{"product_id":"square-d-dtu321-double-throw-safety-switch-3-pole-30a-240vac-non-fusible-f-series-nema-1-transfer-switch","title":"Square D DTU321 Double Throw Safety Switch – 3 Pole – 30A – 240VAC – Non-Fusible – F Series – NEMA 1 – Transfer Switch","description":"\u003cp data-start=\"221\" data-end=\"583\"\u003eThe Square D DTU321 is a double throw safety switch designed for reliable power transfer between two separate sources in residential, commercial, and light industrial electrical systems. Manufactured by Schneider Electric under the Square D brand, it is built for demanding environments where dependable switching and load transfer are required.\u003c\/p\u003e\n\u003cp data-start=\"585\" data-end=\"906\"\u003eThis 3-pole, 30A switch is rated for 240VAC operation and is part of the Square D F Series, offering high mechanical endurance beyond standard NEMA KS-1 and UL98 requirements. It is designed to transfer a load between two power sources safely and efficiently and can be padlocked in ON and OFF positions for added safety.\u003c\/p\u003e\n\u003cp data-start=\"908\" data-end=\"1081\"\u003eThe DTU321 is a non-fusible double throw safety switch with a rugged enclosure design, making it suitable for harsh operating conditions and frequent switching applications.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1yl5694\" data-start=\"1088\" data-end=\"1106\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul data-start=\"1108\" data-end=\"1559\"\u003e\n\u003cli data-section-id=\"1ii30bw\" data-start=\"1108\" data-end=\"1127\"\u003eBrand: Square D\u003c\/li\u003e\n\u003cli data-section-id=\"1mzzcj3\" data-start=\"1128\" data-end=\"1164\"\u003eManufacturer: Schneider Electric\u003c\/li\u003e\n\u003cli data-section-id=\"wc125v\" data-start=\"1165\" data-end=\"1188\"\u003ePart Number: DTU321\u003c\/li\u003e\n\u003cli data-section-id=\"1jz1p04\" data-start=\"1189\" data-end=\"1209\"\u003eSeries: F Series\u003c\/li\u003e\n\u003cli data-section-id=\"1dkiojr\" data-start=\"1210\" data-end=\"1246\"\u003eType: Double Throw Safety Switch\u003c\/li\u003e\n\u003cli data-section-id=\"af1xqf\" data-start=\"1247\" data-end=\"1272\"\u003eConfiguration: 3 Pole\u003c\/li\u003e\n\u003cli data-section-id=\"179harl\" data-start=\"1273\" data-end=\"1291\"\u003ePhase: 3 Phase\u003c\/li\u003e\n\u003cli data-section-id=\"1fll0xq\" data-start=\"1292\" data-end=\"1315\"\u003eCurrent Rating: 30A\u003c\/li\u003e\n\u003cli data-section-id=\"woy20l\" data-start=\"1316\" data-end=\"1342\"\u003eVoltage Rating: 240VAC\u003c\/li\u003e\n\u003cli data-section-id=\"1g7s17n\" data-start=\"1343\" data-end=\"1388\"\u003eDuty Type: Double Throw \/ Transfer Switch\u003c\/li\u003e\n\u003cli data-section-id=\"18vov14\" data-start=\"1389\" data-end=\"1416\"\u003eFusibility: Non-Fusible\u003c\/li\u003e\n\u003cli data-section-id=\"q2f2qy\" data-start=\"1417\" data-end=\"1451\"\u003eInterrupt Rating: 200kA @ 240V\u003c\/li\u003e\n\u003cli data-section-id=\"gfpafl\" data-start=\"1452\" data-end=\"1487\"\u003eMounting Style: Surface Mounted\u003c\/li\u003e\n\u003cli data-section-id=\"oe36rd\" data-start=\"1488\" data-end=\"1516\"\u003eEnclosure Rating: NEMA 1\u003c\/li\u003e\n\u003cli data-section-id=\"mpb2a7\" data-start=\"1517\" data-end=\"1559\"\u003eApplication Type: Load Transfer Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"xldzoc\" data-start=\"1566\" data-end=\"1591\"\u003eConstruction Features\u003c\/h3\u003e\n\u003cul data-start=\"1593\" data-end=\"1904\"\u003e\n\u003cli data-section-id=\"17twcgg\" data-start=\"1593\" data-end=\"1640\"\u003eHeavy-duty double throw switching mechanism\u003c\/li\u003e\n\u003cli data-section-id=\"1s4putg\" data-start=\"1641\" data-end=\"1701\"\u003eDesigned for reliable transfer between two power sources\u003c\/li\u003e\n\u003cli data-section-id=\"1s5o2o8\" data-start=\"1702\" data-end=\"1754\"\u003eHigh mechanical endurance for frequent operation\u003c\/li\u003e\n\u003cli data-section-id=\"ktgw4t\" data-start=\"1755\" data-end=\"1809\"\u003ePadlockable ON\/OFF positions for safety compliance\u003c\/li\u003e\n\u003cli data-section-id=\"96e8yh\" data-start=\"1810\" data-end=\"1854\"\u003eRugged industrial-grade enclosure design\u003c\/li\u003e\n\u003cli data-section-id=\"a2gkmg\" data-start=\"1855\" data-end=\"1904\"\u003eSuitable for harsh and demanding environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"wggvqn\" data-start=\"1911\" data-end=\"1927\"\u003eApplications\u003c\/h3\u003e\n\u003cul data-start=\"1929\" data-end=\"2158\"\u003e\n\u003cli data-section-id=\"ocn1w7\" data-start=\"1929\" data-end=\"1962\"\u003ePower source transfer systems\u003c\/li\u003e\n\u003cli data-section-id=\"1qvorc7\" data-start=\"1963\" data-end=\"1993\"\u003eBackup generator switching\u003c\/li\u003e\n\u003cli data-section-id=\"1be40w\" data-start=\"1994\" data-end=\"2042\"\u003eCommercial and industrial electrical systems\u003c\/li\u003e\n\u003cli data-section-id=\"16isji7\" data-start=\"2043\" data-end=\"2078\"\u003eResidential backup power setups\u003c\/li\u003e\n\u003cli data-section-id=\"1xj52e6\" data-start=\"2079\" data-end=\"2119\"\u003eCritical load switching applications\u003c\/li\u003e\n\u003cli data-section-id=\"1465s11\" data-start=\"2120\" data-end=\"2158\"\u003eHVAC and building power management\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1jx5a9v\" data-start=\"2165\" data-end=\"2195\"\u003eCertifications \u0026amp; Standards\u003c\/h3\u003e\n\u003cul data-start=\"2197\" data-end=\"2330\"\u003e\n\u003cli data-section-id=\"1w9xzw2\" data-start=\"2197\" data-end=\"2210\"\u003eUL Listed\u003c\/li\u003e\n\u003cli data-section-id=\"breav2\" data-start=\"2211\" data-end=\"2228\"\u003eCSA Certified\u003c\/li\u003e\n\u003cli data-section-id=\"egxx7u\" data-start=\"2229\" data-end=\"2264\"\u003eMeets NEMA and NEC requirements\u003c\/li\u003e\n\u003cli data-section-id=\"n7r0tl\" data-start=\"2265\" data-end=\"2330\"\u003eDesigned per Square D \/ Schneider Electric F Series standards\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Square D","offers":[{"title":"NEW","offer_id":48528678387961,"sku":"DTU321","price":922.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/DTU321-New-1.webp?v=1781448782","url":"https:\/\/mycircuitbreakers.com\/products\/square-d-dtu321-double-throw-safety-switch-3-pole-30a-240vac-non-fusible-f-series-nema-1-transfer-switch","provider":"My Circuit Breakers","version":"1.0","type":"link"}