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Siemens 5SY8502-8 — 1-Pole MCB (DIN Rail)

Siemens 5SY8502-8 SENTRON MCB, 2-Pole D-Curve, 70 kA

MPN5SY8502-8
Active

Siemens SENTRON 5SY8502-8 miniature circuit breaker, 2-pole, D tripping characteristic, 70 kA at 230 V AC per IEC 60947-2, 2 MW units wide.

Siemens 5SY8502-8 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY8502-8 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles2
Application suitabilityMechanical engineering / industry
5SY8502-8 — Electrical & Protection
ParameterValue
Tripping characteristic classD
Overvoltage categoryIII
5SY8502-8 — Mounting & Connection
ParameterValue
Mounting positionany
Fastening methodQuick assembly system
Combined terminal, topYes
Combined terminal, bottomYes
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Modular width units2
Torque, min.-40 °C
Torque, max.75 °C
SealableYes
5SY8502-8 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Pollution degree3
Halogen-freeYes
Silicone-freeYes

Product details

The 2-pole form factor with neutral conductor switching (1P+N) occupies 2 modular-width units (36 mm) on the DIN rail, and the 76 mm depth leaves clearance for standard enclosure depths. Rated current derates with ambient temperature: 2 A at 45 °C, 1.95 A at 50 °C, 1.9 A at 55 °C. For a panel running at 50 °C, the continuous load should not exceed 1.95 A per pole to stay within the thermal curve. The D-curve also carries a DC breaking capacity of 15 kA per IEC 60947-2, relevant for DC link or battery-backed circuits.

Deployment context

Snap-on mounting to a DIN rail in any orientation, with quick-assembly system fastening.

The 5SY8502-8 carries approvals per IEC 60947-2 (70 kA breaking capacity), UL 1077 and CSA C22.2 No. 235 (5 kA), and is halogen-free and silicon-free. The manufacturer provides RoHS and REACH compliance documentation on request.

Frequently asked questions

What is the breaking capacity of the 5SY8502-8?

70 kA at 230 V AC per IEC 60947-2, and 15 kA at DC per the same standard. For UL 1077 / CSA applications, the rating is 5 kA.

Where can I buy the 5SY8502-8?

Sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the tripping characteristic of the 5SY8502-8?

D-curve, designed for loads with high inrush current such as motors and transformers. The D characteristic tolerates 10–20× rated current for short durations.

Does the 5SY8502-8 switch the neutral?

Yes, it is a 1P+N configuration with neutral conductor switching, so both phase and neutral are interrupted on a fault.

MPN
5SY8502-8