GBN-3 Gate Bolt (Latched) for Non-Contact SwitchesIDEM GBN Gate Bolts when used with non contact switches provide interlocking of the guard but ensure that unintentional restart is prevented. A deliberate action of sliding (and/or pulling GBN-3) and re-latching the gate bolt handle is required.In conjunction with a Risk Assessment (ISO12100-1/ISO12100-2) they can be used to eliminate the risk of operators becoming accidentally trappedinside a gua..