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Siemens 5SL3540-6 — 1-Pole MCB (DIN Rail)

Siemens 5SL3540-6 SENTRON MCB, 40 A, B Curve, 2-Pole, 4.5 kA

MPN5SL3540-6

Siemens SENTRON 5SL3 series miniature circuit breaker, 5SL3540-6, 40 A rated current, B tripping characteristic, 2-pole (1P+N), 4.5 kA breaking capacity per EN 60898 and IEC 60947-2.

Siemens 5SL3540-6 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL3540-6 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles2
Application suitabilityResidential buildings/infrastructure
5SL3540-6 — Electrical & Protection
ParameterValue
Tripping characteristic classB
Rated value (EN 60898)4.5 kA
Overvoltage category3
5SL3540-6 — Mounting & Connection
ParameterValue
Mounting positionany
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
SealableYes
5SL3540-6 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Halogen-freeYes
Silicone-freeYes

Product details

What this MCB does and where it fits

The Siemens 5SL3540-6 is a 2-pole (1P+N) miniature circuit breaker from the SENTRON 5SL3 family, rated 40 A at 230 V AC with a B tripping curve. The neutral pole switches with the phase (1P+N), so you get full isolation on both conductors in a single module width.

It accepts solid or stranded copper from 0.75 mm² up to 25 mm² at the screw terminals, with a recommended tightening torque of 2.5 to 3 N·m. The device is sealable — useful for installations where tamper-proofing is required.

Frequently asked questions

What are the key ratings of the 5SL3540-6?

Rated current 40 A at 230 V AC, B tripping characteristic, 4.5 kA breaking capacity per EN 60898 and IEC 60947-2, 2-pole (1P+N), accepts 0.75–25 mm² conductors.

Where can I buy the 5SL3540-6 and get current pricing?

This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time.

Will the 5SL3540-6 drop into a panel specified for 5SL6563-7BB without rewiring?

Both are 2-pole SENTRON MCBs on the same DIN-rail footprint, but the 5SL6563-7BB is a D-curve device — the tripping characteristic differs. The 5SL3540-6 uses a B curve (3–5× In), so verify that the load inrush does not exceed the B-curve tolerance before swapping. Wiring terminal capacity (0.75–25 mm²) and torque range (2.5–3 N·m) are identical.

MPN
5SL3540-6