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Siemens 5SP4140-6 — 1-Pole MCB (DIN Rail)

Siemens SENTRON 5SP4140-6 MCB, 1-pole B-curve 40A, 10/20 kA

MPN5SP4140-6

Siemens SENTRON 5SP4 series, miniature circuit breaker, 1-pole, B-curve, 40 A, 10 kA (EN 60898) / 20 kA (IEC 60947-2), 400 V AC, 70 mm depth, pollution degree 3.

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

Specifications

5SP4140-6 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles1
5SP4140-6 — Electrical & Protection
ParameterValue
Tripping characteristic classB
Rated value (EN 60898)10 kA
5SP4140-6 — Mounting & Connection
ParameterValue
Installation depth70 mm
5SP4140-6 — Environmental
ParameterValue
Pollution degree3
5SP4140-6 — Other specifications
ParameterValue
Tunnel terminals topYes
Design of the product5SP Miniature circuit breakers
Number of width units1.5
Number of poles (Note)1P
Tunnel terminals bottomYes
Circuit-breaker (Design)5SP4
Acc. to IEC 60947-2 / rated value20 kA
Supply voltage (at AC)400 V
Operating current (at AC)40 A

Product details

The Siemens SENTRON 5SP4140-6 is a 1-pole miniature circuit breaker (MCB) with a B-curve tripping characteristic, rated 40 A at 400 V AC. The 10 kA breaking capacity per EN 60898 covers most residential and light commercial panel faults; the 20 kA rating per IEC 60947-2 gives headroom for industrial distribution where higher prospective fault currents are expected.

The 5SP4140-6 occupies 1.5 width units on a DIN rail — slightly wider than a standard 1-module (18 mm) MCB, so check rail space if retrofitting into a populated enclosure. Installation depth is 70 mm, which fits standard distribution boards and small enclosures.

Frequently asked questions

Where can I buy the 5SP4140-6 and get a price?

The 5SP4140-6 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the breaking capacity of the 5SP4140-6?

10 kA per EN 60898 and 20 kA per IEC 60947-2 — the higher figure applies when the MCB is used in an industrial distribution system under the IEC standard.

Will the 5SP4140-6 drop into a panel designed for the 5SY4116-6CC?

Both are 1-pole SENTRON MCBs with 70 mm installation depth and B-curve, but the 5SP4140-6 is rated 40 A versus 16 A for the 5SY4116-6CC, and it occupies 1.5 width units instead of 1. The panel's busbar and conductor sizing must support 40 A; the DIN rail footprint is the same, but the extra half-module width may crowd adjacent devices.

MPN
5SP4140-6