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Siemens 3RT1024-1DB44-ZX95 — Contactors

Siemens 3RT1024-1DB44-ZX95 SIRIUS Power Contactor, 24 VDC, S

MPN3RT1024-1DB44-ZX95

Siemens SIRIUS power contactor, size S0, 24 VDC coil, screw-type terminals, varistor surge suppression, IP20 front / IP00 terminals.

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

3RT1024-1DB44-ZX95 — Identification
ParameterValue
Contactor frame sizeS0
3RT1024-1DB44-ZX95 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V12.5 A
Rated value @ 400 V3 A
Rated value @ 500 V7.5 kW
Rated value @ 690 V7.5 kW
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1024-1DB44-ZX95 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1024-1DB44-ZX95 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1024-1DB44-ZX95 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 63 A
Short-circuit coordination type 2, fusefuse gL/gG: 25 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1024-1DB44-ZX95 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Side-by-side mountingYes
3RT1024-1DB44-ZX95 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1024-1DB44-ZX95 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1024-1DB44-ZX95 — Mechanical
ParameterValue
Width45 mm
Height88 mm
Depth150 mm

Product details

The coil draws 5.4 W on both pickup and hold, with a built-in varistor surge suppressor across the coil terminals — no external snubber needed for DC switching. Panel integration is straightforward: the S0 footprint is 45 mm wide, 88 mm tall, and 150 mm deep, with 6 mm clearance required at the side for side-by-side mounting.

The AC-4 rating of 12.5 A at 400 V governs plugging and inching duty — the hardest thermal cycle for a contactor because the motor is stalled during reversal. At 500 V and 690 V, the motor power rating holds at 7.5 kW — a useful headroom for 400 V motors on a 690 V line. The auxiliary contacts are rated for 10 A at 24 VDC, derating to 6 A at 230 V and 0.3 A at 220 VDC — typical for control-circuit switching. Type 2 coordination (fuse gL/gG: 25 A) and Type 1 coordination (fuse gL/gG: 63 A) are both specified, so the contactor integrates into existing selective-coordination schemes without re-engineering the upstream protection.

The main contact wiring accepts 2x (1.0–2.5 mm²), 2x (2.5–6 mm²), or max 2x 10 mm² solid/stranded, with AWG equivalents 2x (16–12), 2x (14–10), or 1x 8. The auxiliary/solid terminals accept 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), or max 2x (0.75–4 mm²). Strip length and torque values follow standard SIRIUS practice — no special tooling required beyond a screwdriver and a ferrule crimper for stranded wire.

Frequently asked questions

Where can I buy 3RT1024-1DB44-ZX95?

This contactor is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What are the key ratings of 3RT1024-1DB44-ZX95?

The contactor is rated AC-4 12.5 A at 400 V for plugging duty, AC-2 5.5 kW at 400 V for motor starting, and AC-12 10 A for resistive loads. The coil is 24 VDC with built-in varistor suppression. Mechanical life is 10 million operations typical.

MPN
3RT1024-1DB44-ZX95