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Siemens 3RT1516-1BD40 — Contactors

Siemens 3RT1516-1BD40 SIRIUS Power Contactor, Size S00, 24 V

MPN3RT1516-1BD40

Siemens SIRIUS power contactor, 3RT1516-1BD40, Size S00, 24 VDC coil rated 10 A, screw-type terminals, IP20 front, DIN rail mount.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RT1516-1BD40 — Identification
ParameterValue
Contactor frame sizeS00
3RT1516-1BD40 — Ratings & Performance
ParameterValue
Rated value @ 400 V3 A
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1516-1BD40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1516-1BD40 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts2
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1516-1BD40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 35 A
Short-circuit coordination type 2, fusefuse gL/gG: 20 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1516-1BD40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Side-by-side mountingYes
3RT1516-1BD40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1516-1BD40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RT1516-1BD40 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

The DC coil is rated for 24 V nominal with a pickup voltage of 0.85 x rated value, meaning it reliably pulls in at about 20.4 V. At 24 V the coil draws 10 A inrush, settling to a lower hold current. The contactor is rated for side-by-side mounting without derating, which saves rail space in dense panels.

The main circuit uses screw-type terminals, accepting 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) solid or stranded wire. That covers standard motor and control wiring without needing special ferrules or bootlace ends. The auxiliary circuit also carries a rated impulse voltage of 6 kV, matching the main circuit for coordinated insulation in 400 V line-fed panels. Mechanical life is typical at 30 million operations, so it suits high-cycle applications like conveyor sortation or packaging lines.

Dimensions are 45 mm wide, 57.5 mm high, and 72 mm deep — a compact footprint that fits standard 45 mm-wide DIN-rail slots. The mounting position allows vertical surface mounting with +/-180° rotation and +/-30° tilt front-to-back, giving flexibility in tight enclosures. Side clearance of 6 mm is required at the side for arc flash containment.

Frequently asked questions

What is the closest functional second-source to 3RT1516-1BD40?

The closest peer in the SIRIUS Size S00 family is 3RT1015-1BB42, which uses a 24 VAC/DC coil but has a different coil power rating and terminal arrangement. The 3RT1516-1BD40 is a direct 24 VDC coil variant; swapping to an AC-rated coil may require circuit changes. Verify coil compatibility before substituting.

What is the depth of 3RT1516-1BD40?

The depth is 72 mm from the mounting surface to the front of the contactor.

What wire sizes does the 3RT1516-1BD40 accept?

The screw terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) solid or stranded conductors.

Will 3RT1516-1BD40 drop into a panel specified for 3RT1015-1BB42 without rewiring?

Both are Size S00 contactors with the same DIN-rail footprint and screw terminal layout, so mechanical fit is the same. However, the coil voltage and power differ — 3RT1516-1BD40 is 24 VDC only, while 3RT1015-1BB42 is 24 VAC/DC. If the panel supplies 24 VAC, the DC coil may not hold in. Rewiring the coil supply to DC is required.

What compliance documentation does Siemens provide for 3RT1516-1BD40?

Siemens provides a declaration of conformity for IEC/EN 60947-4-1, CE marking, and RoHS compliance. The part carries UL and CSA certification under the SIRIUS family file. Specific document numbers are available on request.

MPN
3RT1516-1BD40