Siemens SENTRON 5TT5532-0CC — Overvoltage Undervoltage Fused Switch, 1P+N, 32 A
The Siemens SENTRON 5TT5532-0CC is an OUPA overvoltage undervoltage fused switch in a 1P+N configuration, rated at 32 A operational current on a 230 V AC supply. The 1P+N design means it switches the line conductor and provides neutral disconnection — critical for single-phase circuits where isolating both poles during a fault is required.
The 32 A current rating is the continuous thermal current (Ith) for the switch — it can carry 32 A indefinitely at 40 °C ambient without derating, making it suitable for sub-feed or final-circuit protection where the load current stays at or below that level. The 230 V AC operating voltage is the nominal line-to-neutral voltage for single-phase European-style grids; the switch is designed for that specific voltage and should not be applied at higher voltages without manufacturer confirmation. The single normally-open (NO) contact provides one make/break pole for the line; there are no auxiliary NC or CO contacts for status feedback, so any remote monitoring requires an external auxiliary contact block.
The 1P+N form factor means the neutral terminal is on the right side of the module; wire the incoming neutral to the N terminal and the outgoing neutral to the load-side N terminal. The line conductor connects to the L terminal. The switch provides overvoltage and undervoltage protection — it trips when the supply voltage deviates outside a preset window, protecting downstream equipment from brownouts and surges. No auxiliary contacts are built in; if remote trip indication is needed, add an external auxiliary switch module.