描述：SIRIUS 3TK28 27/28 Safety Relays with Timed Delay The SIRIUS 3TK28 27/28 Safety Relays with Timed Delay provide the functionality of time delayed contacts within a 45mm housing. The time delay is adjustable for each unit. Two different types offer a time delay from 0.05s up to 3s or 0.5s up to 30s. While standard safety contacts in these units are certified up to Category 4, time delayed outputs only reach a Category 3 level according to EN954-1. Standard relay enable circuits (positively driven) Suitable for use with Expansion module 3TK28 30 Single/two-channel sensor connection Width 45mm ### 标准 EN 60204-1, EN 92, EN 954-1. ### 安全继电器
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