The 5SQ2370-2YA20 is a Siemens SENTRON 5SQ miniature circuit breaker—3-pole, C-curve, rated 20 A at 400 V AC, with a 3 kA breaking capacity to EN 60898. The 55 mm installation depth and 3 width units (17.5 mm per unit) mean it fits standard distribution boards without crowding the gland plate.
Siemens SENTRON 5SQ2370-2YA20 MCB, 3-pole C 20 A, 3 kA
MPN5SQ2370-2YA20
Siemens SENTRON 5SQ, miniature circuit breaker, 3-pole, C 20 A, 400 V AC, 3 kA acc. to EN 60898, 55 mm depth, IP20.
Source DocumentedChannel stated on listing & quote
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| 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 |
| Energy limiting class | 3 |
| Number of width units | 3 |
| Number of poles (Note) | 3P |
| Circuit-breaker (Design) | 5SQ |
| Current (at AC) | 20 A |
| Tripping characteristic class | C |
| Acc. to EN 60898 / rated value | 3 kA |
| Supply voltage (at AC) | 400 V |
| Supply voltage frequency | 50 Hz |
| Product function (neutral conductor switching) | No |
Product details
Frequently asked questions
Where can I buy 5SQ2370-2YA20 and get a price?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at the time of quotation—submit an RFQ for a firm quote.
Will 5SQ2370-2YA20 drop into a panel specified around 5SQ2370-2YA04?
Yes—both are 3-pole, C-curve, 55 mm depth, 3 width units, same SENTRON 5SQ family. The only difference is the current rating: 20 A vs 4 A. No rewiring or panel modification needed; just swap the MCB.
MPN
5SQ2370-2YA20