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Siemens 5SY4115-7KK11 — 1-Pole MCB (DIN Rail)

Siemens 5SY4115-7KK11 SENTRON MCB, 1 Pole, C-Curve, 1.6 A, 1

MPN5SY4115-7KK11

Siemens SENTRON miniature circuit breaker, 1-pole, C-curve, 1.6 A, breaking capacity 10 kA (EN 60898) / 35 kA (IEC 60947-2), 18 mm width, IP20, -40 to 75 °C, for railway applications.

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

Specifications

5SY4115-7KK11 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles1
Application suitabilityMechanical engineering / industry
5SY4115-7KK11 — Electrical & Protection
ParameterValue
Tripping characteristic classC
Rated value (EN 60898)10 kA
Energy limitation class3
Overvoltage categoryIII
5SY4115-7KK11 — Mounting & Connection
ParameterValue
Mounting positionany
Fastening methodQuick assembly system
Combined terminal, topYes
Combined terminal, bottomYes
Width18 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Modular width units1
Torque, min.-40 °C
Torque, max.75 °C
SealableYes
5SY4115-7KK11 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Pollution degree3
Halogen-freeYes
Silicone-freeYes

Product details

It carries a 10 kA breaking capacity under EN 60898 and a 35 kA rating under IEC 60947-2, which means it can safely interrupt fault currents up to those levels without welding or cascading failure upstream — the 35 kA figure is the one that matters for industrial panel coordination with high available fault current. This breaker is explicitly listed for railway applications and mechanical engineering/industry operation, so it's built for the vibration, temperature swings, and dirt you find in traction power or factory-floor distribution. The 1-module-wide (18 mm) footprint fits standard DIN-rail enclosures, and the quick-assembly fastening method speeds up rail mounting.

Temperature derating and real-world current

The 1.6 A rating is at 35 °C ambient. At 40 °C it derates to 1.52 A, at 50 °C to 1.44 A, and at 60 °C to 1.36 A (–).

Panel fit and mounting details

Width is 18 mm (1 modular unit), depth 76 mm, height 90 mm. Installation depth is 70 mm, which matters when routing conductors behind the DIN rail. The enclosure is sealable for tamper-proofing after commissioning. Touch protection is built in.

Frequently asked questions

Where can I buy 5SY4115-7KK11 and get a price?

This part is sourced and quoted to order through our independent distribution network. Submit an RFQ for current availability and pricing — no stock count or price is published here, but we confirm both at quote time.

What is the breaking capacity of 5SY4115-7KK11?

It carries 10 kA per EN 60898 and 35 kA per IEC 60947-2. For industrial panels with high available fault current, the 35 kA figure governs coordination.

Will 5SY4115-7KK11 drop into a panel specified for 5SY4115-7CV?

Both are 1-pole, 18 mm wide SENTRON MCBs with C-curve and the same breaking capacities. The 5SY4115-7KK11 is the railway-rated variant; the 5SY4115-7CV is the standard industrial version. They share the same footprint and terminal layout, so no rewiring is needed for a swap.

MPN
5SY4115-7KK11