{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"387217303","brand":"Molex","brandSlug":"molex","productSlug":"387217303","canonicalUrl":"https://icsourcedirect.com/molex/387217303","factsUrl":"https://icsourcedirect.com/api/mcp/products/387217303","rawCanonicalId":null},"summary":{"shortDescription":"Molex Beau 38721 387217303 barrier strip, 3 circuits, 0.375\" (9.53mm) pitch, 20 A, 300 V, 1 row, black, chassis/panel mount, screw top with captive plate, quick-connect (0.187\") bottom, 12-22 AWG, UL94 V-0, bulk.","salesMarkdown":"The 387217303: Top termination uses screws with a captive plate — the plate stays captured under the screw head, so it won't drop out during field wiring. The bottom termination is a 0.187\" quick-connect tab, insulated, for pre-made harness leads or spade terminals. Wire range is 12-22 AWG, covering common power and control circuit sizes. The terminal screw is steel with a zinc clear chromate finish. Against the 2-circuit 387217302 at the same 0.375\" pitch, this 3-circuit block adds one position for a third wire entry — the footprint grows by one pitch increment, so a panel cutout or DIN-rail adapter designed for the 2-circuit version won't directly accept this one without extra space. Against the 387216703 (also 3-circuit, same pitch), the key difference is top termination: 387217303 uses screws with a captive plate, while 387216703 uses plain screws. The captive plate holds the wire without the screw tip digging into the conductor — a practical advantage in high-vibration or repeated-termination service. The 387216703 is also rated 15 A vs this unit's 20 A, so the captive-plate version carries more headroom.","metaTitle":"Molex Beau 38721 387217303 Barrier Strip, 3 Circuit, 0.375\" Pitch","metaDescription":"Molex Beau 38721 387217303 barrier strip, 3 circuits, 0.375\" pitch, 20 A, 300 V, panel mount, screw top with captive plate, quick-connect bottom, UL94 V-0, ROHS3. Active production","metaKeywords":null},"attributes":{"series":"Beau 38721","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Color":"Black","Pitch":"0.375\\\" (9.53mm)","title":"387217303","Series":"Beau 38721","Package":"Bulk","Features":"Flange","Wire Gauge":"12-22 AWG","description":"CONN BARRIER STRIP 3CIRC 0.375\\","Barrier Type":"2 Wall (Dual)","Mounting Type":"Chassis, Panel","Number of Rows":"1","Voltage Rating":"300V","Top Termination":"Screws with Captive Plate","Bottom Termination":"Quick Connect (0.187\\\"), Insulated","Number of Circuits":"3","Base Product Number":"038721","Terminal Block Type":"Barrier Block","Current Rating (Amps)":"20A","Material - Insulation":"Polybutylene Terephthalate (PBT), Glass Filled","Operating Temperature":"-40°C ~ 100°C","Terminal Screw Finish":"Zinc, Clear Chromate","Number of Wire Entries":"3","Terminal Screw Material":"Steel","Material Flammability Rating":"UL94 V-0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.22","priceTiers":[{"qty":1,"price":"$3.22000","currency":"USD"},{"qty":10,"price":"$2.45400","currency":"USD"},{"qty":25,"price":"$2.29880","currency":"USD"},{"qty":50,"price":"$2.04340","currency":"USD"},{"qty":100,"price":"$1.99910","currency":"USD"},{"qty":250,"price":"$1.84360","currency":"USD"},{"qty":500,"price":"$1.66590","currency":"USD"},{"qty":1000,"price":"$1.47709","currency":"USD"},{"qty":5000,"price":"$1.38824","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/387217303/alternatives.json"},"ai":{"faq":[{"question":"Will 387217303 drop into a panel cutout made for the 2-circuit 387217302?","answer":"No — the 3-circuit block is one pitch increment longer than the 2-circuit version. The mounting hole pattern and overall length differ, so the panel cutout or DIN-rail adapter must be sized for the 3-circuit footprint."},{"question":"Where can I buy the 387217303 and how is it quoted?","answer":"Sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock-holding or fixed price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/387217303","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/387217303 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}}