Skip to main content
Log in
Siemens 5SQ2260-0KA20 — 2-Pole MCB (DIN Rail)

Siemens SENTRON 5SQ2260-0KA20 MCB, 2P, B-Curve, 20A, 3kA

MPN5SQ2260-0KA20

Siemens SENTRON 5SQ T55 series, 5SQ2260-0KA20 miniature circuit breaker, 2-pole, B-curve, 20 A, 3 kA breaking capacity, 400 V AC/DC.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

5SQ2260-0KA20 — Identification
ParameterValue
Brand nameSENTRON
5SQ2260-0KA20 — Electrical
ParameterValue
Number of poles2
5SQ2260-0KA20 — Protection
ParameterValue
Tripping characteristic classB
Overvoltage category3
5SQ2260-0KA20 — Mechanical
ParameterValue
Installation depth55 mm
Protection degree (IP)IP20
5SQ2260-0KA20 — Other specifications
ParameterValue
Type of voltageAC/DC
Energy limiting class3
Number of width units2
Number of poles (Note)2P
Circuit-breaker (Design)5SQ
Current (at AC)20 A
Acc. to EN 60898 / rated value3 kA
Supply voltage (at AC)400 V
Supply voltage frequency50 Hz
Product function (neutral conductor switching)Yes

Product details

What this 20 A B-curve MCB does in a panel

Neutral conductor switching is integrated (both poles break line and neutral), so it serves as a fully isolated disconnect for single-phase sub-circuits. The 2-module width (2 width units) fits standard DIN-rail enclosures; installation depth is 55 mm. Overvoltage category 3 and energy limiting class 3 place it in the fixed-installation distribution board, not the final-equipment sub-panel.

The closest functional peer is the 5SQ2270-2YA04 — same 2-pole, 3 kA, 400 V AC/DC, same 55 mm depth and 2-module width. The deciding difference is the tripping curve: the 5SQ2260-0KA20 uses a B-curve, while the 5SQ2270-2YA04 uses a C-curve.

IP20 finger-safe terminals; no additional shrouding needed inside an enclosed distribution board. Snap-on DIN-rail mount, 2 module spaces. The neutral pole is switched internally — no separate neutral bar required downstream of this breaker.

Frequently asked questions

Will 5SQ2260-0KA20 drop into a panel specified around 5SQ2270-2YA04 without rewiring?

Physically yes — same 2-pole footprint, same 2-module width, same 55 mm depth, same DIN-rail mount. But the tripping curve differs: B-curve vs C-curve. Verify the load inrush before swapping; a C-curve circuit may need the higher magnetic trip threshold to avoid nuisance trips on startup.

MPN
5SQ2260-0KA20