The SENTRON 5SQ2170-2YA20 is a 1-pole miniature circuit breaker (MCB) with a C-curve tripping characteristic rated 20 A at 240 V AC, per EN 60898. The 3 kA breaking capacity (per EN 60898) is the maximum prospective fault current it can safely interrupt at rated voltage; for a 240 V single-phase branch circuit this is adequate for most residential and light commercial panels, but verify the available fault current at the installation point — if it exceeds 3 kA, this breaker is not the correct fit.
SENTRON 5SQ2170-2YA20 Miniature Circuit Breaker, 1P, C 20 A,
MPN5SQ2170-2YA20
SENTRON 5SQ miniature circuit breaker, 1-pole, C 20 A, 3 kA per EN 60898, 240 V AC/DC, IP20, 55 mm depth, 1 width unit.
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Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Brand name | SENTRON |
| Number of poles | 1 |
| Parameter | Value |
|---|---|
| Tripping characteristic class | C |
| Rated value (EN 60898) | 3 kA |
| Overvoltage category | 3 |
| Parameter | Value |
|---|---|
| Installation depth | 55 mm |
| Parameter | Value |
|---|---|
| IP protection class | IP20 |
| Parameter | Value |
|---|---|
| Type of voltage | AC/DC |
| Energy limiting class | 3 |
| Number of width units | 1 |
| Number of poles (Note) | 1P |
| Circuit-breaker (Design) | 5SQ |
| Current (at AC) | 20 A |
| Supply voltage (at AC) | 240 V |
| Supply voltage frequency | 50 Hz |
| Product function (neutral conductor switching) | No |
Product details
Frequently asked questions
What is the number of poles on 5SQ2170-2YA20?
It is a 1-pole (1P) miniature circuit breaker, switching only the line conductor — neutral is not switched.
Will 5SQ2170-2YA20 drop into a panel specified around 5SQ2370-2YA04?
No — the 5SQ2370-2YA04 is a 3-pole breaker occupying 3 width units and switching three phases. The 5SQ2170-2YA20 is a 1-pole unit for single-phase branch circuits. Rewiring and a different DIN-rail allocation are required.
MPN
5SQ2170-2YA20