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Siemens 5SL1132-6MB — 1-Pole MCB (DIN Rail)

Siemens 5SL1132-6MB SENTRON MCB, 1P B-Curve 32A 3kA

MPN5SL1132-6MB

Siemens SENTRON 5SL1132-6MB, 1-pole miniature circuit breaker, B characteristic, 32 A, 230/400 V AC, 3 kA breaking capacity per IEC 60947-2, 1 MW width.

Siemens 5SL1132-6MB datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL1132-6MB — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles1
Pole design1P
Application suitabilityResidential buildings/infrastructure
5SL1132-6MB — Electrical & Protection
ParameterValue
Tripping characteristic classB
Overvoltage categoryIII
5SL1132-6MB — Mounting & Connection
ParameterValue
Mounting positionany
Width18 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Modular width units1
Torque, min.-40 °C
Torque, max.75 °C
SealableYes
5SL1132-6MB — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Pollution degree2
Halogen-freeYes
Silicone-freeYes

Product details

It breaks fault currents up to 3 kA per IEC 60947-2 at 230/400 V AC, 50/60 Hz. It is not intended for motor-starting duty where higher inrush would nuisance-trip a B-curve device.

Fit and footprint

Mounting position is unrestricted. The IP20 rating applies only with conductors connected — meaning the terminals are finger-safe once wired, but the breaker itself is not sealed against dust ingress in an unpopulated panel. Sealable design allows a lockout tagout hasp on the toggle.

Electrical environment

The single-pole unit switches the line conductor only; neutral must be bonded separately. Power dissipation is 3.1 W per pole at rated current — negligible for a single unit but worth summing in a densely populated sub-distribution board.

Frequently asked questions

What is the breaking capacity of the 5SL1132-6MB?

It is rated 3 kA according to IEC 60947-2. That is the maximum prospective fault current it can safely interrupt at 230/400 V AC without welding its contacts or rupturing the arc chamber.

What does the B-curve mean on this breaker?

The B characteristic trips magnetically at 3 to 5 times rated current (96–160 A for this 32 A unit). That makes it appropriate for resistive loads and general-purpose circuits where inrush is low — lighting, socket outlets, small appliances — not for motor or transformer circuits that draw a higher starting surge.

Where can I buy the 5SL1132-6MB?

This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at the time of quotation.

Will the 5SL1132-6MB drop into a panel designed for a 5SL4363-7?

No — the 5SL4363-7 is a 3-pole unit (54 mm wide, 3 MW) with a C-curve and 10 kA breaking capacity. The 5SL1132-6MB is a single-pole (18 mm, 1 MW) B-curve device. They share the same depth (76 mm) and DIN-rail mounting, but the pole count, width, characteristic, and interrupting rating are all different. A panel wired for the 3-pole unit would need rewiring to accept this single-pole breaker.

MPN
5SL1132-6MB