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Siemens 5SP4150-6 — 1-Pole MCB (DIN Rail)

Siemens SENTRON 5SP4150-6 MCB, 1P, B-Curve, 50 A, 10 kA

MPN5SP4150-6

Siemens SENTRON 5SP4 series, miniature circuit breaker, 1-pole, B-curve, 50 A, 400 V AC, 10 kA (EN 60898) / 20 kA (IEC 60947-2), tunnel terminals top and bottom, 70 mm installation depth.

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

Specifications

5SP4150-6 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles1
5SP4150-6 — Electrical & Protection
ParameterValue
Tripping characteristic classB
Rated value (EN 60898)10 kA
5SP4150-6 — Mounting & Connection
ParameterValue
Installation depth70 mm
5SP4150-6 — Other specifications
ParameterValue
Tunnel terminals topYes
Design of the product5SP Miniature circuit breakers
Number of poles (Note)1P
Tunnel terminals bottomYes
Circuit-breaker (Design)5SP4
Current (at AC)50 A
Acc. to IEC 60947-2 / rated value20 kA
Supply voltage (at AC)400 V

Product details

The 70 mm installation depth and tunnel terminals top and bottom make it a straight swap into standard DIN-rail distribution boards.

In a 230/400 V distribution board, a single-pole 50 A B-curve MCB protects a branch circuit feeding resistive loads like lighting banks, heating elements, or small UPS feeds — not motor starters or drives that pull higher inrush. That dual rating means the same part satisfies both residential and light industrial coordination studies.

Integration notes

Tunnel terminals top and bottom accept copper conductors — no special lug kit needed. Single-pole form factor takes one modular width (roughly 18 mm) on the rail.

Frequently asked questions

What is the breaking capacity of 5SP4150-6?

10 kA per EN 60898 and 20 kA per IEC 60947-2, giving dual coverage for residential and industrial panel fault levels.

Where can I buy 5SP4150-6?

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

What does the B-curve mean on this MCB?

The B-curve trips between 3 and 5 times rated current, making it suitable for resistive and general-purpose loads with moderate inrush — not for motor circuits that need a C or D curve.

MPN
5SP4150-6