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Siemens 3RT2023-2KB40 — Contactors

Siemens 3RT2023-2KB40 SIRIUS Coupling Contactor, 24 VDC, 10

MPN3RT2023-2KB40
Active

Siemens SIRIUS coupling contactor, Size S0, 24 VDC coil, 10 A rated, spring-type terminals, screw and snap-on 35 mm DIN rail mounting.

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

3RT2023-2KB40 — Identification
ParameterValue
Contactor frame sizeS0
3RT2023-2KB40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V8.5 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V1 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2023-2KB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2023-2KB40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2023-2KB40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (415V,80kA)
Short-circuit coordination type 2, fusegG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2023-2KB40 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid1 ... 10 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
3RT2023-2KB40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2023-2KB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2023-2KB40 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth107 mm

Product details

Mounting is via screw or snap-on onto 35 mm DIN rail per DIN EN 60715, with the mounting position allowing ±180° rotation and ±22.5° tilt on a vertical surface.

Key Ratings & Fit

The 24 VDC coil draws an initial inrush of 1.25 A and holds at 0.7 A. The S0 frame size (102 mm high, 45 mm wide, 107 mm deep) fits standard panel layouts, with clearance requirements of 10 mm upward/downward/forward and 6 mm at the sides.

Integration Notes

Spring-cage terminals accept 1 to 10 mm² solid or stranded wire, or 2x 0.5 to 2.5 mm². Maximum switching frequency is 1,000 operations per hour for AC-1, AC-2, AC-3, and AC-3e duty, dropping to 300 per hour for AC-4. Mechanical life is typically 10 million cycles.

Frequently asked questions

Where can I buy 3RT2023-2KB40 and get a price?

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

What are the key dimensions of 3RT2023-2KB40?

Height is 102 mm, width is 45 mm, and depth is 107 mm. Clearance requirements are 10 mm upward, downward, and forward, and 6 mm at the sides.

What wire sizes does the 3RT2023-2KB40 accept?

The spring-type terminals accept solid or stranded wire from 1 to 10 mm², or 2x 0.5 to 2.5 mm².

MPN
3RT2023-2KB40