Sentrol Industrial GuardSwitch Series 300 Safety Interlock Switch, models 391-BT and 393-BT DPST (double pole single throw) are designed for use with safety monitored relays or monitored circuits. To achieve the optimum defeat resistance features of the Sentrol switch, both the switch circuit and the tamper circuit must be connected. An optional hird circuit can be provided to indicate at the panel which guard is open. This seamless stainless steel highly defeat resistant Sentrol safety switch is ideal for corrosive, machine oil, and extreme wash-down environments such as food and meat processing.

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