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Siemens 5SL3225-6 — 2-Pole MCB (DIN Rail)

Siemens 5SL3225-6 SENTRON MCB, 2P, 25 A, B Curve, 4.5 kA

MPN5SL3225-6

Siemens SENTRON 5SL3225-6 miniature circuit breaker, 2-pole, 25 A, B tripping characteristic, 4.5 kA breaking capacity per EN 60898, 400 V AC, 2 width units (36 mm).

Siemens 5SL3225-6 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL3225-6 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentResidential buildings/infrastructure
5SL3225-6 — Electrical
ParameterValue
Number of poles2
5SL3225-6 — Protection
ParameterValue
Tripping characteristic classB
Overvoltage category3
5SL3225-6 — Mechanical
ParameterValue
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Protection degree (IP)IP20, with connected conductors

Product details

It's built for residential and infrastructure panels — think lighting, socket circuits, and general-purpose branch protection in a DIN-rail enclosure.

The B curve means the magnetic trip activates at 3 to 5 times rated current (75–125 A for this 25 A unit), so it's a good fit for resistive and general-purpose loads where inrush isn't severe — lighting, small transformers, control circuits. Rated 400 V AC phase-to-phase, with a maximum of 440 V in multi-phase operation. The 2-pole configuration switches both live conductors but does not switch the neutral — verify your circuit's neutral switching requirement before specifying. Terminal torque spec is 2.5 to 3 N·m, and the screw terminals accept solid or stranded conductors from 0.75 to 25 mm².

Frequently asked questions

How do I get current pricing and availability for 5SL3225-6?

Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels.

What is 5SL3225-6's listed depth?

The depth is 76 mm, with an installation depth of 70 mm. Width is 36 mm (2 width units), height is 90 mm.

What conductor sizes does 5SL3225-6 accept?

The screw terminals accept solid and stranded conductors from 0.75 mm² up to 25 mm².

Will 5SL3225-6 drop into a panel specified around 5SL3120-6MB without rewiring?

Both are 2-pole SENTRON 5SL3 miniature circuit breakers with the same 36 mm width and DIN-rail footprint, so mechanical fit is identical. The difference is rating: 5SL3225-6 is 25 A B-curve, while 5SL3120-6MB is a different current/curve variant — verify the circuit's required protection rating before swapping.

What compliance documentation does Siemens provide for 5SL3225-6?

The part carries approvals per EN 60898 and IEC 60947-2 for breaking capacity. It is halogen-free and silicon-free. Specific RoHS/REACH/UL declarations are typically available from Siemens documentation; request them with your RFQ if needed for compliance review.

MPN
5SL3225-6