated with CLIPLINE RSCWE Series, the assembly achieves MIL-STD-202G vibration resistance, critical for aerospace and defense applications.The Gray material formulation provides UV resistance for outdoor installations, maintaining color fastness after 5,000 hours of accelerated weathering testing.