{"product_id":"ot-copper-crimp-ring-terminals-3a-250a-cable-wire-ends","title":"OT Copper Crimp Ring Terminals 3A–250A | Cable Wire Ends","description":"\n\u003ch2\u003eOT Series Copper Crimp Ring Terminals – Reliable Wire Connections from 3A to 250A\u003c\/h2\u003e\n\u003cp\u003eAchieve secure, professional-grade electrical connections with these \u003cstrong\u003eOT Type Copper Open Crimping Ring Terminals\u003c\/strong\u003e. Made from high-purity purple copper, these crimp connectors deliver outstanding conductivity and long-lasting durability for a wide range of wiring applications — from automotive and marine wiring to industrial panels, battery banks, and home electrical projects.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Range of Sizes:\u003c\/strong\u003e Available in OT-3A, OT-5A, OT-10A, OT-20A, OT-30A, OT-40A, OT-50A, OT-60A, OT-80A, OT-100A, OT-150A, OT-200A, and OT-250A — covering wire gauges from 1–2.5 mm² up to large cable runs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Purity Purple Copper:\u003c\/strong\u003e Excellent electrical conductivity, corrosion resistance, and mechanical strength for dependable, long-term performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOpen-Barrel Design:\u003c\/strong\u003e Easy to crimp with standard crimping tools; the open ring end fits securely over bolt terminals and bus bars.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafe \u0026amp; Reliable:\u003c\/strong\u003e Low-voltage rated (below 50V AC or 75V DC); no hazardous chemicals.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Packaging:\u003c\/strong\u003e Available in packs of 5, 10, or 50 — stock up for any job size.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy to Use:\u003c\/strong\u003e Simply match the amperage rating to your wire size, insert the wire, and crimp — no soldering required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e OT Series Crimp Ring Terminal (Open Barrel)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Purple (High-Purity) Copper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Copper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize Range:\u003c\/strong\u003e OT-3A to OT-250A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Wire:\u003c\/strong\u003e OT-3A = 1–2.5 mm² wire (and up proportionally)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e Low Voltage — Below 50V AC \/ 75V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery Included:\u003c\/strong\u003e No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomotive \u0026amp; marine wiring harnesses\u003c\/li\u003e\n  \u003cli\u003eBattery terminals and bus bar connections\u003c\/li\u003e\n  \u003cli\u003eIndustrial control panels and switchboards\u003c\/li\u003e\n  \u003cli\u003eSolar panel and inverter wiring\u003c\/li\u003e\n  \u003cli\u003eHome electrical and DIY wiring projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-2-pin-quick-splice-spring-wire-connectors-lock-terminals\"\u003e10pcs 2-Pin Spring Wire Connectors – Quick Splice Lock Terminals\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-self-tapping-screws-m2-2-m4-8-phillips-wood-hinge\"\u003e10PCS Stainless Steel Self-Tapping Screws M2.2–M4.8 Phillips\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/12pcs-16mm-momentary-push-button-switch-1no-metal-2-pin-self-reset\"\u003e12pcs 16mm Momentary Push Button Switch 1NO Metal 2-Pin Self-Reset\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What wire size is compatible with the OT-3A copper crimp ring terminal?\u003c\/h4\u003e\n\u003cp\u003eA: The OT-3A terminal is designed for 1–2.5 mm² (square) wire. Each size in the OT series corresponds to a specific wire gauge range — always match the terminal amperage rating to your cable's cross-sectional area for the safest, most reliable connection.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need a special crimping tool for these OT copper ring terminals?\u003c\/h4\u003e\n\u003cp\u003eA: These OT series open-barrel ring terminals work with standard cable crimping tools readily available at hardware stores. No soldering is required — simply insert your wire and crimp firmly for a secure, professional connection.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can these copper crimp terminals be used outdoors or in automotive applications?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The high-purity purple copper construction offers good corrosion resistance, making these terminals suitable for automotive, marine, solar, and other demanding environments. For extremely harsh or fully exposed outdoor conditions, additional insulation or heat-shrink tubing is recommended for added protection.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What wire size is compatible with the OT-3A copper crimp ring terminal?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The OT-3A terminal is designed for 1–2.5 mm² (square) wire. Each size in the OT series corresponds to a specific wire gauge range — always match the terminal amperage rating to your cable's cross-sectional area for the safest, most reliable connection.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need a special crimping tool for these OT copper ring terminals?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These OT series open-barrel ring terminals work with standard cable crimping tools readily available at hardware stores. No soldering is required — simply insert your wire and crimp firmly for a secure, professional connection.\"}}, {\"@type\": \"Question\", \"name\": \"Can these copper crimp terminals be used outdoors or in automotive applications?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The high-purity purple copper construction offers good corrosion resistance, making these terminals suitable for automotive, marine, solar, and other demanding environments. For extremely harsh or fully exposed outdoor conditions, additional insulation or heat-shrink tubing is recommended for added protection.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/68k0rh-yt.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/68k0rh-yt.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"OT Copper Crimp Ring Terminals 3A–250A | Cable Wire Ends\", \"item\": \"https:\/\/68k0rh-yt.myshopify.com\/products\/ot-copper-crimp-ring-terminals-3a-250a-cable-wire-ends\"}]}\u003c\/script\u003e","brand":"Richie's","offers":[{"title":"OT-250A \/ 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