Best practice: use of latched and unlatched switches

The choice of a latched or unlatched (momentary) switch to control a particular system or piece of equipment may have a direct impact on user safety.

Always consider the nature of the equipment under control when deciding which type of switch to use:

  • A latched switch may be appropriate when a continuously closed (or open) switch-state is unlikely to impact user or vessel safety.

    Note Remember that a physically latched switch cannot be overridden by other switches within the digital switching system.

  • Use an unlatched (momentary) switch for moving equipment that may present an entrapment hazard.