{"product_id":"totalgrow-hi-top-620w-led-top-light-bar","title":"TotalGrow High Intensity Top-Light 620W Bar LED Grow Light","description":"\u003ch4\u003e\u003c\/h4\u003e\u003ch2\u003eTotalGrow High Intensity Top-Light 620W Bar LED Grow Light\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe TotalGrow HI-Top 620 is a 46-inch LED top-lighting bar for commercial greenhouses and indoor farms that need serious photon output without the heat load and power draw of HPS. At 620 watts it delivers 1,734 µmol\/s at 2.8 µmol\/J. Its balanced full-spectrum diode mix works as supplemental lighting over greenhouse sun or as the sole light source in a closed grow room.\u003c\/p\u003e\n\n\u003cp\u003eThe fixture is passively cooled, with no fans or moving parts to fail. The IP65-rated bar is suitable for dry, damp and wet locations. The driver hangs on its own brackets, separate from the light, so the bar stays a slim 3\" × 3\" and casts minimal shade in greenhouse installs. With 0-10V dimming you can match intensity to each crop stage or tie the fixture into a central lighting controller. A 12V auxiliary output can power controller accessories.\u003c\/p\u003e\n\n\u003cp\u003eFor larger build-outs, optional linking cords share AC power between fixtures: up to 2 bars on 120V, 3 on 208V, or 4 on 230–277V. That means fewer drops and circuits to run. TotalGrow estimates a 40–60% energy reduction compared to HPS. If you're comparing bar formats, the newer \u003ca href=\"\/products\/totalgrow-high-intensity-top-light-660w-bar-led-grow-light\" style=\"color:#2c5530;\"\u003eTotalGrow High Intensity Top-Light 660W Bar\u003c\/a\u003e packs its output into a shorter 43-inch, IP66-rated body. You can also browse the full lineup of \u003ca href=\"\/collections\/totalgrow\" style=\"color:#2c5530;\"\u003eTotalGrow commercial grow lights\u003c\/a\u003e for under-canopy, vertical-rack and propagation options.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cstyle\u003e\n  .features-grid-container{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;padding:2rem 0;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;margin:0 auto;max-width:1240px;}\n  .feature-card{background-color:transparent;padding:1.5rem;border-radius:8px;text-align:center;flex:0 1 240px;box-sizing:border-box;}\n\u003c\/style\u003e\n\u003cdiv class=\"features-grid-container\"\u003e\n    \u003cdiv class=\"feature-card\"\u003e\n      \u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e⚡\u003c\/span\u003e\n      \u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003e1,734 µmol\/s at 2.8 µmol\/J\u003c\/h5\u003e\n      \u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003e620W of high-efficiency output for high-light crops and wide greenhouse coverage.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"feature-card\"\u003e\n      \u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🌈\u003c\/span\u003e\n      \u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eBalanced Full Spectrum\u003c\/h5\u003e\n      \u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003eWorks as supplemental or sole-source light across propagation, leafy greens, fruiting crops and cannabis.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"feature-card\"\u003e\n      \u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🎚️\u003c\/span\u003e\n      \u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003e0-10V Dimming\u003c\/h5\u003e\n      \u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003eDial in intensity by crop stage or connect to a lighting controller, with 12V aux power on board.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"feature-card\"\u003e\n      \u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e💧\u003c\/span\u003e\n      \u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eIP65, Fanless Design\u003c\/h5\u003e\n      \u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003ePassively cooled with zero moving parts and rated for dry, damp and wet locations.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"feature-card\"\u003e\n      \u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🔗\u003c\/span\u003e\n      \u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eAC Daisy-Chain Linking\u003c\/h5\u003e\n      \u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003eShare power across 2 bars at 120V or 4 at 240V with optional linking cords.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"feature-card\"\u003e\n      \u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🪞\u003c\/span\u003e\n      \u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eSide Reflector Add-On\u003c\/h5\u003e\n      \u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003eOptional clip-on reflector redirects light inward on edge rows for more uniform coverage.\u003c\/p\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1x HI-Top 620 LED light bar\u003c\/li\u003e\n\u003cli\u003e1x 100–277VAC driver unit\u003c\/li\u003e\n\u003cli\u003e1x DC power cord (light bar to driver)\u003c\/li\u003e\n\u003cli\u003e2x Light fixture mounting brackets\u003c\/li\u003e\n\u003cli\u003e2x Driver mounting brackets\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4 style=\"margin-bottom: 0;\"\u003eSpecifications\u003c\/h4\u003e\n\u003cstyle\u003e.styled-spec-container{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid #eee;border-radius:8px;margin-bottom:1em;}.styled-spec-table{width:100%;border-collapse:collapse;}.styled-spec-table thead{background-color:#f8f8f8;}.styled-spec-table th,.styled-spec-table td{padding:12px 15px;text-align:left;vertical-align:top;}.styled-spec-table th{font-weight:bold;color:#333;border-bottom:2px solid #ccc;}.styled-spec-table td{border-bottom:1px solid #eee;}.styled-spec-table tbody td:first-child{font-weight:500;color:#444;}.styled-spec-table tbody tr:last-child td{border-bottom:none;}\u003c\/style\u003e\n\u003cdiv class=\"styled-spec-container\"\u003e\n  \u003ctable class=\"styled-spec-table\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eSpecification\u003c\/th\u003e\n        \u003cth\u003eValue\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePower Consumption\u003c\/td\u003e\n        \u003ctd\u003e610W @ 115V \/ 620W @ 230V \/ 630W @ 277V\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePhoton Output (PPF)\u003c\/td\u003e\n        \u003ctd\u003e1,734 µmol\/s\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eEfficacy\u003c\/td\u003e\n        \u003ctd\u003e2.8 µmol\/J\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSpectrum\u003c\/td\u003e\n        \u003ctd\u003e203 – Balanced Full Spectrum\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCoverage (Sole Source)\u003c\/td\u003e\n        \u003ctd\u003e4' × 4' (16 sq ft) at 1,000 µmol\/m²\/s\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCoverage (Greenhouse Supplemental)\u003c\/td\u003e\n        \u003ctd\u003eUp to 70 sq ft at 225 µmol\/m²\/s\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eInput Voltage\u003c\/td\u003e\n        \u003ctd\u003e120–277VAC nominal (108–305VAC range), 50\/60 Hz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMax Input Current\u003c\/td\u003e\n        \u003ctd\u003e5.4A @ 115V \/ 2.7A @ 230V \/ 2.4A @ 277V\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePower Factor\u003c\/td\u003e\n        \u003ctd\u003e\u0026gt;0.90\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDimming\u003c\/td\u003e\n        \u003ctd\u003e0-10VDC (0.5V dim-off threshold)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAuxiliary Power\u003c\/td\u003e\n        \u003ctd\u003e12V, 300 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAC Daisy-Chain Limit\u003c\/td\u003e\n        \u003ctd\u003e2 @ 120V \/ 3 @ 208V \/ 4 @ 230–277V\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCooling\u003c\/td\u003e\n        \u003ctd\u003ePassive (no fans or moving parts)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eIngress Rating\u003c\/td\u003e\n        \u003ctd\u003eIP65; dry, damp and wet locations\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMax Ambient Temperature\u003c\/td\u003e\n        \u003ctd\u003e104°F (40°C)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eLight Bar Dimensions\u003c\/td\u003e\n        \u003ctd\u003e46\" × 3\" × 3\" (1176 × 72 × 77 mm)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDriver Dimensions\u003c\/td\u003e\n        \u003ctd\u003e15.3\" × 2.8\" × 1.7\"\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eWeight\u003c\/td\u003e\n        \u003ctd\u003e17 lbs total (11 lb bar + 6 lb driver)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSupply Conductors\u003c\/td\u003e\n        \u003ctd\u003eMin. 90°C rated\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eService Life\u003c\/td\u003e\n        \u003ctd\u003e50,000 hours\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCertifications\u003c\/td\u003e\n        \u003ctd\u003eETL Listed, DLC Horticultural; Photobiological Risk Group 1 (EN62471)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch4\u003eSpectrum Analysis\u003c\/h4\u003e\n\u003cdiv style=\"text-align: center; margin: 0;\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/TotalGrow_High_Intensity_Top-Light_620W_Bar_5.png?v=1791579750\" alt=\"TotalGrow High Intensity Top-Light 620W Bar LED Grow Light Spectrum Analysis\" style=\"width: 100%; max-width: 700px; height: auto; border-radius: 8px; display: block; margin: 0 auto;\"\u003e\n\u003c\/div\u003e\n\n\u003ch4\u003eSupport \u0026amp; Manuals\u003c\/h4\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 15px;\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/TotalGrow-HI-Top-320-620-Product-Specifications.pdf?v=1791579622\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"display: inline-flex; align-items: center; background-color: #f7f7f7; border: 1px solid #ddd; border-radius: 8px; padding: 12px 18px; text-decoration: none; color: #333; transition: background-color 0.3s ease, box-shadow 0.3s ease;\"\u003e\n\u003cspan style=\"font-size: 1.5em; margin-right: 12px;\"\u003e📄\u003c\/span\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eSpec Sheet\u003c\/span\u003e\n\u003c\/a\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/TotalGrow-HI-Top-320-620-Brochure.pdf?v=1791579623\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"display: inline-flex; align-items: center; background-color: #f7f7f7; border: 1px solid #ddd; border-radius: 8px; padding: 12px 18px; text-decoration: none; color: #333; transition: background-color 0.3s ease, box-shadow 0.3s ease;\"\u003e\n\u003cspan style=\"font-size: 1.5em; margin-right: 12px;\"\u003e📄\u003c\/span\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eBrochure\u003c\/span\u003e\n\u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch4\u003eWarranty\u003c\/h4\u003e\n\u003cp\u003eThe TotalGrow High Intensity Top-Light 620W Bar is covered by a 5-year limited manufacturer warranty from the original date of purchase.\u003c\/p\u003e\n\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cdiv class=\"faq-container\"\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhat's the difference between the 120V and 240V options?\u003c\/span\u003e\n\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eBoth options use the same fixture and universal 100–277VAC driver. The main practical difference is power sharing. On 120V, linking cords can connect up to 2 bars per AC feed. On 240V you can link up to 4, and current draw per fixture drops from 5.4A to about 2.7A.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eHow does the HI-Top 620 compare to the TotalGrow 660W bar?\u003c\/span\u003e\n\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe HI-Top 620 runs at 2.8 µmol\/J and puts out 1,734 µmol\/s from a 46\" × 3\" × 3\" bar with IP65 protection. The newer \u003ca href=\"\/products\/totalgrow-high-intensity-top-light-660w-bar-led-grow-light\" style=\"color:#2c5530;\"\u003eTotalGrow 660W Top-Light Bar\u003c\/a\u003e is shorter at 43\" × 3\" × 4\", with an IP66 rating. It comes in a standard version (1,685 µmol\/s at 2.5 µmol\/J) and a high-efficiency version (1,865 µmol\/s at 2.9 µmol\/J). Both share the same linking limits, 0-10V dimming and a 5-year warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eAre power cords included?\u003c\/span\u003e\n\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe DC cord that connects the light bar to the driver is included, along with mounting brackets for both. AC power cords, AC linking cords and M12 dimming\/data cords are sold separately, so you can order the plug type and lengths your layout needs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eHow high should I hang the HI-Top 620?\u003c\/span\u003e\n\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eIt depends on your target intensity. For high-light sole-source growing (around 1,000 µmol\/m²\/s), TotalGrow suggests about 3 ft above the canopy with 4 ft spacing. Supplemental greenhouse lighting typically mounts 5–15 ft up. Keep at least 1 ft between the fixture and the canopy, and at least 2 inches between the fixture and the ceiling for heat dissipation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWill it work with my lighting controller?\u003c\/span\u003e\n\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe HI-Top 620 accepts standard 0-10V dimming through its M12 data port, with a 0.5V dim-off threshold. It also supplies 12V auxiliary power (300 mA). Check your controller's 0-10V compatibility and maximum daisy-chain count before wiring, and do not exceed it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eCan it be used in humid greenhouses?\u003c\/span\u003e\n\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eYes. The light bar is IP65-rated and suitable for dry, damp and wet locations, and its fanless design has no moving parts to corrode. It should never be sprayed or washed, and nutrient solution must not build up on it, since that voids the warranty. Clean dust off with low-pressure compressed air only.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eDo I need an electrician to install it?\u003c\/span\u003e\n\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eTotalGrow recommends installation by a qualified licensed electrician, wired to the National Electrical Code and local codes with proper grounding. Keep ambient temperature below 104°F (40°C) during operation. The fixture is a Photobiological Risk Group 1 product, so avoid staring directly at the lit LEDs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eIs there a 480V version?\u003c\/span\u003e\n\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eYes. TotalGrow makes a separate HI-Top 620 HV model with a 200–480VAC driver, which can link up to 8 fixtures at 480V. This listing covers the standard 100–277V model. Contact us if your facility runs on 480V, or browse our \u003ca href=\"\/collections\/totalgrow\" style=\"color:#2c5530;\"\u003eTotalGrow lighting collection\u003c\/a\u003e for other fixtures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TotalGrow","offers":[{"title":"None","offer_id":52652892815576,"sku":null,"price":799.0,"currency_code":"USD","in_stock":true},{"title":"120V","offer_id":52652862669016,"sku":null,"price":829.0,"currency_code":"USD","in_stock":true},{"title":"240V","offer_id":52652862701784,"sku":null,"price":829.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/TotalGrow_High_Intensity_Top-Light_620W_Bar_1.png?v=1791579750","url":"https:\/\/trimleaf.com\/products\/totalgrow-hi-top-620w-led-top-light-bar","provider":"Trimleaf","version":"1.0","type":"link"}