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Siemens 5SL4520-8 — 1-Pole MCB (DIN Rail)

Siemens 5SL4520-8 SENTRON MCB, 20 A, D Curve, 10 kA, 1P+N

MPN5SL4520-8
Active

Siemens SENTRON 5SL4 series, 5SL4520-8 miniature circuit breaker, 20 A, D characteristic, 10 kA, 1P+N, 230 V AC.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL4520-8 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles2
Application suitabilityResidential buildings/infrastructure
5SL4520-8 — Electrical & Protection
ParameterValue
Tripping characteristic classD
Rated value (EN 60898)10 kA
Overvoltage category3
5SL4520-8 — Mounting & Connection
ParameterValue
Mounting positionany
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
SealableYes
5SL4520-8 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Halogen-freeYes
Silicone-freeYes

Product details

It is a 1P+N unit — switching the live pole and switching the neutral — rated 230 V AC (250 V AC in single-phase operation), with a 10 kA breaking capacity per both EN 60898 and IEC 60947-2.

20 A continuous rating and 10 kA SCCR at 230/250 V AC define the fault-clearing capability. Energy limiting class 3 means it restricts let-through energy during a fault — less stress on downstream wiring and connected equipment compared to class 1 or 2 breakers. The 1P+N configuration with neutral switching is common in single-phase final subcircuits where isolating both poles is required by local wiring rules; the neutral pole is not overcurrent-protected, only switched.

Screw terminals accept 0.75–25 mm² solid or stranded copper; tighten to 2.5–3 N·m. Mounting position any orientation; ambient range –25 to +55 °C, storage –40 to +75 °C. IP20 with conductors connected — suitable for enclosed distribution boards only, not for wet or dust-exposed locations.

Frequently asked questions

What is the depth of the 5SL4520-8?

Overall depth is 76 mm; installation depth (behind the panel face) is 70 mm.

What wire sizes does the 5SL4520-8 accept?

Screw terminals accept 0.75 to 25 mm² solid or stranded copper conductors.

MPN
5SL4520-8