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Siemens 3RT1015-2BW42 — Contactors

Siemens 3RT1015-2BW42 SIRIUS Power Contactor, 48 V DC Coil,

MPN3RT1015-2BW42

Siemens SIRIUS power contactor, 3RT1015-2BW42, size S00, 48 V DC coil, spring-loaded terminals, IP20 front, 10 A at 24 V DC.

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

3RT1015-2BW42 — Identification
ParameterValue
Contactor frame sizeS00
3RT1015-2BW42 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
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
3RT1015-2BW42 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1015-2BW42 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1015-2BW42 — 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
3RT1015-2BW42 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (0,25 ... 2,5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT1015-2BW42 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1015-2BW42 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Installation altitude, max.2 000 m
3RT1015-2BW42 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

Rated operational current at AC-12 (resistive) is 10 A; for motor duty, AC-2 at 400 V delivers 3 kW, and AC-4 at 400 V is rated 6.5 A. Mechanical endurance is listed at 30 000 000 cycles typical, which is high for the S00 frame — expect the electrical life to be lower under full load, but the mechanism itself will outlast most panel refreshes.

Main and auxiliary/control circuits use spring-loaded terminals accepting 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (24 to 14 AWG). No screwdriver torque to check — strip to 8 mm, push in.

The degree of pollution is 3, so in dirty or conductive-dust environments, consider a conformal coating or a higher-IP enclosure.

Frequently asked questions

What is the depth of 3RT1015-2BW42?

The depth is 73 mm. That is the dimension from the DIN rail mounting surface to the front of the contactor — account for wiring space and door clearance in your enclosure layout.

What wire sizes fit the spring-loaded terminals?

The terminals accept 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (24 to 14 AWG). No ferrule required, but stripped length should be about 8 mm for a secure connection.

Will 3RT1015-2BW42 drop into a panel specified for 3RT1015-1BB42?

Both share the S00 frame and the same 45 mm width, 60 mm height, and 73 mm depth, so the mechanical footprint is identical. The key difference is the coil: 3RT1015-2BW42 is 48 V DC, while the -1BB42 variant uses a different coil voltage. Verify the control voltage matches before swapping — if the panel supplies 48 V DC, it will drop in without rewiring.

Where can I buy 3RT1015-2BW42 and how is it quoted?

This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — the quote will reflect real-time market conditions and lead time.

MPN
3RT1015-2BW42