The Siemens 5SP3732-2 is a 1-pole main conductor circuit-breaker (SHU) rated 32 A at 230/400 V, preassembled on a SHU adapter 5ST1326.
Fit & Integration
The SHU adapter 5ST1326 is the mounting base that carries the breaker — the assembly clips onto a DIN rail in a Siemens SHU distribution board. The 1-pole format protects a single phase; the 32 A rating covers typical lighting or socket-outlet circuits within the 230/400 V system.
