Skip to main content
Log in
Siemens 5SL3525-6 — 1-Pole MCB (DIN Rail)

Siemens SENTRON 5SL3525-6 MCB, 25A 1P+N B-Curve, 4.5kA

MPN5SL3525-6

Siemens SENTRON 5SL3 series, 5SL3525-6 miniature circuit breaker, 25 A, 1P+N, B tripping characteristic, 4.5 kA breaking capacity, 230 V AC.

Siemens 5SL3525-6 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL3525-6 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles2
Application suitabilityResidential buildings/infrastructure
5SL3525-6 — Electrical & Protection
ParameterValue
Tripping characteristic classB
Rated value (EN 60898)4.5 kA
Overvoltage category3
5SL3525-6 — Mounting & Connection
ParameterValue
Mounting positionany
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
SealableYes
5SL3525-6 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Halogen-freeYes
Silicone-freeYes

Product details

What this 25 A B-curve MCB is for

The 25 A continuous rating is the load it can carry without nuisance tripping in a 30 °C ambient — derate if you're packing it into a hot enclosure. The B curve (3-5x In magnetic trip) is deliberate: it avoids nuisance trips on inrush from small motors or capacitive loads while still protecting wiring. The 1P+N form factor means it occupies 2 width units (36 mm) on a DIN rail, and with an installation depth of 70 mm (76 mm overall) it fits standard distribution boards without a deep enclosure. Wire range accepts 0.75 to 25 mm² solid or stranded, with a tightening torque of 2.5 to 3 N·m on the screw terminals — common for panel wiring up to 6 mm² tails.

Frequently asked questions

What does the B tripping characteristic mean for this breaker?

The B characteristic means the magnetic trip operates at 3 to 5 times the rated current (75 to 125 A for this 25 A unit). It's designed for general-purpose circuits with resistive and low-inrush loads, avoiding nuisance trips on small motor starts or capacitive loads while still providing short-circuit protection.

Where can I buy the 5SL3525-6 and how is it quoted?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What compliance documentation does Siemens provide for the 5SL3525-6?

The part carries approvals per EN 60898 and IEC 60947-2 for its 4.5 kA breaking capacity. It is designed for residential and infrastructure use, with IP20 protection (with connected conductors) and overvoltage category 3. Standard Siemens documentation includes the declaration of conformity for CE marking; RoHS and REACH compliance data is available on request.

MPN
5SL3525-6