对于某些产品，会有两种不同的电压/电流额定值，大家可能会感到困惑，尤其是当这些额定值在产品页面、发票、描述或丝印上的内容不一致时，可能会让人怀疑自己是否收到了正确的产品。
一个产品可能有两种或更多的认证的额定值，每种认证都有其自己的测试参数，这将导致不同的最大推荐额定值。有时产品页面会列出 30A，但收到的产品描述可能仅显示 16A。
以 Eaton 保险丝座 的 BK/S-8202-1-R 为例，客户可能会根据描述或其他资料认为他们订购的是 600V 30A 的产品，但实际收到的产品或描述上可能只显示 300V 16A，这两者都是正确的。
UL 认证 ：600V 30A
CSA 认证 ：300V 16A
- 需要注意的重要一点是，您的项目需要达到哪个认证的资格要求？
- 是否需要获得 UL 或 CSA 认证？
技术小贴士：这是一个示例，但这些不同的认证额定值可以适用于各种组件，例如开关和许多其他产品。查找事实的最佳来源是产品数据表或系列目录。请记住，这些文档可能会有修订或更新，因为零件或其测试资格可能会发生变化。
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