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Siemens 3RT2027-1BB44-ZX95 — Contactors

Siemens 3RT2027-1BB44-ZX95 SIRIUS Power Contactor, 24 VDC Co

MPN3RT2027-1BB44-ZX95
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Siemens SIRIUS power contactor, 3RT2027-1BB44-ZX95, S0 frame, 24 VDC coil, screw-type terminals, 45 mm width, 151 mm depth, rated 6 A at 24 V.

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

3RT2027-1BB44-ZX95 — Identification
ParameterValue
Contactor frame sizeS0
3RT2027-1BB44-ZX95 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V22 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V5 hp
Rated value @ 24 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2027-1BB44-ZX95 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2027-1BB44-ZX95 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2027-1BB44-ZX95 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 125A (690V,100kA), aM: 50A (690V,100kA), BS88: 125A (415V,80kA)
Short-circuit coordination type 2, fusegG: 50A (690V,100kA), aM: 25A (690V, 100kA), BS88: 50A (415V, 80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2027-1BB44-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
3RT2027-1BB44-ZX95 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2027-1BB44-ZX95 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2027-1BB44-ZX95 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth151 mm

Product details

SIRIUS S0 frame, 24 VDC — what this contactor is for

The 24 VDC coil pulls in at 0.8 of rated voltage and holds reliably across the -25 to +60 °C operating range. Rated switching current at 24 V is 6 A, with a mechanical endurance of 10 million cycles typical — built for high-cycle applications like conveyor lines or pump stations.

Dimensions and wiring — panel fit

At 45 mm wide, 85 mm tall, and 151 mm deep, this S0 contactor fits a standard 45 mm DIN slot. Main contact wiring accepts solid or stranded 1 to 10 mm² — enough for the 6 A rated current. The coil uses screw-type terminals; auxiliary contact wiring takes 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²).

Maximum operating frequency varies by duty: 1000 cycles/hour at AC-1 (resistive), 750 cycles/hour at AC-2 and AC-3 (motor starting/running), and 250 cycles/hour at AC-4 (plugging/inching). DC switching capability: 6 A at 24 V, 2 A at 48 V and 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. Arcing time is 10 to 10 ms — consistent and predictable for coordination studies. The contactor is rated 5 hp at 230 V for motor applications.

Frequently asked questions

What is the depth of this contactor?

The depth is 151 mm, with a width of 45 mm and height of 85 mm.

What wire sizes does the main contact accept?

Solid or stranded conductors from 1 to 10 mm².

Will the 3RT2027-1BB44-ZX95 drop into a panel wired for a 3RT2015-1BW42?

Both are S0 frame size and mount on 35 mm DIN rail, so the physical footprint and rail clip are identical. However, verify the coil voltage (24 VDC here) and the rated current against your load — the 3RT2015 series has different switching ratings. No rewiring of the DIN rail or panel cutout is needed.

Where can I buy the 3RT2027-1BB44-ZX95 and get current pricing?

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

MPN
3RT2027-1BB44-ZX95