{"product_id":"pfls-3y","title":"PFLS-3Y-S120M40A - PowerFit 400A Source Line Connector, Yellow (L3)","description":"\u003c!-- Combined Shopify product HTML for PFLS-3Y-S120M40A --\u003e\n\u003cstyle\u003e\n.kupo-section-title {\n  margin: 1.25rem 0 1rem 0;\n  font-size: 22px !important;\n  font-weight: 700;\n  line-height: 1.3;\n  color: #005F96 !important;\n  letter-spacing: 0;\n}\n.product-description h3 {\n  color: #005F96 !important;\n  font-size: 18px !important;\n  font-weight: bold;\n  margin-top: 1.5rem;\n  margin-bottom: 0.75rem;\n  line-height: 1.35;\n  letter-spacing: 0;\n}\n.product-description,\n.product-description p,\n.product-description li {\n  color: #222222 !important;\n}\n.kupo-faq-seo-block {\n  margin: 3rem 0 0 0;\n  padding: 0;\n  border: 0;\n  background: transparent;\n  box-sizing: border-box;\n}\n.kupo-faq-seo-block h2 {\n  margin: 0 0 1.6rem 0;\n  font-size: 22px !important;\n  font-weight: 700;\n  line-height: 1.4;\n  color: #005F96 !important;\n}\n.kupo-faq-seo-item {\n  border-top: 1px solid #ececec;\n  padding: 0.8rem 0;\n}\n.kupo-faq-seo-item:first-of-type {\n  border-top: 0;\n  padding-top: 0;\n}\n.kupo-faq-seo-item h3 {\n  margin: 0 0 0.35rem 0;\n  font-size: 17px !important;\n  font-weight: 600;\n  line-height: 1.45;\n  color: #005F96 !important;\n}\n.kupo-faq-seo-item p {\n  margin: 0;\n  line-height: 1.6;\n  color: #222222 !important;\n}\n.kupo-download-section {\n  margin: 2rem 0 0 0;\n  padding: 0;\n  border: 0;\n  background: transparent;\n  box-sizing: border-box;\n}\n.kupo-download-section h2 {\n  margin: 0 0 1rem 0;\n  font-size: 22px !important;\n  font-weight: 700;\n  line-height: 1.4;\n  color: #005F96 !important;\n}\n.kupo-download-link {\n  display: inline-flex;\n  align-items: center;\n  gap: 0.4rem;\n  font-size: 16px !important;\n  line-height: 1.5;\n  color: #111111 !important;\n  font-weight: 600;\n  text-decoration: underline;\n}\n\u003c\/style\u003e\n\u003csection class=\"product-description\" data-sku=\"PFLS-3Y-S120M40A\"\u003e\n  \u003ch2 class=\"kupo-section-title\"\u003eProduct Description\u003c\/h2\u003e\n\u003c!-- PowerFit 400A Line Source Connector (Yellow) | PFLS-3Y-S120M40A | 2026-03-23 --\u003e\n\n\u003cdiv class=\"product-description\" data-sku=\"PFLS-3Y-S120M40A\" data-color=\"Yellow\"\u003e\n\n  \u003cdiv class=\"product-overview\"\u003e\n    \u003cp\u003eThe PFLS-3Y-S120M40A is a 400A inline cable connector for L3 (Line 3) phase distribution, with the yellow L3 identification commonly used in USA 277\/480V systems. This Line Source connector houses the male contact and innovative key-release pin, enabling tool-free disconnection via push-and-twist engagement. Designed for industrial power systems requiring reliable, code-compliant phase identification.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"product-features\"\u003e\n    \u003ch3\u003eKey Features\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003eThe integrated male contact and key-release mechanism enable rapid, repeatable mating and unmating without dedicated tools. Simply push, twist, and release - the key pin disengages the connector cleanly on demand.\u003c\/li\u003e\n      \u003cli\u003eThe source variant uses a shorter polyoxymethylene (POM) cotter pin optimized for cable-mounted operation. If pin replacement or maintenance is needed, a small slotted screwdriver allows field disassembly without specialized equipment.\u003c\/li\u003e\n      \u003cli\u003eRated for 400A continuous with 120mm² cable. Contact resistance remains below 0.1 milliohms across the full amperage range.\u003c\/li\u003e\n      \u003cli\u003eSilicone O-ring and thermoplastic housing deliver IP67 protection when properly mated, protecting equipment in outdoor and high-moisture environments.\u003c\/li\u003e\n      \u003cli\u003eNot for current interruption: connect and disconnect only when the circuit is de-energized\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"product-certifications\"\u003e\n    \u003ch3\u003eCertifications \u0026amp; Standards\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003eTÜV Rheinland certified to IEC 61984 (ID 1111322264), CB and UKCA certified, CE marked, RoHS, and REACH compliant. UL94-V0 flammability rating ensures safe operation in critical industrial environments.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n\n  \u003cdiv class=\"product-applications\"\u003e\n    \u003ch3\u003eApplications\u003c\/h3\u003e\n    \u003cul\u003e\n\u003cli\u003eIndustrial distribution centers built to North American 277\/480V practice\u003c\/li\u003e\n\u003cli\u003eOutdoor and weatherproofed installations (IP67 sealed)\u003c\/li\u003e\n\u003cli\u003eHigh-cycle mating environments (500-cycle rated)\u003c\/li\u003e\n\u003cli\u003eCable-to-cable power transfer with standardized phase handoff\u003c\/li\u003e\n\u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"product-compatibility\"\u003e\n    \u003ch3\u003eCompatibility\u003c\/h3\u003e\n    \u003cp\u003eThe PFLS-3Y-S120M40A mates with corresponding PFLD (Line Drain) connectors and PFPS\/PFPD panel-mount variants. Compatible with major brands of single-pole power connectors. R120 reduction sleeve (brass, silver-plated) accommodates up to 16.50mm diameter wire.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"product-color-conventions\"\u003e\n    \u003ch3\u003ePhase \/ Wire Color Convention\u003c\/h3\u003e\n    \u003cimg src=\"https:\/\/pub-575371843efc4b84863e8e2a0298e68b.r2.dev\/Color-meaning\/Color-code-connectors.webp\" alt=\"Connector color code diagram\" style=\"max-width: 100%; margin: 1rem 0;\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"PFLS-3Y-S120M40A | PowerFit 400A Line Source, L3 (Phase C) Yellow (USA 277\/480V)\",\n  \"description\": \"KUPO PowerFit 400A Line Source single-pole connector with yellow housing for USA 277\/480V power distribution systems. Male Contact, key-release pin for safe disconnection, M40 cable gland with sealing bushing, IP67 rated when mated, silver-plated brass contacts, 400A, 1000V AC\/DC maximum, TÜV certified.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"KUPO\"\n  },\n  \"manufacturer\": {\n    \"@type\": \"Organization\",\n    \"name\": \"KUPO CO. LTD\",\n    \"url\": \"https:\/\/www.kupopower.com\"\n  },\n  \"category\": \"Electrical Connectors \u003e Single-Pole Connectors \u003e PowerFit\",\n  \"sku\": \"PFLS-3Y-S120M40A\",\n  \"mpn\": \"PFLS-3Y-S120M40A\",\n  \"color\": \"Yellow\",\n  \"material\": \"Non-conductive thermoplastic housing; Brass silver-plated contacts\",\n  \"additionalProperty\": [\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Voltage Rating\",\n      \"value\": \"1000V AC\/DC Maximum\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Amperage Rating\",\n      \"value\": \"400A Maximum\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Test Voltage\",\n      \"value\": \"4500V AC\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Short-Time Withstand Current\",\n      \"value\": \"16 kA for 1 s (short-time withstand)\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Insulation Resistance\",\n      \"value\": \"Greater than 5000 megohms at 500V AC\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Contact Resistance\",\n      \"value\": \"0.1 milliohms\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Connector Type\",\n      \"value\": \"Line Source (Male Contact)\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Connection Mechanism\",\n      \"value\": \"Push-and-Twist with Key-Release Mechanism\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Contact Material\",\n      \"value\": \"Brass (Silver-Plated)\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Housing Material\",\n      \"value\": \"Non-conductive high impact-resistant thermoplastic (UL94-V0 flame retardant)\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Cotter Pin Material\",\n      \"value\": \"POM (Polyoxymethylene)\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Cable Gland\",\n      \"value\": \"M40 x 1.5; gland insert CG-M4015-32 for cable Ø14 to 33 mm, or CG-M4015 for cable Ø12 to 18 mm\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Set Screw Torque\",\n      \"value\": \"10.5 N·m minimum\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"IP Rating\",\n      \"value\": \"IP67 when mated\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Flame Class\",\n      \"value\": \"UL94-V0\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Working Temperature Range\",\n      \"value\": \"-25 to 125 degrees Celsius\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Mating Cycles\",\n      \"value\": \"500\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"TÜV Certification ID\",\n      \"value\": \"1111322264\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Certifications\",\n      \"value\": \"TÜV Rheinland (IEC 61984), CB, CE, UKCA, RoHS, REACH\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Phase Convention\",\n      \"value\": \"L3 (Phase C) (USA 277\/480V)\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Housing Color\",\n      \"value\": \"Yellow\"\n    }\n  ]\n}\n\u003c\/script\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"kupo-faq-seo-block\" data-product-id=\"PFLS-3Y-S120M40A\" data-category=\"PowerFit 400A Connectors\"\u003e\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n  \u003cdiv class=\"kupo-faq-seo-item\"\u003e\n    \u003ch3\u003eWhy was PFLS-3Y-S120M40A designed with a key-release mechanism?\u003c\/h3\u003e\n    \u003cp\u003ePFLS-3Y-S120M40A is a KUPO PowerFit 400A line source connector with a yellow housing, identifying Line 3 (L3) under USA 277\/480V conventions. As the source side of an inline cable connection, it features the innovative key-release pin that enables tool-free disconnection. The push-and-twist mechanism secures the connection during operation while allowing rapid uncoupling when needed.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"kupo-faq-seo-item\"\u003e\n    \u003ch3\u003eWhat are the current and voltage specifications for PFLS-3Y-S120M40A?\u003c\/h3\u003e\n    \u003cp\u003ePFLS-3Y-S120M40A is rated for 400 amperes continuous with 120mm² cable. The maximum voltage rating is 1000V AC or DC. The insulation resistance exceeds 5000 megaohms at 500V AC, and the test voltage rating of 4500V AC provides substantial safety margin. Its short-time withstand rating is 16 kA for 1 second.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"kupo-faq-seo-item\"\u003e\n    \u003ch3\u003eWhy choose the yellow L3 variant (PFLS-3Y-S120M40A) for your installation?\u003c\/h3\u003e\n    \u003cp\u003eYellow marks L3 in the brown, orange, yellow phase sequence that is common practice for USA 277\/480V systems. In that convention the sequence is brown (L1), orange (L2), yellow (L3), with a gray neutral. It is widely used, but the NEC does not mandate phase colors, so always confirm against the project wiring drawing. On the Line Source connector, the yellow housing wraps the 170mm body including the area around the key-release mechanism. This means the phase is identifiable even during the push-and-twist connection process, reducing the chance of connecting to the wrong L3 circuit. Because yellow means L2 in the old UK sequence and is part of the green-and-yellow earth marking under IEC, clear phase labeling remains essential on international projects.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"kupo-faq-seo-item\"\u003e\n    \u003ch3\u003eIs PFLS-3Y-S120M40A independently tested and certified?\u003c\/h3\u003e\n    \u003cp\u003ePFLS-3Y-S120M40A is TÜV Rheinland certified to IEC 61984 (ID 1111322264) under Type Approval, Safety, and Regular Production Surveillance categories. It also holds CB and UKCA certificates, and carries CE marking, RoHS compliance (Restriction of Hazardous Substances), and REACH compliance. The housing material achieves a UL94-V0 flammability rating, which is the top rating in the UL94 vertical burn (V) series, meaning the material self-extinguishes within 10 seconds with no flaming drips. The key-release pin mechanism has been certified as part of the TÜV evaluation, ensuring that the disconnect feature meets the same safety standards as the connection itself.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"kupo-faq-seo-item\"\u003e\n    \u003ch3\u003eCan PFLS-3Y-S120M40A be integrated into an existing power distribution system?\u003c\/h3\u003e\n    \u003cp\u003ePowerFit connectors are designed to be compatible with major brands of single-pole power connector. Color-coded phase identification reduces the training needed for correct connection, the push-and-twist mechanism is intuitive even under stress, and IP67 protection means the connectors function in standing water. For L3 circuits using USA 277\/480V color conventions, the yellow PFLS-3Y-S120M40A ensures that phase identification remains consistent when mixing PowerFit connectors with existing inventory.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Why was PFLS-3Y-S120M40A designed with a key-release mechanism?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"PFLS-3Y-S120M40A is a KUPO PowerFit 400A line source connector with a yellow housing, identifying Line 3 (L3) under USA 277\/480V conventions. As the source side of an inline cable connection, it features the innovative key-release pin that enables tool-free disconnection. The push-and-twist mechanism secures the connection during operation while allowing rapid uncoupling when needed.\"}}, {\"@type\": \"Question\", \"name\": \"What are the current and voltage specifications for PFLS-3Y-S120M40A?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"PFLS-3Y-S120M40A is rated for 400 amperes continuous with 120mm² cable. The maximum voltage rating is 1000V AC or DC. The insulation resistance exceeds 5000 megaohms at 500V AC, and the test voltage rating of 4500V AC provides substantial safety margin. Its short-time withstand rating is 16 kA for 1 second.\"}}, {\"@type\": \"Question\", \"name\": \"Why choose the yellow L3 variant (PFLS-3Y-S120M40A) for your installation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yellow marks L3 in the brown, orange, yellow phase sequence that is common practice for USA 277\/480V systems. In that convention the sequence is brown (L1), orange (L2), yellow (L3), with a gray neutral. It is widely used, but the NEC does not mandate phase colors, so always confirm against the project wiring drawing. On the Line Source connector, the yellow housing wraps the 170mm body including the area around the key-release mechanism. This means the phase is identifiable even during the push-and-twist connection process, reducing the chance of connecting to the wrong L3 circuit. Because yellow means L2 in the old UK sequence and is part of the green-and-yellow earth marking under IEC, clear phase labeling remains essential on international projects.\"}}, {\"@type\": \"Question\", \"name\": \"Is PFLS-3Y-S120M40A independently tested and certified?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"PFLS-3Y-S120M40A is TÜV Rheinland certified to IEC 61984 (ID 1111322264) under Type Approval, Safety, and Regular Production Surveillance categories. It also holds CB and UKCA certificates, and carries CE marking, RoHS compliance (Restriction of Hazardous Substances), and REACH compliance. The housing material achieves a UL94-V0 flammability rating, which is the top rating in the UL94 vertical burn (V) series, meaning the material self-extinguishes within 10 seconds with no flaming drips. The key-release pin mechanism has been certified as part of the TÜV evaluation, ensuring that the disconnect feature meets the same safety standards as the connection itself.\"}}, {\"@type\": \"Question\", \"name\": \"Can PFLS-3Y-S120M40A be integrated into an existing power distribution system?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"PowerFit connectors are designed to be compatible with major brands of single-pole power connector. Color-coded phase identification reduces the training needed for correct connection, the push-and-twist mechanism is intuitive even under stress, and IP67 protection means the connectors function in standing water. For L3 circuits using USA 277\/480V color conventions, the yellow PFLS-3Y-S120M40A ensures that phase identification remains consistent when mixing PowerFit connectors with existing inventory.\"}}]}\u003c\/script\u003e\n\u003csection class=\"kupo-download-section\" data-product-id=\"PFLS-3Y-S120M40A\"\u003e\n  \u003ch2\u003eDownload\u003c\/h2\u003e\n  \u003ca class=\"kupo-download-link\" href=\"https:\/\/pub-87314d729f334121b80f91e16c4e7f60.r2.dev\/PFLS-3Y-S120M40A.pdf\" target=\"_blank\" rel=\"noopener\" download\u003e\n    Download Spec Sheet (PDF)\n  \u003c\/a\u003e\n\u003c\/section\u003e","brand":"KUPO Power","offers":[{"title":"PowerFit Single Pole (IP67) \/ 400A \/ Inline Connector","offer_id":68067491315932,"sku":"PFLS-3Y-S120M40A","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/3491\/5548\/files\/PFLS-3Y-S120M40A.jpg?v=1793858524","url":"https:\/\/kupopower.com\/products\/pfls-3y","provider":"KUPO Power","version":"1.0","type":"link"}