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Siemens 3RT2316-1BW40 — Contactors

Siemens 3RT2316-1BW40 SIRIUS Contactor, 4 kW AC-3, 48 VDC Co

MPN3RT2316-1BW40
Active

Siemens SIRIUS, contactor, size S00, 3RT2316-1BW40, 4 kW at 400 V AC-3, 9 A rated operational current, 48 VDC coil, screw-type terminals.

Siemens 3RT2316-1BW40 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2316-1BW40 — Identification
ParameterValue
Contactor frame sizeS00
3RT2316-1BW40 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V4 kW
Rated value @ 400 V9 A
3RT2316-1BW40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2316-1BW40 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts4
3RT2316-1BW40 — 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)
3RT2316-1BW40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2316-1BW40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2316-1BW40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2316-1BW40 — Mechanical
ParameterValue
Width45 mm
Height58 mm
Depth73 mm

Product details

The Siemens SIRIUS 3RT2316-1BW40 is a size S00 contactor rated for 4 kW at 400 V AC-3 duty, meaning it switches three-phase motor loads up to that power in standard industrial control panels. The 48 VDC coil draws a holding power of 4.4 W in hot operating state.

The 9 A rated operational current at 400 V confirms the thermal capacity for continuous motor current. The 48 VDC coil is a common control voltage in North American and European panels; the pickup/dropout ratio (0.8 to 1.1 of rated value) ensures reliable pull-in even with a sagging supply.

The contactor accepts solid or stranded conductors: 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²) for auxiliary circuits, and stranded up to 4 mm² for the main circuit. All terminations are screw-type.

Frequently asked questions

Where can I buy 3RT2316-1BW40 and how do I get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote (RFQ) to receive current availability and pricing — no stock or price figures are published here.

Will 3RT2316-1BW40 drop into a panel that was specified around 3RT2326-1BK80 without rewiring?

Both are size S00 contactors with screw terminals and share the same DIN-rail footprint, so mechanical fit is the same. The key difference is the coil voltage: 3RT2316-1BW40 uses a 48 VDC coil, while 3RT2326-1BK80 uses a different coil voltage. Verify the control voltage matches before substitution.

What compliance documentation does Siemens provide for 3RT2316-1BW40?

The part carries a substance prohibition date of 10/01/2009, indicating RoHS compliance per the EU directive. Standard documentation includes the declaration of conformity and the product datasheet.

MPN
3RT2316-1BW40