The Siemens 5SY7602-7 is a SENTRON 4-pole miniature circuit breaker wired as 3P+N, meaning it switches three phases and the neutral conductor together. That neutral switching is the key difference from a standard 3-pole unit — you get full isolation on TN-S or TN-C-S systems without a separate disconnect. The UL 1077 / CSA listing at 5 kA confirms it is accepted as a supplementary protector in North American panels — not a branch-circuit rated device under UL 489, so verify the application if you are specifying for a US service entrance. Rated AC operating voltage is 400 V, with a maximum of 440 V in single- or multi-phase operation. DC rating is 60 V per pole, maximum 72 V, with a DC breaking capacity of 15 kA per IEC 60947-2. That DC capability is unusual for a DIN-rail MCB of this width — useful if you are protecting a DC bus or battery string in the same enclosure.
Occupies 4 modular width units on standard DIN rail. Width is 72 mm, height 90 mm. IP20 with connected conductors is the standard protected-inside-the-panel rating; no special gasketing for washdown zones. The sealable cover lets you lock the toggle position after commissioning, which satisfies some machine-safety isolation requirements without a separate lockout hasp.
Humidity influence is specified per: max 95% RH at 55 °C, derating to 35% RH at 75 °C. Halogen-free and silicon-free construction avoids corrosive off-gassing in sealed cabinets with sensitive electronics. Standards compliance covers IEC / EN 60898-1, IEC / EN 60947-2, and UL 1077. Energy limitation class 3 means the let-through energy is low enough to protect downstream components under short-circuit conditions. Lifecycle stage is current production. This is not a phase-out or NRND line — the 5SY7 series remains the standard SENTRON MCB for 4-pole applications.