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Siemens 3RT1326-1BD40 — Contactors

Siemens 3RT1326-1BD40 SIRIUS Power Contactor, 4 NO, S0 Frame

MPN3RT1326-1BD40

Siemens SIRIUS power contactor, S0 frame, 3RT1326-1BD40, 4 NO main contacts, 11 kW AC-2 at 400 V, 5.4 W DC coil, screw terminals, snap-on 35 mm DIN rail.

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

Specifications

3RT1326-1BD40 — Identification
ParameterValue
Contactor frame sizeS0
3RT1326-1BD40 — Ratings & Performance
ParameterValue
Rated value @ 400 V3 A
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
3RT1326-1BD40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1326-1BD40 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts4
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1326-1BD40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 63 A
Short-circuit coordination type 2, fusefuse gL/gG: 35 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1326-1BD40 — 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
3RT1326-1BD40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1326-1BD40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1326-1BD40 — Mechanical
ParameterValue
Width61 mm
Height85 mm
Depth101 mm

Product details

SIRIUS S0 power contactor — 4 NO, AC-2 rated, DC coil

The DC coil pulls 5.4 W on closing and holds at the same 5.4 W, so no separate hold-in economizer is needed; the coil driver sees a constant load.

Side-by-side mounting is permitted, with 6 mm clearance to adjacent devices on the side. The screw-type main circuit terminals accept up to 2x 10 mm² stranded or 1x 12 AWG; control terminals take 2x (0.5…1.5 mm²) solid or 2x (0.75…2.5 mm²) with ferrule. Front face is IP20, terminal points are IP00 — panel builders should treat the wiring area as touch-hazard until shrouded.

This is an active Siemens SIRIUS catalog line.

Frequently asked questions

What is the AC-2 motor rating of this contactor?

The 3RT1326-1BD40 is rated for 11 kW at 400 V in AC-2 duty, covering slip-ring motor starting and reversing applications.

What fuse is needed for Type 2 coordination?

For Type 2 coordination, use a gL/gG 35 A fuse upstream. For Type 1 coordination, use gL/gG 63 A.

Where can I buy 3RT1326-1BD40?

We source the 3RT1326-1BD40 to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3RT1326-1BD40