What this 4-pole MCB brings to the panel
The Siemens 5SY7610-7 is a 4-pole (3P+N) SENTRON miniature circuit breaker with a C-curve trip characteristic, meaning it's built for moderate inrush loads like motor starters and small transformers where the magnetic trip kicks in at 5–10× rated current. The neutral pole is switched, so you get full isolation on all four poles in a single 4-module-width package — no separate neutral link needed. Breaking capacity is dual-rated: 15 kA per EN 60898-1 and 30 kA per IEC 60947-2, with a DC rating of 15 kA at 60 V per IEC 60947-2 and 5 kA per UL 1077 / CSA C22.2 No.235. DC side is rated at 60 V, max 72 V. Frequency is 50/60 Hz.
Standards and compliance — what the approvals mean
This breaker carries triple certification: IEC / EN 60898-1 (the residential and light-commercial standard for MCBs), IEC / EN 60947-2 (the industrial standard for circuit breakers), and UL 1077 (the supplementary protector standard for North America). That means it's accepted in European, UK, and North American panels — one part number covers multiple regulatory jurisdictions. Halogen-free and silicon-free construction reduces toxic smoke and corrosive byproducts in a fault event — relevant for panels in occupied spaces or sensitive electronics areas. The sealable option lets you lock the toggle position to prevent unauthorized reset after a trip.
Mounting and integration — DIN-rail fit
That 72 mm width equals 4 modular units — a standard 4-pole MCB footprint that drops into any 35 mm DIN-rail panel without surprises. IP20 protection with connected conductors — standard for inside the enclosure; no special sealing required. Combined terminals on both top and bottom accept supply from either end, so you can bus the line side without reconfiguring the breaker.