Switchcraft MT388 1/4" TS-F Longframe Dual Jack

High quality telephone jacks are essentially doubled versions of MT-Jax®. Twin-Jax® used in Switchcraft Series 2400, 2600 and JP® Jack Panels and other standard jack panels. Twin-Jax® have direct WEco equivalents.

Frame mounting ears are on 1.375 inch centers, and bushings are on .625 inch centers. Jacks are double, 2-conductor type with a crossover wiring feature. If a mating plug is inserted in either bushing, crossover contacts are opened (see schematic). MT388 (solder lugs) is equivalent to WEco jack 410A, 410C and 410D. WMT388 (wire-wrapping) is equivalent to WEco 410AM.