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Siemens 5SY6108-8 — 1-Pole MCB (DIN Rail)

Siemens SENTRON 5SY6108-8 MCB, 1P D 8 A, 6/15 kA

MPN5SY6108-8

Siemens SENTRON 5SY6 series, 5SY6108-8 miniature circuit breaker, 1-pole D-curve 8 A, 400 V AC, 6 kA / 15 kA breaking capacity, 18 mm width.

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

Specifications

5SY6108-8 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles1
Application suitabilityMechanical engineering / industry
5SY6108-8 — Electrical & Protection
ParameterValue
Tripping characteristic classD
Rated value (EN 60898)6 kA
Overvoltage categoryIII
5SY6108-8 — Mounting & Connection
ParameterValue
Mounting positionany
Combined terminal, topYes
Combined terminal, bottomYes
Width18 mm
Height90 mm
Depth76 mm
Installation depth70 mm
SealableYes
5SY6108-8 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Halogen-freeYes
Silicone-freeYes

Product details

That 15 kA SCCR at 400 V gives headroom for high-fault installations without cascading upstream breakers. For UL/CSA jurisdictions, it carries a 5 kA rating under UL 1077 and CSA C22.2 No.235. Touch protection is built in.

Rated for mechanical engineering and industrial environments per the manufacturer's suitability listing. The 1-pole D-curve 8 A breaker is a common choice for control transformer primaries, small motor branch circuits, or solenoid banks in a panel — any load with a high inrush that needs a dedicated overcurrent device.

Frequently asked questions

What is the breaking capacity of 5SY6108-8?

6 kA per EN 60898 for general distribution, 15 kA per IEC 60947-2 for industrial coordination, and 5 kA per UL 1077 / CSA C22.2 No.235 for North American applications.

What wire sizes does the 5SY6108-8 accept?

The combined box terminals accept solid or stranded conductors from 0.75 to 35 mm².

Where can I buy 5SY6108-8?

Sourced and quoted to order through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment.

MPN
5SY6108-8