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Siemens 3RT1015-2BF42 — Contactors

Siemens 3RT1015-2BF42 SIRIUS Power Contactor, 110 VDC Coil,

MPN3RT1015-2BF42

Siemens SIRIUS 3RT1015-2BF42 power contactor, size S00, 110 VDC coil, spring-loaded terminals, AC-3 rated 3.5 kW at 500 V and 4 kW at 690 V.

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

3RT1015-2BF42 — Identification
ParameterValue
Contactor frame sizeS00
3RT1015-2BF42 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V6.5 A
Rated value @ 400 V3 A
Rated value @ 500 V3.5 kW
Rated value @ 690 V4 kW
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
3RT1015-2BF42 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1015-2BF42 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1015-2BF42 — 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
3RT1015-2BF42 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Side-by-side mountingYes
3RT1015-2BF42 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1015-2BF42 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1015-2BF42 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

The coil draws 3.3 W both at closing and holding, so there's no inrush spike to budget for on the DC supply — a steady 3.3 W load from pickup through dropout. Rated for AC-3 duty at 3.5 kW on a 500 V line and 4 kW at 690 V, this contactor handles typical three-phase induction motors in that power band. For resistive or lightly inductive loads (AC-1), the continuous current rating is 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — useful for heater banks or transformer primary switching.

Spring-loaded terminals accept 2x (0.25 to 2.5 mm²) solid or stranded wire, or 2x (24 to 14 AWG). The 6 mm clearance to adjacent components at the side is the minimum air gap for the rated insulation.

Frequently asked questions

What is the closest functional second-source for 3RT1015-2BF42?

The 3RT1015-1BB42 shares the same S00 frame, 110 VDC coil, and AC-3 ratings but uses screw terminals instead of spring-loaded. It drops into the same DIN-rail footprint without rewiring the coil or load side — just the terminal type changes.

What is the depth of this contactor?

The depth is 73 mm, with a width of 45 mm and height of 60 mm.

What wire sizes does the spring-loaded terminal accept?

It accepts 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (24 to 14 AWG).

Will 3RT1015-2BF42 drop into a panel specified around 3RT1015-1BB42?

Yes — same S00 footprint, same mounting rail, same coil voltage. The only difference is the main circuit termination: spring-loaded on the -2BF42 versus screw-type on the -1BB42. No rewiring of the coil or load circuit is needed if the terminal type is acceptable.

MPN
3RT1015-2BF42