Unidentified MFG - Vintage 4 Position Single Row Tri-Barrier, Wire-Board, Terminal Block

Unidentified MFG - Vintage 4 Position Single Row Tri-Barrier, Wire-Board, Terminal Block This is a Vintage Buchanan 4-position, single-row tri-barrier terminal block designed for secure wire-to-board connections. Its primary function is to prevent electrical shorts by using a tri-barrier housing that safely isolates stray or frayed wire ends. These connectors provide physical walls (barriers) between screw terminals to safely isolate high-current wiring and prevent electrical shorts. Status: Discontinued Key Technical Specifications Number of Positions: 4 Circuits, Single Row, Tri-Barrier Pitch (Centerline): 0.335” (8.5 mm) Bottom Termination: Printed circuit (PCB) solder pin Top Termination: Screw terminals (6-32 zinc chromate-plated steel slot screws) Electrical Ratings: Supports up to 25A maximum current and 300V / 600V voltage handling Material Construction: Black thermoplastic housing (UL94 V-0 flammability rating) with tin-plated copper alloy contacts. Dimensions: 1.375” Length x 0.615” Width x 0.5” Above Board Height Component Features Tri-Barrier Design: Three walls surrounding each terminal to provide exceptional insulation between neighboring positions and adjacent PCB components. Wire-Ready Screws: Shipped with backed-out screws featuring interrupted threads to ensure rapid assembly and prevent field screws from vibrating loose. High Density Friendly: Built vertically with a total physical length of 1.375”, optimized for space-restricted circuitry layout. Exceed Specifications of MG8500 New Old Stock – Older Buchanan Connectors were made in USA and had Slotted Screw Terminals No Counterfeits – No China – No Delays – No Disappointments Vintage – New Old Stock