{"product_id":"sma-backup-box-4p-63a-bu-stph-4p63b","title":"SMA Backup Box (4-pole, 63A) - BU-STPH-4P63B","description":"\u003cstyle\u003e\n@import url('https:\/\/fonts.googleapis.com\/css2?family=DM+Sans:wght@400;500;600;700\u0026display=swap');\n.sv-product{font-family:'DM Sans',sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6}\n.sv-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:28px}\n@media(max-width:600px){.sv-stats{grid-template-columns:repeat(2,1fr)}}\n.sv-stat{background:#0c0c0c;border-radius:12px;padding:20px 16px;text-align:center}\n.sv-stat-val{font-size:28px;font-weight:700;color:#fff;line-height:1.1}\n.sv-stat-val span{font-size:16px;font-weight:400;color:rgba(255,255,255,0.5)}\n.sv-stat-label{font-size:12px;color:rgba(255,255,255,0.4);margin-top:6px}\n.sv-section{margin-bottom:28px}\n.sv-section-title{font-size:18px;font-weight:700;color:#0c0c0c;margin:0 0 16px;padding-left:14px;border-left:3px solid 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18px;line-height:1.7}\n\u003c\/style\u003e\n\u003cdiv class=\"sv-product\"\u003e\n\n\u003cdiv class=\"sv-stats\"\u003e\n\n\u003cdiv class=\"sv-stat\"\u003e\n\n\u003cdiv class=\"sv-stat-val\"\u003eBackup power \u003cspan\u003e3~\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-stat-label\"\u003eBackup power switching\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-stat\"\u003e\n\n\u003cdiv class=\"sv-stat-val\"\u003e63 \u003cspan\u003eA\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-stat-label\"\u003eRated current per phase\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-stat\"\u003e\n\n\u003cdiv class=\"sv-stat-val\"\u003e4 \u003cspan\u003epole\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-stat-label\"\u003eTransfer contacts\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-stat\"\u003e\n\n\u003cdiv class=\"sv-stat-val\"\u003eIP \u003cspan\u003esuitable\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-stat-label\"\u003eWall mounting\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-section\"\u003e\n\n\u003ch3 class=\"sv-section-title\"\u003eAdvantages at a glance\u003c\/h3\u003e\n\n\u003cdiv class=\"sv-features\"\u003e\n\n\u003cdiv class=\"sv-feature\"\u003e\n\n\u003cdiv class=\"sv-feature-icon\"\u003e🔌\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003ch4\u003eAutomatic backup power supply\u003c\/h4\u003e\n\n\u003cp\u003eIn the event of a power outage, the SMA Backup Box automatically switches the household distribution to the inverter, continuing to supply power to consumers.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-feature\"\u003e\n\n\u003cdiv class=\"sv-feature-icon\"\u003e⚡\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003ch4\u003e63 A per phase\u003c\/h4\u003e\n\n\u003cp\u003e4-pole transfer mechanism with 63 A rated current per phase for three-phase backup power supply in single and multi-family homes.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-feature\"\u003e\n\n\u003cdiv class=\"sv-feature-icon\"\u003e🏠\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003ch4\u003eSwitching of the entire house grid\u003c\/h4\u003e\n\n\u003cp\u003eFour poles safely switch all three live conductors and the neutral conductor between the public grid and island operation.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-feature\"\u003e\n\n\u003cdiv class=\"sv-feature-icon\"\u003e🛡️\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003ch4\u003eSafe grid disconnection\u003c\/h4\u003e\n\n\u003cp\u003eClear galvanic isolation from the public grid in backup power mode protects the system and service personnel.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-feature\"\u003e\n\n\u003cdiv class=\"sv-feature-icon\"\u003e🔧\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003ch4\u003eCompact wall-mounted device\u003c\/h4\u003e\n\n\u003cp\u003ePre-assembled box for easy wall mounting in the house connection room – quick integration without complex control cabinet construction.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-feature\"\u003e\n\n\u003cdiv class=\"sv-feature-icon\"\u003e🇩🇪\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003ch4\u003eQuality from SMA\u003c\/h4\u003e\n\n\u003cp\u003eSystem component from the established inverter manufacturer SMA with many years of experience in backup power solutions.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-section\"\u003e\n\n\u003ch3 class=\"sv-section-title\"\u003eTechnical data\u003c\/h3\u003e\n\n\u003cdiv class=\"sv-table-wrap\"\u003e\u003ctable class=\"sv-table\"\u003e\n\n\u003cthead\u003e\u003ctr\u003e\n\n\u003cth\u003eParameter\u003c\/th\u003e\n\n\u003cth\u003eValue\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\n\u003ctd\u003eSMA\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\n\u003ctd\u003eBackup Box (Backup Power Transfer Box)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eVersion\u003c\/td\u003e\n\n\u003ctd\u003e4-pole\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eRated current\u003c\/td\u003e\n\n\u003ctd\u003e63 A per phase\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003ePhases\u003c\/td\u003e\n\n\u003ctd\u003eThree-phase (3~)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eMounting\u003c\/td\u003e\n\n\u003ctd\u003eWall mounting\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eManufacturer part number\u003c\/td\u003e\n\n\u003ctd\u003eBU-STPH-4P63B\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sv-seo sv-faq\"\u003e\n\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\n\u003cdetails class=\"sv-faq-item\"\u003e\u003csummary\u003eWhat is the SMA Backup Box (4P, 63A)?\u003c\/summary\u003e\u003cp\u003eThe SMA Backup Box is an automatic transfer unit for backup power supply. In the event of a public grid failure, it disconnects the household distribution from the grid and switches to the inverter, so that connected consumers continue to be supplied with power. The 4P\/63A version switches four-pole with 63 A rated current per phase.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"sv-faq-item\"\u003e\u003csummary\u003eWhich systems is the Backup Box suitable for?\u003c\/summary\u003e\u003cp\u003eThe box is designed for three-phase backup power solutions in single and multi-family homes. With 63 A per phase, it covers typical household connections and enables continued supply to the house grid via the compatible SMA inverter in the event of a power outage.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"sv-faq-item\"\u003e\u003csummary\u003eHow does the switching work in the event of a power outage?\u003c\/summary\u003e\u003cp\u003eIf the public grid fails, the 4-pole box disconnects all three live conductors and the neutral conductor from the grid, establishing galvanic isolation. The inverter then builds its own island grid. When the grid returns, it automatically switches back.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"sv-faq-item\"\u003e\u003csummary\u003eDoes the Backup Box have to be installed by a specialist company?\u003c\/summary\u003e\u003cp\u003eYes. As a component of the house distribution, the box is integrated into the meter area or the sub-distribution and must be installed and connected by a licensed electrician in accordance with applicable regulations.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"sv-faq-item\"\u003e\u003csummary\u003eWho is SMA?\u003c\/summary\u003e\u003cp\u003eSMA is an established manufacturer of inverters and system solutions for photovoltaics. In addition to inverters, the company also offers accessories such as backup power transfer boxes for a reliable emergency power supply.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"sv-faq-item\"\u003e\u003csummary\u003eWhere can I buy the SMA Backup Box in Austria?\u003c\/summary\u003e\u003cp\u003eThe SMA Backup Box (4P, 63A) is available from SOLARVIC and can be ordered directly online via solarvic.at. The SOLARVIC team will be happy to advise you on design questions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"sv-faq-item\"\u003e\u003csummary\u003eHow can I order?\u003c\/summary\u003e\u003cp\u003eDirectly online via solarvic.at – the SOLARVIC team will be happy to assist with any design questions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Was ist die SMA Backup Box (4P, 63A)?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Die SMA Backup Box ist eine automatische Umschalteinheit für die Ersatzstromversorgung. Sie trennt bei einem Ausfall des öffentlichen Netzes die Hausverteilung vom Netz und schaltet auf den Wechselrichter um, sodass angeschlossene Verbraucher weiter mit Strom versorgt werden. Die Variante 4P\/63A schaltet vierpolig mit 63 A Nennstrom je Phase.\"}},{\"@type\":\"Question\",\"name\":\"Für welche Anlagen eignet sich die Backup Box?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Die Box ist für dreiphasige Ersatzstromlösungen im Ein- und Mehrfamilienhaus ausgelegt. Mit 63 A pro Phase deckt sie den typischen Hausanschluss ab und ermöglicht bei Netzausfall die Weiterversorgung des Hausnetzes über den kompatiblen SMA-Wechselrichter.\"}},{\"@type\":\"Question\",\"name\":\"Wie funktioniert die Umschaltung bei einem Stromausfall?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Fällt das öffentliche Netz aus, trennt die 4-polige Box alle drei Außenleiter und den Neutralleiter vom Netz und stellt eine galvanische Trennung her. Der Wechselrichter baut anschließend ein eigenes Inselnetz auf. Kehrt das Netz zurück, wird automatisch zurückgeschaltet.\"}},{\"@type\":\"Question\",\"name\":\"Muss die Backup Box von einem Fachbetrieb installiert werden?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Ja. Als Bestandteil der Hausverteilung wird die Box in den Zählerbereich bzw. die Unterverteilung eingebunden und muss von einer konzessionierten Elektrofachkraft nach den geltenden Vorschriften installiert und angeschlossen werden.\"}},{\"@type\":\"Question\",\"name\":\"Wer ist SMA?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"SMA ist ein etablierter Hersteller von Wechselrichtern und Systemlösungen für die Photovoltaik. Das Unternehmen bietet neben Wechselrichtern auch Zubehör wie Ersatzstrom-Umschaltboxen für eine zuverlässige Notstromversorgung an.\"}},{\"@type\":\"Question\",\"name\":\"Wo kann ich die SMA Backup Box in Österreich kaufen?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Die SMA Backup Box (4P, 63A) ist bei SOLARVIC erhältlich und kann direkt online über solarvic.at bestellt werden. Bei Fragen zur Auslegung berät das SOLARVIC-Team gerne.\"}},{\"@type\":\"Question\",\"name\":\"Wie kann ich bestellen?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Direkt online über solarvic.at – bei Fragen zur Auslegung hilft das SOLARVIC-Team gerne weiter.\"}}]}\u003c\/script\u003e","brand":"SMA","offers":[{"title":"Default Title","offer_id":58131233734987,"sku":"BU-STPH-4P63B","price":863.12,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/5075\/6427\/files\/0164748_4_6_0_e_460e089a755261405e98de7a6b56c815adc452d6_det_iva_sma_backup_box_bu_stph_xp63b_png.png?v=1786949174","url":"https:\/\/solarvic.at\/en\/products\/sma-backup-box-4p-63a-bu-stph-4p63b","provider":"SOLARVIC | Photovoltaik \u0026 Haustechnik","version":"1.0","type":"link"}