Skip to main content
Siemens 3RT2326-2BB40 — Contactors

Siemens 3RT2326-2BB40 SIRIUS Contactor, 24 VDC Coil, S0 Size

MPN3RT2326-2BB40
Active

Siemens SIRIUS 3RT2326-2BB40, Size S0 contactor, 24 VDC coil, spring-type terminals, screw and snap-on 35 mm DIN rail mounting.

$67.31Ref. price · indicative, final on quote
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

3RT2326-2BB40 — Identification
ParameterValue
Contactor frame sizeS0
3RT2326-2BB40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V7.5 kW
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V10 A
Rated value @ 24 V10 A
Rated value @ 60 V6 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2326-2BB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2326-2BB40 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts4
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2326-2BB40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 63 A (690 V, 100 kA)
Short-circuit coordination type 2, fusegG: 20 A (690 V, 100 kA)
Aux. switch short-circuit protection, fusegG: 10 A (690 V, 1 kA)
3RT2326-2BB40 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.5 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (0.5 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2326-2BB40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2326-2BB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2326-2BB40 — Mechanical
ParameterValue
Width60 mm
Height102 mm
Depth107 mm

Product details

The S0 frame size is the compact footprint in the SIRIUS line, fitting into panels where space is at a premium. The auxiliary contact ratings span from 10 A at 24 V DC down to 0.1 A at 600 V, covering pilot duty and low-energy signal switching.

The 24 VDC coil is the standard low-voltage DC control supply found in most modern panels. The main contact terminals accept stranded wire up to 10 mm², sized for motor branch circuits up to the contactor's thermal rating.

Dimensions are 60 mm wide, 102 mm high, and 107 mm deep. The 60 mm width is a standard module size for DIN-rail components, matching the footprint of a typical motor-protective circuit breaker or overload relay. The contactor can accept up to two auxiliary contact blocks, allowing expansion of the switching capacity for status feedback or interlocking without a separate relay.

Frequently asked questions

What are the key ratings for the auxiliary contacts?

The auxiliary contacts are rated for 10 A at 24 V DC, 2 A at 48 V DC, 6 A at 60 V DC, 1 A at 110 V DC, 0.9 A at 125 V DC, 0.3 A at 220 V DC, 10 A at 230 V AC, 3 A at 400 V AC, 2 A at 500 V AC, 0.1 A at 600 V AC, and 1 A at 690 V AC. These cover both DC pilot circuits and AC control voltages.

What wire sizes does the spring terminal accept?

The magnet coil spring terminal accepts solid or stranded wire from 0.5 to 2.5 mm². The main contact terminals accept stranded wire from 1 to 10 mm².

What is the mounting method and clearance requirement?

The contactor mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715. Required clearances are 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side.

What is the mechanical life expectancy?

The typical mechanical life is 10,000,000 operations, which suits high-cycle applications like conveyor systems or packaging machinery.

MPN
3RT2326-2BB40