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Siemens 5SP5291-7 — 2-Pole MCB (DIN Rail)

Siemens 5SP5291-7 SENTRON MCB, 100A 2P C-Curve, 440V AC

MPN5SP5291-7

Siemens SENTRON 5SP5 series miniature circuit breaker, 5SP5291-7, 2-pole, C-curve, 100 A rated current, 440 V AC / 250 V DC, 3 kA breaking capacity per EN 60898.

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

Specifications

5SP5291-7 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
5SP5291-7 — Electrical
ParameterValue
Number of poles2
5SP5291-7 — Protection
ParameterValue
Tripping characteristic classC
Overvoltage category3
5SP5291-7 — Mechanical
ParameterValue
Width54 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Min.-40 °C
Max.75 °C
Protection degree (IP)IP20, with connected conductors

Product details

On the DC side it is rated 250 V, with a 10 kA breaking capacity per EN 60898-2 and 15 kA per IEC 60947-2, so it handles DC fault currents up to those levels without welding the contacts. At 3 width units (54 mm wide), it occupies three 18 mm DIN-rail slots. The 70 mm installation depth and 76 mm overall depth mean it clears most standard enclosures, but check the gland-plate clearance on shallow 80 mm deep panels. Tunnel terminals top and bottom accept solid or ferruled conductors — no lug adapters needed for the 100 A rating, though the terminal sizing should be verified against the conductor cross-section for the full load. Rated for any mounting position and any power-supply cord position, so it fits without orientation restrictions inside the panel.

Halogen-free and silicon-free construction reduces corrosion risk in sealed enclosures and meets material restrictions for clean-room or food-beverage adjacent areas. Touch protection is built into the terminals, so no additional finger-safe shrouds are needed for the front face.

Rated for -40 °C to 75 °C ambient, with up to 95% humidity. Shock resistance tested at 150 m/s² for 11 ms half-sine (IEC 60068-2-27) and vibration at 50 m/s² from 25 to 150 Hz (IEC 60068-2-6). These figures confirm it survives transport and panel-mount vibration on conveyor lines or pump skids without nuisance tripping.

Frequently asked questions

Will 5SP5291-7 drop into a panel specified around 5SP4292-7 without rewiring?

Both are 2-pole SENTRON MCBs on the same DIN-rail footprint, so the mechanical fit and terminal layout are identical. No rewiring needed for the swap, but confirm the breaking capacity and tripping curve match the circuit design.

MPN
5SP5291-7