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Siemens 3RT2023-2BB44 — Contactors

Siemens 3RT2023-2BB44 SIRIUS Power Contactor, 24 VDC Coil, 6

MPN3RT2023-2BB44
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Siemens SIRIUS power contactor, Size S0, 24 VDC coil, 6 A rated operating current, spring-type terminals, screw and snap-on 35 mm DIN rail mounting, 45 x 102 x 154 mm.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2023-2BB44 — Identification
ParameterValue
Contactor frame sizeS0
3RT2023-2BB44 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V8.5 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V1 hp
Rated value @ 24 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2023-2BB44 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2023-2BB44 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2023-2BB44 — 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)
3RT2023-2BB44 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid1 ... 10 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2023-2BB44 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2023-2BB44 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2023-2BB44 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth154 mm

Product details

The 24 VDC coil draws a rated operating current of 6 A, with a pickup threshold of 0.8 x rated voltage and a dropout below that. Spring-type terminals accept solid or stranded conductors from 1 to 10 mm², with dual-wire capability for 2x (0.5 to 2.5 mm²).

Coil and switching ratings

Coil ratings at 24 VDC: 6 A. At higher DC voltages the current drops — 2 A at 48 V or 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V. The AC-3 motor switching rating supports up to 1 000 operating cycles per hour, while AC-4 (inching/jogging) is limited to 300 cycles per hour. Mechanical life is typical 10 000 000 operations.

The Size S0 footprint (45 mm wide, 102 mm tall, 154 mm deep) fits standard DIN-rail enclosures. Spring terminals reduce wiring time versus screw terminals — strip length for solid/stranded is 10 mm. No special tooling needed beyond a screwdriver for the spring release.

Frequently asked questions

What are the key ratings for 3RT2023-2BB44?

24 VDC coil rated 6 A, Size S0 frame, spring-type terminals accepting 1–10 mm² wire, switching frequency up to 1000 cycles/hour for AC-3 duty, mechanical life 10 million operations.

Where can I buy 3RT2023-2BB44 and get a price?

This part is sourced to order against an RFQ through independent distribution. Submit a request for quotation — current pricing and availability are confirmed at quote time.

Does 3RT2023-2BB44 have an auxiliary switch built in?

No, the base contactor has no auxiliary switch. You need to add a separate auxiliary contact block if your circuit requires feedback or signaling.

What wire sizes does the spring terminal accept?

Solid or stranded conductors from 1 to 10 mm², with dual-wire capability for 2x (0.5 to 2.5 mm²).

MPN
3RT2023-2BB44