Skip to main content
Log in
Siemens 5SY4314-7KK11 — 3-Pole MCB (DIN Rail)

Siemens 5SY4314-7KK11 SENTRON MCB, 3P, 0.3A, C-Curve, 35kA

MPN5SY4314-7KK11

Siemens SENTRON 5SY4314-7KK11, miniature circuit breaker, 3-pole, 0.3 A, C characteristic, 35 kA IEC 60947-2, 10 kA EN 60898, 3 MW units, IP20.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

5SY4314-7KK11 — Identification
ParameterValue
Brand nameSENTRON
Number of poles3
Suitability for operationMechanical engineering / industry
5SY4314-7KK11 — Protection
ParameterValue
Tripping characteristic (curve)C
Breaking capacity per EN 6089810 kA
Breaking capacity per IEC 60947-235 kA
Overvoltage categoryIII
IP protection classIP20, with connected conductors
Energy limitation class3
Pollution degree3
5SY4314-7KK11 — Electrical
ParameterValue
Rated current (AC)0.3 A
Rated voltage (AC, multi-phase)440 V
5SY4314-7KK11 — Mechanical
ParameterValue
Modular width units3
Mounting positionany
Width54 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Terminal tightening torque, max.75 °C
Terminal tightening torque, min.-40 °C
Combined terminal, topYes
Combined terminal, bottomYes
Fastening methodQuick assembly system
SealableYes
5SY4314-7KK11 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of surrounding temperaturemax. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C

Product details

Installation depth is 70 mm. Mounting position any, so vertical or horizontal busbars are fine.

Thermal derating — the number that matters at panel temperature

Rated 0.3 A at 35 °C. At 40 °C it's 0.29 A; at 45 °C, 0.28 A; at 50 °C, 0.27 A; at 55 °C, 0.26 A; at 60 °C, 0.25 A. If the panel ambient sits at 50 °C, the breaker is good for 0.27 A continuous — not the 0.3 A on the label. That derating curve is the spec that trips people up when the breaker holds at bench temperature but nuisance-trips in a hot cabinet.

Frequently asked questions

What is the breaking capacity of 5SY4314-7KK11?

10 kA per EN 60898 and 35 kA per IEC 60947-2. The 35 kA figure is the one to use for industrial panel coordination studies.

Where can I buy 5SY4314-7KK11?

Sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time figure is published here.

Will 5SY4314-7KK11 drop into a panel specified around 5SY4140-7 without rewiring?

Both are SENTRON 3-pole MCBs in the same 3-MW DIN-rail footprint, so the mechanical fit is the same. The difference is the current rating — 5SY4314-7KK11 is 0.3 A; the 5SY4140-7 is a higher-rated variant. Verify the load current before swapping; the busbar and terminal positions are identical.

MPN
5SY4314-7KK11