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Siemens 3RT2023-1BB44-ZX95 — Contactors

Siemens SIRIUS 3RT2023-1BB44-ZX95 Power Contactor, S0, 24 VD

MPN3RT2023-1BB44-ZX95
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Siemens SIRIUS 3RT2023-1BB44-ZX95 power contactor, size S0, 24 VDC coil, screw-type terminals, 45 mm width, 151 mm depth.

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

Specifications

3RT2023-1BB44-ZX95 — Identification
ParameterValue
Contactor frame sizeS0
3RT2023-1BB44-ZX95 — 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-ZX95 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2023-1BB44-ZX95 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2023-1BB44-ZX95 — 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-ZX95 — 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-ZX95 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2023-1BB44-ZX95 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2023-1BB44-ZX95 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth151 mm

Product details

Switching performance and life

Rated for 1 000 switching cycles per hour under AC-1, AC-2, AC-3, and AC-3e duty, and 300 cycles per hour under AC-4 duty — the heavier AC-4 category (frequent starting/plugging) halves the allowable rate. Arcing time is 10 ms. For DC switching, the contactor handles 6 A at 24 V, 2 A at 48 V, 2 A at 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. At 230 V it's rated for 1 hp motor load.

The coil screw terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) fine-stranded. Torque for main contacts is 16 to 8 Nm. No auxiliary switch is built into this variant — if you need aux contacts, that's a separate order.

Frequently asked questions

What is the depth of this contactor?

The depth is 151 mm, which is the critical dimension for enclosure depth planning.

What wire sizes does it accept?

Main contacts accept solid or stranded wire from 1 to 10 mm². Coil terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) fine-stranded.

MPN
3RT2023-1BB44-ZX95