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Siemens 5SY7105-8 — 1-Pole MCB (DIN Rail)

Siemens 5SY7105-8 SENTRON MCB, 1P, D-curve, 0.5 A, 15 kA

MPN5SY7105-8
Active

Siemens SENTRON 5SY7105-8, 1-pole miniature circuit breaker, D tripping characteristic, 0.5 A rated current, 15 kA (EN 60898) / 50 kA (IEC 60947-2) breaking capacity, 400 V AC, 18 mm wide.

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

5SY7105-8 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles1
Application suitabilityMechanical engineering / industry
5SY7105-8 — Electrical & Protection
ParameterValue
Tripping characteristic classD
Rated value (EN 60898)15 kA
Overvoltage categoryIII
5SY7105-8 — 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
5SY7105-8 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Pollution degree3
Halogen-freeYes
Silicone-freeYes

Product details

Rated 0.5 A at 35 °C and 400 V AC, it snaps onto a standard DIN rail and takes up just one modular width (18 mm). The 18 mm width and 76 mm depth let it fit tight panel layouts without crowding adjacent breakers or terminal blocks. Mounting position is unrestricted — lay it flat, vertical, or upside-down; the arc chamber works the same.

Breaking capacity — what the two ratings mean

This breaker carries two breaking-capacity numbers because it's certified under two different standards. For DC circuits, the IEC 60947-2 rating drops to 15 kA — still respectable for battery banks or DC bus protection in drives.

Frequently asked questions

What is the breaking capacity of the 5SY7105-8?

The 5SY7105-8 has a 15 kA breaking capacity per EN 60898 and a 50 kA breaking capacity per IEC 60947-2, both at 400 V AC. For DC circuits it is rated 15 kA per IEC 60947-2.

Where can I buy the 5SY7105-8 and get current pricing?

The 5SY7105-8 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

Will the 5SY7105-8 drop into a panel specified for the 5SY3132-6?

Both are 1-pole SENTRON MCBs with the same 18 mm width and DIN-rail mounting, so the 5SY7105-8 fits the same panel footprint. The key difference is the tripping curve and current rating — the 5SY3132-6 is a different characteristic and amp rating, so verify coordination and load requirements before swapping.

What compliance documentation does Siemens provide for the 5SY7105-8?

The 5SY7105-8 is certified under EN 60898 and IEC 60947-2. It carries pollution degree 3, overvoltage category III, and is rated for 50/60 Hz supply. The housing is halogen-free and silicon-free. Specific RoHS, REACH, and UL documentation is available from Siemens upon request.

MPN
5SY7105-8