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Siemens 5SY4506-8CV — 1-Pole MCB (DIN Rail)

Siemens 5SY4506-8CV MCB, 1P+N D6, 15kA Icu 230/400V

MPN5SY4506-8CV

Siemens 5SY series MCB, 1P+N, D6, Icu=15kA at 230/400 V AC, order code 5SY4506-8CV.

Siemens 5SY4506-8CV datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Product details

The Siemens 5SY4506-8CV is a miniature circuit breaker (MCB) in the 5SY series, rated for a breaking capacity of 15 kA at 230/400 V AC in a 1P+N configuration with a D6 tripping characteristic.

The 15 kA Icu (ultimate breaking capacity) at 230/400 V tells you this breaker can safely interrupt a fault current up to 15,000 A without welding its contacts or failing catastrophically — critical for panel coordination where the upstream transformer can deliver that kind of fault energy. The 1P+N format switches the line conductor and disconnects the neutral, common in single-phase final subcircuits where you want full isolation. D6 curve: 6 A thermal rating with the magnetic trip set for 60–120 A, so it holds through motor start currents but trips fast on a bolted fault.

Panel integration

The 1-pole-width footprint (about 18 mm per pole) keeps panel density high.

Frequently asked questions

Where can I buy the 5SY4506-8CV and how is it quoted?

We source this part to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — no stock count or price is published here because market conditions vary with volume and timing.

What does the D6 curve mean on this MCB?

The D-curve magnetic trip operates at 10–20 times the rated current (60–120 A for a 6 A breaker), making it suitable for loads with high inrush like motors, transformers, or welding equipment. The 6 A thermal element protects the cable under sustained overload.

What is the breaking capacity of the 5SY4506-8CV?

It is rated for 15 kA Icu at 230/400 V AC, which means it can safely interrupt a fault current up to 15,000 amperes — sufficient for most commercial and light industrial panelboards fed by a typical distribution transformer.

MPN
5SY4506-8CV