Siemens SENTRON 5SQ2370-0KA40, miniature circuit breaker, 3-pole, C tripping characteristic, 40 A rated current, 3 kA breaking capacity per EN 60898 at 400 V AC, 50 Hz, IP20, 3 modular width units.
| Parameter | Value |
|---|---|
| Overvoltage category | 3 |
| Parameter | Value |
|---|---|
| Poles | 3 |
| Type of voltage | AC/DC |
| Installation depth | 55 mm |
| Degree of pollution | 3 |
| Protection class IP | IP20 |
| Design of the product | Miniature circuit breaker 5SQ |
| Number of poles (Note) | 3P |
| Energy limitation class | 3 |
| Number of modular width units | 3 |
| Tripping characteristic class | C |
| Acc. to EN 60898 / rated value | 3 kA |
| Supply voltage (at AC) | 400 V |
| Supply voltage frequency | 50 Hz |
| Operational current (at AC) | 40 A |
| Product function (Neutral conductor switching) | No |
The Siemens SENTRON 5SQ2370-0KA40 is a 3-pole miniature circuit breaker (MCB) in the 5SQ design, carrying a C tripping characteristic and rated 40 A at 400 V AC, 50 Hz. The 55 mm installation depth keeps it compatible with shallow gland plates and compact enclosures.
Snap-on DIN-rail mount, 3 module widths at 18 mm each. No neutral pole switching — the 3-pole unit breaks only the phase conductors, so a separate neutral bar is required in the enclosure.
The 5SQ2370-0KA40 has a 3 kA breaking capacity per EN 60898 at 400 V AC. That means it safely interrupts short-circuit faults up to 3 kA at the rated voltage.
The 5SQ2370-0KA40 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer.
The closest functional peer within the same SENTRON 5SQ family is the 5SQ2370-2YA05 — identical 3-pole, C-curve, 3 kA, 400 V AC rating, but at 0.5 A instead of 40 A. It shares the same form factor, DIN-rail footprint, and pollution/overvoltage ratings, so it drops into the same panel without rewiring — only the current rating differs for the branch circuit being protected.
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