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Siemens 3RT2317-2BM40 — Contactors

Siemens 3RT2317-2BM40 SIRIUS Contactor, 12 A, 5.5 kW AC-3

MPN3RT2317-2BM40
Active

Siemens SIRIUS contactor, size S00, 3RT2317-2BM40, 12 A at 400 V, 5.5 kW AC-3, spring-loaded terminals, screw and snap-on mounting onto 35 mm DIN rail.

Siemens 3RT2317-2BM40 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2317-2BM40 — Identification
ParameterValue
Contactor frame sizeS00
3RT2317-2BM40 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V4 kW
Rated value @ 400 V12 A
3RT2317-2BM40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2317-2BM40 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts4
3RT2317-2BM40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 35 A (690 V, 100 kA)
Short-circuit coordination type 2, fusegG: 20 A (690 V, 100 kA)
Aux. switch short-circuit protection, fusegG: 10 A (690 V, 1 kA)
3RT2317-2BM40 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.5 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (0,5 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2317-2BM40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2317-2BM40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2317-2BM40 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth73 mm

Product details

What this contactor does on the line

The Siemens 3RT2317-2BM40 is a SIRIUS contactor in frame size S00, rated 12 A at 400 V and 5.5 kW in AC-3 duty — that means it switches three-phase induction motors up to that power under full load, making it a fit for small conveyors, pumps, and fan drives on a 400 V line. The spring-loaded terminals on both the main circuit and the coil eliminate routine screw-torque checks; you land the wire, it holds.

Cycle time and electrical endurance

Panel fit and spacing

Side-by-side mounting is allowed, with a 6 mm clearance required at the side.

Frequently asked questions

When sourcing 3RT2317-2BM40, what's the closest functional second-source — 3RT2326-1BK80?

The 3RT2326-1BK80 is a physically larger frame (S0 vs S00) with higher current ratings; it will not drop into a panel wired for the S00 footprint without rewiring and a wider DIN-rail slot. The 3RT2317-2BM40 is the correct size S00 part for a 12 A / 5.5 kW AC-3 application.

Will 3RT2317-2BM40 drop into a panel that was specified around 3RT2326-1BK80 without rewiring?

No — the 3RT2317-2BM40 is size S00 (45 mm wide) while the 3RT2326-1BK80 is a larger frame. The mounting hole pattern, DIN-rail footprint, and terminal spacing differ, so rewiring and a different panel cutout would be required.

MPN
3RT2317-2BM40