{"product_id":"b40-40a-b-curve-30ma-a-type-rcbo-nb3leg","title":"40A B Curve 30mA A Type RCBO (NB3LEG-B40)","description":"\u003cp data-start=\"141\" data-end=\"575\"\u003eThe \u003cstrong data-start=\"145\" data-end=\"194\"\u003eChint NB3LEG‑B40 40A B Curve 30mA A Type RCBO\u003c\/strong\u003e combines critical electrical protection and compact design in one essential safety device. Designed for use in single-phase circuits, this RCBO protects your wiring and appliances by detecting both overloads and earth leakage faults. Built to meet BS EN safety standards, it reliably safeguards electrical installations in homes, workshops, offices, and light commercial settings.\u003c\/p\u003e\n\u003cp data-start=\"577\" data-end=\"1163\"\u003eEngineered for modern electrical systems, this RCBO integrates over-current protection and residual current detection into a single module that fits neatly on a standard DIN rail. With a \u003cstrong data-start=\"764\" data-end=\"790\"\u003eB Curve characteristic\u003c\/strong\u003e, it responds quickly to moderate surge currents without nuisance trips, making it suitable for general circuits such as lighting, sockets, and everyday appliances. Its \u003cstrong data-start=\"959\" data-end=\"996\"\u003eType A residual current detection\u003c\/strong\u003e senses both alternating and pulsating DC leakage, offering broader protection for circuits that include electronic loads such as LED drivers, appliances, or chargers.\u003c\/p\u003e\n\u003cp data-start=\"1165\" data-end=\"1589\"\u003eThe device has a \u003cstrong data-start=\"1182\" data-end=\"1210\"\u003erated current of 40 amps\u003c\/strong\u003e and a \u003cstrong data-start=\"1217\" data-end=\"1260\"\u003eresidual current trip threshold of 30mA\u003c\/strong\u003e, ideal for personal protection against electric shock and fire risk. The robust \u003cstrong data-start=\"1341\" data-end=\"1380\"\u003e6kA short-circuit breaking capacity\u003c\/strong\u003e ensures reliable disconnection during faults, helping prevent damage to equipment and wiring. Compact and lightweight, the RCBO mounts easily on a 35 mm DIN rail to make installation fast and straightforward.\u003c\/p\u003e\n\u003cp data-start=\"1591\" data-end=\"1905\"\u003eBuilt for durability and performance, this unit includes a clear contact position indicator that shows at a glance whether the circuit is closed or open. Whether you are upgrading existing protection or specifying new installations, the NB3LEG‑B40 is a dependable choice for enhanced circuit safety and compliance.\u003c\/p\u003e","brand":"CHINT","offers":[{"title":"Default Title","offer_id":49270444490989,"sku":"NB3LEG-B40","price":23.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/4861\/4125\/files\/NB3LEG-B40.jpg?v=1768912630","url":"https:\/\/callidustrade.co.uk\/products\/b40-40a-b-curve-30ma-a-type-rcbo-nb3leg","provider":"Callidus Trade B2B","version":"1.0","type":"link"}