{"id":4807,"date":"2026-10-23T10:32:36","date_gmt":"2026-10-23T02:32:36","guid":{"rendered":"https:\/\/cnkuangya.com\/?p=4807"},"modified":"2026-10-23T10:53:26","modified_gmt":"2026-10-23T02:53:26","slug":"1pn-vs-2p-rcbo","status":"publish","type":"post","link":"https:\/\/cnkuangya.com\/pt\/blog\/1pn-vs-2p-rcbo\/","title":{"rendered":"RCBO 1P+N vs 2P: Explica\u00e7\u00e3o da Comuta\u00e7\u00e3o do Neutro e Prote\u00e7\u00e3o de Polos"},"content":{"rendered":"

1P+N vs 2P RCBO:<\/strong> ambos os r\u00f3tulos aparecem em disjuntores de corrente residual com prote\u00e7\u00e3o contra sobrecorrente, mas eles n\u00e3o dizem, por si s\u00f3, se o neutro \u00e9 comutado ou se ambos os polos t\u00eam prote\u00e7\u00e3o contra sobrecorrente. O diagrama de circuito exato e a folha de dados decidem esses detalhes. Este guia explica o que verificar antes de especificar um RCBO para um quadro de distribui\u00e7\u00e3o monof\u00e1sico.<\/p>\n\n

A resposta curta<\/h2>\n

A 1P+N RCBO has one phase pole and a neutral path. Its phase conductor receives overcurrent protection; the neutral can be switched or unswitched depending on the model. ABB, for example, lists both neutral-switched and neutral-unswitched variants within its 1P+N DSE201 family. A 2P RCBO has two poles, but its protection and switching functions still need to be confirmed from the particular manufacturer’s schematic. Schneider Electric lists a 2P iC60H2 variant with two protected poles. These product examples demonstrate why a pole-count label alone is insufficient for procurement.<\/p>\n\n

\"Comparison
Verifique a comuta\u00e7\u00e3o do neutro separadamente do n\u00famero de polos protegidos contra sobrecorrente.<\/figcaption><\/figure>\n\n

Por que a comuta\u00e7\u00e3o do neutro \u00e9 importante<\/h2>\n

\u201cNeutral switched\u201d means that the device opens the neutral path as part of its switching action. It does n\u00e3o<\/em> mean the neutral has its own overcurrent trip element. This distinction affects isolation requirements, panel schedules, test procedures and the suitability of a device for a particular earthing arrangement. Some 1P+N units switch the neutral; others leave it solid. Therefore, never infer isolation performance from \u201c1P+N\u201d printed on a sales page.<\/p>\n

The RCBO’s residual-current function compares current in the conductors passing through its sensing arrangement. A mismatch can cause a trip. Overcurrent protection is a separate function, with its own rated current and breaking-capacity specifications. For the wider context, see our RCBO wiring diagram guide<\/a>.<\/p>\n\n

Comparison checklist for buyers<\/h2>\n
Pergunta<\/th>1P+N RCBO<\/th>2P RCBO<\/th><\/tr><\/thead>
How many poles\/paths?<\/td>One phase pole plus neutral path<\/td>Dois polos<\/td><\/tr>
Quais polos possuem prote\u00e7\u00e3o contra sobrecorrente?<\/td>Polo de fase; verificar o dispositivo exato<\/td>Verificar folha de dados; alguns modelos protegem ambos os polos<\/td><\/tr>
O neutro desliga?<\/td>Pode ser comutado ou n\u00e3o comutado<\/td>Verificar diagrama de fia\u00e7\u00e3o e designa\u00e7\u00e3o do polo<\/td><\/tr>
O r\u00f3tulo sozinho pode confirmar o isolamento?<\/td>N\u00e3o<\/td>N\u00e3o<\/td><\/tr>
Other ratings to verify<\/td>Voltage, current, residual-current sensitivity\/type, short-circuit capacity, certification and dimensions<\/td><\/tr><\/tbody><\/table><\/figure>\n\n

Kuangya model examples: VKL003\/VKL003N and VRL22<\/h2>\n

Published model specifications show why the pole label is only a starting point. The VKL003\/VKL003N product page<\/a> lists 1P+N versions rated 5\u201340 A, with VKL003 at AC 240 V and VKL003N at AC 120 V. The VRL22 product page<\/a> lists a 2P version rated 6\u201363 A at AC 240 V. Residual-current type and sensitivity options depend on the selected variant.<\/p>\n

These family-level specifications do not establish whether neutral is switched or whether both poles have overcurrent protection. Before specifying a unit, request the exact variant\u2019s terminal diagram, datasheet and applicable approval documents, then match them to the circuit and local requirements.<\/p>\n\n

How to choose the right RCBO<\/h2>\n
  1. Confirm the supply and circuit.<\/strong> Identify the line\/neutral arrangement, system voltage and relevant local wiring rules. Do not choose solely by physical width.<\/li>
  2. Request the internal circuit diagram.<\/strong> Ask whether neutral opens with the phase, which poles are overcurrent protected and where line and load terminals are located.<\/li>
  3. Match electrical ratings.<\/strong> Confirmar a corrente nominal, curva de disparo, sensibilidade \u00e0 corrente residual (por exemplo, 30 mA onde necess\u00e1rio), tipo de corrente residual e capacidade nominal de curto-circuito para a instala\u00e7\u00e3o.<\/li>
  4. Verificar a coordena\u00e7\u00e3o e a certifica\u00e7\u00e3o.<\/strong> Verificar a prote\u00e7\u00e3o a montante, o ambiente de instala\u00e7\u00e3o, as marcas de aprova\u00e7\u00e3o aplic\u00e1veis e a folha de dados mais recente espec\u00edfica do modelo. A IEC 61009-1 \u00e9 a norma de produto relevante para os RCBOs dentro do seu \u00e2mbito.<\/li>
  5. Rever as op\u00e7\u00f5es reais do produto.<\/strong> Comparar o nosso DR (Disjuntor Residual com Prote\u00e7\u00e3o contra Sobrecarga)<\/a> e RCBO VKL003 1P+N<\/a>, em seguida, solicitar o desenho exato para a sua variante selecionada.<\/li><\/ol>\n\n

    Erros comuns a evitar<\/h2>\n