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Siemens 3RT2024-1BW40 — Contactors

Siemens 3RT2024-1BW40 SIRIUS S0 Power Contactor, 48 VDC Coil

MPN3RT2024-1BW40
Active

Siemens SIRIUS, S0 power contactor, 3RT2024-1BW40, 48 VDC coil, screw-type terminals, 1.1x full-scale rated current, 10 000 000 mechanical cycles.

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

3RT2024-1BW40 — Identification
ParameterValue
Contactor frame sizeS0
3RT2024-1BW40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V12.5 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V2 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2024-1BW40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2024-1BW40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2024-1BW40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (415V,80kA)
Short-circuit coordination type 2, fusegG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2024-1BW40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid1 ... 10 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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
3RT2024-1BW40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2024-1BW40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2024-1BW40 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth107 mm

Product details

SIRIUS S0 contactor, 48 VDC coil

The Siemens 3RT2024-1BW40 is a SIRIUS S0 power contactor with a 48 VDC coil and screw-type terminals. It's rated for a full-scale value of 1.1 times the nominal current, with main contacts sized for 16 to 8 A applications. Mechanical life is typical 10 000 000 operations, and it's rated for up to 1 000 switching cycles per hour under AC-1, AC-2, and AC-3 duty, dropping to 300 cycles per hour under AC-4.

Wiring and auxiliary contacts

Auxiliary switch contacts are present, accepting 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded. The coil is screw-type, so expect standard termination. Arcing time is 10 to 10 ms at DC, with dropout time 15 to 18 ms at DC.

Frequently asked questions

What are the key dimensions for panel layout?

The S0 frame is 45 mm wide, 85 mm tall, and 107 mm deep. Clearance requirements: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side.

What wire sizes does the main contact terminal accept?

Solid or stranded wire from 1 to 10 mm². The auxiliary switch terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²).

What is the switching frequency rating?

Rated for up to 1 000 switching cycles per hour under AC-1, AC-2, and AC-3 duty. Under AC-4 duty, the maximum is 300 cycles per hour.

MPN
3RT2024-1BW40