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Siemens 5SY4110-8CV — 1-Pole MCB (DIN Rail)

5SY4110-8CV Siemens MCB, 1P D 10 A, 15 kA IEC 60947-2

MPN5SY4110-8CV

Siemens 5SY4110-8CV miniature circuit breaker, 1-pole, D tripping characteristic, 10 A rated, 15 kA breaking capacity per IEC/EN 60947-2, 18 mm wide, 76 mm deep.

Siemens 5SY4110-8CV datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4110-8CV — Identification
ParameterValue
Number of poles1
Pole design1P
Application suitabilityMechanical engineering / industry
5SY4110-8CV — Electrical & Protection
ParameterValue
Tripping characteristic classD
Overvoltage categoryIII
5SY4110-8CV — 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
5SY4110-8CV — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Pollution degree3
Halogen-freeYes
Silicone-freeYes

Product details

D-curve MCB for motor and transformer circuits

The Siemens 5SY4110-8CV is a 1-pole miniature circuit breaker with a D tripping characteristic, rated 10 A at 230/400 V AC. Breaking capacity is 15 kA per IEC/EN 60947-2, which covers most industrial panel fault levels up to that threshold. At 35 °C ambient it carries the full 10 A; derate to 8.89 A at 40 °C, 7.6 A at 50 °C, and 6.91 A at 55 °C — plan your grouping and ventilation accordingly.

Width is 18 mm (1 modular unit), depth 76 mm, height 90 mm.

Frequently asked questions

What is 5SY4110-8CV used for?

It's a D-curve miniature circuit breaker rated 10 A, 15 kA breaking capacity per IEC/EN 60947-2, designed for motor, transformer, and other high-inrush loads in industrial control panels.

Where can I buy 5SY4110-8CV?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the difference between 5SY4110-8CV and 5SY4110-7CV?

Both are 1-pole 10 A MCBs; the 8CV uses a D tripping curve (10–20× In), while the 7CV uses a C curve (5–10× In). The D curve suits motor and transformer loads; the C curve is for general-purpose distribution. They share the same 18 mm width, 76 mm depth, and 15 kA breaking capacity — so the 8CV drops into a panel wired for the 7CV without rewiring, but the trip behavior changes.

What compliance documentation does Siemens provide for 5SY4110-8CV?

The breaker is designed to IEC/EN 60947-2, halogen-free and silicon-free. It carries a degree of pollution 3 rating and overvoltage category III. For specific RoHS, REACH, or UL documentation, request the manufacturer's declaration at quote time.

MPN
5SY4110-8CV