Skip to main content
Log in
Siemens 5SY4280-7CC — 2-Pole MCB (DIN Rail)

Siemens SENTRON 5SY4280-7CC MCB, 2P C-80A 400V 10kA

MPN5SY4280-7CC

Siemens SENTRON miniature circuit breaker, 5SY4280-7CC, 2-pole, C-curve, 80 A, 400 V AC, 10 kA breaking capacity per IEC 60947-2.

Siemens 5SY4280-7CC datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4280-7CC — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentMechanical engineering / industry
5SY4280-7CC — Electrical
ParameterValue
Number of poles2
5SY4280-7CC — Protection
ParameterValue
Tripping characteristic classC
Overvoltage categoryIII
5SY4280-7CC — Mechanical
ParameterValue
Modular width units2
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Min.-40 °C
Max.75 °C
Protection degree (IP)IP20, with connected conductors
5SY4280-7CC — Environmental
ParameterValue
Pollution degree3
5SY4280-7CC — Specifications
ParameterValue
At AC rated value400 V
With single-phase operation at AC rated value440 V

Product details

The Siemens SENTRON 5SY4280-7CC is a 2-pole miniature circuit breaker rated 80 A with a C tripping curve, designed for 400 V AC systems and capable of interrupting fault currents up to 10 kA per IEC 60947-2.

The combined terminal at top and bottom accepts both busbar and conductor terminations, which simplifies panel wiring when feeding a downstream distribution block or another breaker.

The vibration resistance (±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz per IEC 60068-2-6) means it holds up on machine-mounted panels near rotating equipment.

Frequently asked questions

Where can I buy 5SY4280-7CC?

The 5SY4280-7CC is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time.

What is the depth of 5SY4280-7CC?

The depth is 76 mm, with an installation depth of 70 mm. Width is 36 mm (2 modular units), height is 90 mm.

What compliance documentation is available for 5SY4280-7CC?

The breaker is designed to IEC 60947-2 (10 kA breaking capacity), UL 1077 and CSA C22.2 No. 235 (5 kA), and carries a CE mark. It is halogen-free and silicon-free. Specific RoHS/REACH declarations are available from Siemens on request.

MPN
5SY4280-7CC