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Siemens 5SY7104-8CC — 1-Pole MCB (DIN Rail)

Siemens 5SY7104-8CC SENTRON MCB, D Curve, 1-Pole, 30 kA

MPN5SY7104-8CC

Siemens SENTRON 5SY7104-8CC, miniature circuit breaker, D characteristic, 1-pole, 30 kA (IEC 60947-2), 18 mm width.

Siemens 5SY7104-8CC datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY7104-8CC — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles1
Pole design1P
Application suitabilityMechanical engineering / industry
5SY7104-8CC — Electrical & Protection
ParameterValue
Tripping characteristic classD
Overvoltage categoryIII
5SY7104-8CC — 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
5SY7104-8CC — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Pollution degree3
Halogen-freeYes
Silicone-freeYes

Product details

The Siemens 5SY7104-8CC is a SENTRON miniature circuit breaker with a D tripping characteristic, single-pole design, and a rated breaking capacity of 30 kA according to IEC 60947-2. It occupies one modular width unit (18 mm) on the DIN rail, with a depth of 76 mm and a height of 90 mm.

The quick-assembly fastening system and combined top/bottom terminals simplify busbar and wiring connections. With an IP20 rating (with connected conductors) and pollution degree 3, it is suitable for installation in industrial control panels where dust and non-conductive contamination are present.

Rated for ambient temperatures from -40 °C to 75 °C, with humidity derating above 55 °C. Vibration resistance per IEC 60068-2-6 covers ±1 mm at 5–25 Hz and 50 m/s² at 25–150 Hz, so it holds up on machine-mounted panels.

Frequently asked questions

Where can I buy 5SY7104-8CC and get a price?

The 5SY7104-8CC is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the closest functional second-source for 5SY7104-8CC?

The 5SY4101-7CV is a peer miniature circuit breaker from the same SENTRON family, but it carries a C tripping characteristic rather than the D curve of the 5SY7104-8CC. The D curve's higher magnetic trip threshold makes the 5SY7104-8CC the correct choice for loads with high inrush — the 5SY4101-7CV would nuisance-trip on the same motor or transformer start-up. Panel footprint (18 mm width, DIN rail) is shared, so mechanical fit is the same, but the trip curve difference means they are not drop-in functional substitutes.

What compliance documentation does Siemens provide for 5SY7104-8CC?

The breaker is rated per IEC 60947-2 (30 kA breaking capacity) and UL 1077 / CSA C22.2 No. 235 (5 kA). It carries pollution degree 3 and overvoltage category III ratings. The manufacturer typically provides CE, UKCA, and EAC declarations, as well as RoHS and REACH compliance statements on request.

MPN
5SY7104-8CC