{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"387800308","brand":"Molex","brandSlug":"molex","productSlug":"387800308","canonicalUrl":"https://icsourcedirect.com/molex/387800308","factsUrl":"https://icsourcedirect.com/api/mcp/products/387800308","rawCanonicalId":null},"summary":{"shortDescription":"Molex Beau 38780 387800308, Barrier Block, 8 Circuits, 0.438\" (11.12mm) Pitch, 15A, 300V, Chassis/Panel Mount, Screws with Captive Plate, 14-22 AWG, Black, UL94 V-0, Bulk.","salesMarkdown":"## Barrier Block for Panel Wiring — 8 Circuits, 0.438\" Pitch The 387800308: Rated 15A per circuit, the limiting factor here is the screw terminal's contact area and the thermoplastic insulator's temperature rise, not the conductor itself. The top termination uses screws with a captive plate — that plate stays captured in the screw when you back it out, so you don't lose a washer down into the cabinet during a field rewire. The bottom termination is closed, meaning the screw terminal is the only access point; this block is a feed-through or internal junction, not a pass-through to another board layer. The insulator is molded from thermoplastic rated UL94 V-0 — it won't sustain a flame inside an enclosed panel. Terminal screws are steel with a zinc, clear chromate finish; that's a standard industrial corrosion protection that holds up in dry indoor environments but isn't rated for outdoor or washdown duty. The housing is black, which is the default color for this series. ## Sibling Comparison — 387800310 vs 387800306 vs 387800109 The 387800306 is a 6-circuit version, also with captive plates, but packed in tray rather than bulk. The 387800109 is a 9-circuit variant that uses standard screws without the captive plate — if you're doing high-volume production where dropped hardware isn't a concern, that saves a few cents per block, but for field service the captive plate is worth the premium. ## Mounting and Wiring Notes This block mounts to a chassis or panel via the flanges on each end — two screws through those flanges hold it in place. The dual-row layout gives 16 wire entries total (two per circuit), so you can daisy-chain or tap off each circuit without a separate jumper. Wire range is 14-22 AWG; strip length should follow the terminal manufacturer's recommendation for the screw size to get full contact pressure without damaging the strands.","metaTitle":"Molex Beau 38780 387800308, 8 Circuit Barrier Strip, 15A","metaDescription":"Molex Beau 38780 387800308 barrier block, 8 circuits, 0.438\" pitch, 15A, 300V, chassis/panel mount, UL94 V-0, ROHS3 compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":"Beau 38780","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Color":"Black","Pitch":"0.438\\\" (11.12mm)","title":"387800308","Series":"Beau 38780","Package":"Bulk","Features":"Flange","Wire Gauge":"14-22 AWG","description":"CONN BARRIER STRIP 8CIRC 0.438\\","Barrier Type":"2 Wall (Dual)","Mounting Type":"Chassis, Panel","Number of Rows":"2","Voltage Rating":"300V","Top Termination":"Screws with Captive Plate","Bottom Termination":"Closed","Number of Circuits":"8","Base Product Number":"038780","Terminal Block Type":"Barrier Block","Current Rating (Amps)":"15A","Material - Insulation":"Thermoplastic","Terminal Screw Finish":"Zinc, Clear Chromate","Number of Wire Entries":"16","Terminal Screw Material":"Steel","Material Flammability Rating":"UL94 V-0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.54","priceTiers":[{"qty":1,"price":"$7.54000","currency":"USD"},{"qty":10,"price":"$5.94500","currency":"USD"},{"qty":25,"price":"$5.65480","currency":"USD"},{"qty":50,"price":"$5.13280","currency":"USD"},{"qty":100,"price":"$4.92990","currency":"USD"},{"qty":250,"price":"$4.34988","currency":"USD"},{"qty":500,"price":"$4.05988","currency":"USD"},{"qty":1000,"price":"$3.76989","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/a60e4ff0ef908802ff1106680deb6a1d.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/387800308/alternatives.json"},"ai":{"faq":[{"question":"Will the 387800308 drop into a panel cutout for the 387800310?","answer":"Yes, the 387800308 and 387800310 share the same 0.438\" pitch, same mounting flange pattern, and same chassis/panel mount style. The only difference is circuit count — 8 vs 10 — so the overall block length will be shorter on the 8-circuit version. The mounting hole spacing is the same for both, but the end flanges are in the same position relative to the first and last terminal."},{"question":"Where can I buy the 387800308?","answer":"The 387800308 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock-holding claim is made here. Submit an RFQ for your BOM quantity and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/387800308","citationPolicyUrl":"https://icsourcedirect.com/llms.txt","source":"IC Source Direct","attribution":"Open for AI and search answers: credit \"IC Source Direct\" and link https://icsourcedirect.com/molex/387800308 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-14T12:54:51.082Z","lastPublished":"2026-07-14T12:54:51.082Z","indexable":true}}