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Siemens 3RT2023-1BB44 — Contactors

Siemens 3RT2023-1BB44 SIRIUS Power Contactor, 24 VDC, Size S

MPN3RT2023-1BB44
Active

Siemens SIRIUS power contactor, 3RT2023-1BB44, Size S0, 24 VDC coil, screw terminals, 45 mm wide, rated for AC-3 motor switching at up to 1000 operating cycles per hour.

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

3RT2023-1BB44 — Identification
ParameterValue
Contactor frame sizeS0
3RT2023-1BB44 — 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
3RT2023-1BB44 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2023-1BB44 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2023-1BB44 — 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)
3RT2023-1BB44 — 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
3RT2023-1BB44 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2023-1BB44 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2023-1BB44 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth151 mm

Product details

It carries a 24 VDC coil and is fitted with screw-type terminals for main and auxiliary wiring. The contactor mounts on 35 mm DIN rail per DIN EN 60715, with screw-and-snap fastening, and allows ±180° rotation on a vertical surface plus ±22.5° tilt forward/backward — useful when panel layout demands a non-standard orientation.

The AC-3 switching frequency is rated at 1 000 operating cycles per hour maximum — that governs motor starting duty for pumps, fans, and conveyors. AC-4 duty (plugging/reversing) is limited to 300 cycles/h, so if your application involves frequent inching or reversing, factor that lower rate into the service life estimate. Wire termination accepts solid or stranded conductors from 1 to 10 mm² for the main circuit, and 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) for auxiliary circuits — covers standard panel wiring without needing ferrule adapters. The screw terminals are the standard S0 footprint, so replacement or retrofit into an existing S0 panel is straightforward. Dimensions: 85 mm high, 45 mm wide, 151 mm deep.

Frequently asked questions

What are the key dimensions of the 3RT2023-1BB44?

The contactor measures 85 mm high, 45 mm wide, and 151 mm deep. Clearance to adjacent devices: 10 mm upwards, forwards, and downwards; 6 mm at the side.

Where can I buy the 3RT2023-1BB44?

This part is available to order through independent distribution. Submit an RFQ for a firm price and lead-time confirmation — availability is confirmed at quote time, not on a public stock counter.

What wire sizes does the 3RT2023-1BB44 accept?

Main circuit terminals accept solid or stranded conductors from 1 to 10 mm². Auxiliary terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²). All terminals are screw-type.

MPN
3RT2023-1BB44