Load feeders. Selectively protected by SITOP select Automation components are normally supplied with 24-volt direct current. With the SITOP select electronic diagnostic module, each 24 V load is monitored for overload and short-circuit and is shut down when a fault occurs. One diagnostic module monitors as many as 4 load feeders, which can be brought onto load sequentially at prescribed times to off-load the power supply. Advantages of SITOP select for maintenance Reduction in downtimes Fast fault detection and targeted fault recovery Cause of fault precisely identifiable: briefly high switch-on currents, overload or short-circuit Analysis of the SITOP select message by the higher-level automation system Local problem feeder immediately detectable thanks to LED status display