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Siemens 3RT1026-1BB40-1AA0-ZX95 — Contactors

Siemens 3RT1026-1BB40-1AA0-ZX95 SIRIUS Power Contactor, 24 V

MPN3RT1026-1BB40-1AA0-ZX95

Siemens SIRIUS power contactor, size S0, 24 VDC coil, screw-type terminals, 45 mm width, IP20 front protection.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RT1026-1BB40-1AA0-ZX95 — Identification
ParameterValue
Contactor frame sizeS0
3RT1026-1BB40-1AA0-ZX95 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V15.5 A
Rated value @ 400 V3 A
Rated value @ 500 V11 kW
Rated value @ 690 V11 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
3RT1026-1BB40-1AA0-ZX95 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1026-1BB40-1AA0-ZX95 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1026-1BB40-1AA0-ZX95 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 100 A
Short-circuit coordination type 2, fusefuse gL/gG: 35 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1026-1BB40-1AA0-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
3RT1026-1BB40-1AA0-ZX95 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1026-1BB40-1AA0-ZX95 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1026-1BB40-1AA0-ZX95 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth101 mm

Product details

It carries a 24 VDC coil that pulls in at 5.4 W and holds at the same power — no AC hum, no rectifier needed, just a steady DC draw that's predictable for the PLC output driving it. Rated for AC-3 duty (motor start/run) at 11 kW on both 500 V and 690 V supplies, and 15.5 A in AC-4 (inching/plugging) at 400 V. For resistive or general-use circuits (AC-12), the maximum operating current is 10 A. The 45 mm width and 85 mm height fit standard S0 panel layouts. Side-by-side mounting is allowed with zero clearance — no derating required for adjacent contactors at rated load, though the 6 mm side clearance to grounded metal is the minimum to maintain.

Coordination and wiring reality

Screw-type terminals on the main circuit accept 2x (1 to 2.5 mm²) or 2x (2.5 to 6 mm²) stranded, max 2x 10 mm². AWG equivalents are 2x (16 to 12) and 2x (14 to 10), with a single 8 AWG max. The coil terminals take smaller wire: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Strip and torque to the SIRIUS standard — no special tooling needed. Short-circuit protection depends on your coordination choice. This matters for selectivity studies on the panel's feeder breaker. Front protection is IP20 — safe for finger contact in an enclosed panel; the terminals themselves are IP00, so the panel door must be closed during operation.

Frequently asked questions

What are the key ratings I need to verify fit?

The contactor is rated for AC-3 motor duty at 11 kW on 500 V and 690 V supplies. The coil is 24 VDC with a 5.4 W holding power. Frame size S0 (45 mm wide) mounts on 35 mm DIN rail. Maximum operating current in AC-12 (resistive) is 10 A.

How does this compare to the 3RT1015-1BB42?

The 3RT1015-1BB42 is a smaller frame (S00, 45 mm wide but shorter depth) with lower motor ratings — typically up to 5.5 kW at 400 V. The 3RT1026 is the next size up in the S0 frame, handling 11 kW at 500/690 V. Both share the same 24 VDC coil voltage and screw terminal family, but the 3RT1026 carries higher current and power ratings. Panel cutouts differ slightly due to depth; verify the 101 mm depth fits your enclosure before swapping.

What compliance documentation is available?

The part carries the standard Siemens SIRIUS compliance package including CE marking for the European market. Specific certifications (UL, CSA, CCC) depend on the exact suffix variant; the base 3RT1026 series typically holds UL and CSA listings for North America. RoHS and REACH declarations are available from Siemens documentation portal.

MPN
3RT1026-1BB40-1AA0-ZX95