BOM / RFQ

Siemens 5SN6310-8CP — 3-Pole MCB (DIN Rail)

Siemens 5SN6310-8CP MCB, 3-Pole C-Curve, 6kA EN 60898, 15kA

MPN5SN6310-8CP

Siemens 5SN MCB, 3-pole, C-curve, 400 V AC, 6 kA (EN 60898) / 15 kA (IEC 60947-2), 54 x 90 x 76 mm.

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

Specifications

5SN6310-8CP — Identification
Parameter	Value
Number of poles	3

5SN6310-8CP — Protection
Parameter	Value
Breaking capacity per EN 60898	6 kA
Breaking capacity per IEC 60947-2	15 kA

5SN6310-8CP — Electrical
Parameter	Value
Rated voltage (AC, multi-phase)	440 V
Power loss per pole at rated current (AC, hot)	0.9 W
Mechanical service life (operating cycles, typ.)	10 000
Rated voltage (AC, single-phase)	440 V

5SN6310-8CP — Mechanical
Parameter	Value
Modular width units	3
Width	54 mm
Height	90 mm
Depth	76 mm
Installation depth	70 mm
Terminal tightening torque, max.	75 °C
Terminal tightening torque, min.	-40 °C

Product details

Siemens 5SN6310-8CP is a 3-pole miniature circuit breaker from the 5SN series, C-curve tripping characteristic, rated 400 V AC at 50 Hz. Breaks 6 kA per EN 60898 and 15 kA per IEC 60947-2 — the higher IEC figure is the one that governs industrial panel coordination when the upstream transformer can deliver that fault current. DC rating maxes at 72 V.

Listed as current production.

Occupies 3 modular width units (54 mm wide), 76 mm deep, 90 mm tall. Installs on standard DIN rail. Terminal accepts up to 35 mm² solid.

Frequently asked questions

Will 5SN6310-8CP drop into a panel that was specified around 5SY4304-7CV without rewiring?

Yes. Both occupy 3 modular units (54 mm wide), same 76 mm depth, same 90 mm height, same DIN-rail mount. Terminal capacity up to 35 mm² solid on both. No panel modification needed.