{"product_id":"pcs28-12d-240a-40r-dual-solid-state-relay","title":"PCS28-12D-240A-40R Dual Solid State Relay","description":"\u003cstyle\u003e\n  @import url('https:\/\/fonts.googleapis.com\/css2?family=DM+Sans:wght@400;500;600;700\u0026display=swap');\n  .nzn-desc .tagline{font-family:'DM Sans',sans-serif;font-size:17px;line-height:1.7;color:#333;border-left:3px solid #e07e2c;padding-left:16px;margin-bottom:32px}\n  .nzn-desc .section-title{font-family:'DM Sans',sans-serif;font-size:15px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#e07e2c;margin-bottom:14px}\n  .nzn-desc .specs-table{width:100%;border-collapse:collapse;margin-bottom:32px;font-family:'DM Sans',sans-serif;font-size:14px}\n  .nzn-desc .specs-table tr{border-bottom:1px solid #ebebeb}\n  .nzn-desc .specs-table tr:last-child{border-bottom:none}\n  .nzn-desc .specs-table td{padding:10px 8px}\n  .nzn-desc .specs-table td:first-child{color:#888;width:42%;font-size:14px}\n  .nzn-desc .specs-table td:last-child{font-weight:600;color:#1a1a1a}\n  .nzn-desc .uses-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:32px}\n  .nzn-desc .use-item{background:#f7f7f7;border-left:3px solid #e07e2c;padding:12px 14px;font-family:'DM Sans',sans-serif;font-size:13.5px;line-height:1.5;color:#2a2a2a}\n  .nzn-desc .note{background:#fafafa;border:1px solid #e8e8e8;border-radius:4px;padding:14px 16px;font-family:'DM Sans',sans-serif;font-size:13px;color:#888;line-height:1.6}\n  .nzn-desc .note strong{color:#555}\n  .nzn-desc .setup-box{background:#f0f7ff;border-left:3px solid #4a90d9;padding:14px 16px;font-family:'DM Sans',sans-serif;font-size:13px;color:#2c4a6e;line-height:1.7;margin-bottom:32px;border-radius:0 4px 4px 0}\n  .nzn-desc .faq-item{margin-bottom:12px}\n  .nzn-desc .faq-q{font-family:'DM Sans',sans-serif;font-size:13.5px;font-weight:700;color:#1a1a1a;margin-bottom:3px}\n  .nzn-desc .faq-a{font-family:'DM Sans',sans-serif;font-size:13.5px;color:#555;line-height:1.5;padding-left:14px;border-left:2px solid #e07e2c}\n  .nzn-desc hr.divider{border:none;border-top:1px solid #ebebeb;margin:28px 0}\n\u003c\/style\u003e\n\u003cdiv class=\"nzn-desc\" style=\"max-width:1200px;margin:0 auto;\"\u003e\n  \u003cp class=\"tagline\"\u003eThe PCS28-12D-240A-40R is a dual-channel solid state relay (SSR) from CIT Relay \u0026amp; Switch — designed for reliable, silent AC load switching in industrial, automation, and electronics applications. No moving parts means no mechanical wear, no contact bounce, and a far longer service life than electromechanical relays.\u003c\/p\u003e\n  \u003chr class=\"divider\"\u003e\n  \u003cp class=\"section-title\"\u003eSpecifications\u003c\/p\u003e\n  \u003ctable class=\"specs-table\"\u003e\n    \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003ePCS28-12D-240A-40R\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eDual Solid State Relay (SSR)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e2 (independent)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eControl Input Voltage\u003c\/td\u003e\n\u003ctd\u003e12V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLoad Voltage\u003c\/td\u003e\n\u003ctd\u003e240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResistance\u003c\/td\u003e\n\u003ctd\u003e40Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003ePCB \/ panel mount\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eCIT Relay \u0026amp; Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n  \u003cdiv class=\"setup-box\"\u003e\n    \u003cstrong\u003eSolid state vs mechanical relay:\u003c\/strong\u003e Solid state relays use semiconductor switching (no moving contacts), resulting in silent operation, faster switching speeds, no contact arcing, and a significantly longer lifespan. The tradeoff is a small voltage drop across the output and the need for heat management at higher currents.\n  \u003c\/div\u003e\n  \u003chr class=\"divider\"\u003e\n  \u003cp class=\"section-title\"\u003eCommon Uses\u003c\/p\u003e\n  \u003cdiv class=\"uses-grid\"\u003e\n    \u003cdiv class=\"use-item\"\u003eIndustrial automation \u0026amp; process control\u003c\/div\u003e\n    \u003cdiv class=\"use-item\"\u003eHVAC \u0026amp; temperature control systems\u003c\/div\u003e\n    \u003cdiv class=\"use-item\"\u003eArduino \u0026amp; PLC-controlled AC load switching\u003c\/div\u003e\n    \u003cdiv class=\"use-item\"\u003eMotor \u0026amp; pump control circuits\u003c\/div\u003e\n    \u003cdiv class=\"use-item\"\u003eLighting control systems\u003c\/div\u003e\n    \u003cdiv class=\"use-item\"\u003eDual-channel switching from a single component\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003chr class=\"divider\"\u003e\n  \u003cp class=\"section-title\"\u003eCommon Questions\u003c\/p\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eCan I control this with an Arduino or Raspberry Pi?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eYes — the 12V DC control input is compatible with microcontrollers and PLCs. If driving from a 3.3V or 5V GPIO pin directly, you'll need a transistor or driver circuit to provide the 12V switching signal. Alternatively, use a 12V relay driver module between the microcontroller and this SSR.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eDo I need a heatsink?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eAt low currents the relay runs cool, but under sustained or high load the semiconductor junction generates heat. For continuous duty at higher loads, mounting on a heatsink or providing adequate airflow is strongly recommended to prevent thermal shutdown or damage.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003chr class=\"divider\"\u003e\n  \u003cp class=\"note\"\u003e\u003cstrong\u003e⚠️ Mains voltage warning:\u003c\/strong\u003e This relay switches 240V AC mains voltage. All mains wiring must be performed by a qualified electrician in accordance with local electrical regulations. \u003cstrong\u003eDatasheet:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.citrelay.com\/wp-content\/uploads\/2025\/05\/PCS28.pdf\" target=\"_blank\"\u003eDownload PCS28 Series PDF (CIT Relay \u0026amp; Switch)\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"CIT Relay \u0026 Switch","offers":[{"title":"Default Title","offer_id":42670401552480,"sku":"SSR-PCS28-12D-240A","price":55.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/IMG_3584.jpg?v=1774934385","url":"https:\/\/www.nznelectronics.co.nz\/products\/pcs28-12d-240a-40r-dual-solid-state-relay","provider":"NZN Electronics","version":"1.0","type":"link"}