The Siemens SENTRON 5SQ3270-1BA50 is a 2-pole miniature circuit breaker (MCB) in a 1P+N configuration — it switches both the line and the neutral, with overcurrent protection on the phase only. Breaking capacity is 3 kA at 240 V AC, certified per EN 60898. The C-curve means magnetic trip occurs at 5 to 10 times rated current (250 to 500 A), so it holds through motor inrush and capacitive loads without nuisance tripping.
Siemens SENTRON 5SQ3270-1BA50 MCB, 2-pole, C-curve, 50 A, 24
MPN5SQ3270-1BA50
Siemens SENTRON 5SQ series, 5SQ3270-1BA50, miniature circuit breaker, 2-pole 1P+N, C-curve, 50 A, 240 V AC, 3 kA per EN 60898, IP20, 55 mm depth.
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 |
|---|---|
| Brand name | SENTRON |
| Number of poles | 2 |
| 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 | 2 |
| Number of poles (Note) | 1P+N |
| Circuit-breaker (Design) | 5SQ |
| Current (at AC) | 50 A |
| Supply voltage (at AC) | 240 V |
| Supply voltage frequency | 50 Hz |
| Product function (neutral conductor switching) | Yes |
Product details
Frequently asked questions
What is the breaking capacity of 5SQ3270-1BA50?
3 kA at 240 V AC, certified per EN 60898.
Where can I buy 5SQ3270-1BA50 and what is the price?
Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
Does 5SQ3270-1BA50 switch the neutral?
Yes — it is a 1P+N configuration that switches both line and neutral, with overcurrent protection on the phase only.
MPN
5SQ3270-1BA50