Power Barrier Block, 2 Circuits, 0.500" Pitch
The Molex 389690002 is a 2-circuit barrier block from the 38969 series, designed for through-hole PCB mounting with PC pin termination. It carries a 50 A current rating at 600 V — the wide 0.500" (12.70 mm) pitch provides the creepage distance needed for that voltage class while leaving room for the 8-20 AWG wire range the captive-plate screw terminals accept. The 3-wall (tri) barrier design isolates each circuit from adjacent terminals, reducing the chance of accidental bridging during wiring or maintenance.
50 A per circuit and 600 V rating suit bus-level power distribution. The 0.500" pitch provides creepage for 600 V and accepts 8-20 AWG wire.
Comparison with the 4-Circuit Sibling
The 389690002 shares the same 0.500" pitch, 50 A rating, 600 V rating, and 3-wall barrier design as the 389690004 (4 circuits). The only decision-relevant difference is the circuit count: 2 positions vs 4. If the panel needs a multi-tap distribution point, the 4-circuit sibling consolidates the wiring into one block.