The NC3FBH1 is 3 pole female XLR receptacle, grounding: mating connector shell to pin1 and front panel, horizontal PCB mount The NC3FBH1 has rated voltage of < 50 V and rated current per contact of 6 A and dielectric strength of 1,5 kVdc . Same as A series with exception of a metal mounting flange featuring continuous circumferential ground contact to chassis for best EMC practice. UL recognized component.