Skip to main content
Log in
Siemens 3RT2023-1NB30 — Contactors

Siemens SIRIUS 3RT2023-1NB30 Power Contactor, S0, 24V Coil

MPN3RT2023-1NB30
Active

Siemens SIRIUS 3RT2023-1NB30 power contactor, S0 size, 24 V DC coil, screw-type terminals, 45 mm width.

Siemens 3RT2023-1NB30 datasheet (PDF)
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

3RT2023-1NB30 — Identification
ParameterValue
Contactor frame sizeS0
3RT2023-1NB30 — 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
3RT2023-1NB30 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.86
Rated value @ 50 Hz21 ... 28 V
3RT2023-1NB30 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2023-1NB30 — 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)
3RT2023-1NB30 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid1 ... 10 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2023-1NB30 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2023-1NB30 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2023-1NB30 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth107 mm
3RT2023-1NB30 — Specifications
ParameterValue
At AC30 ... 50 ms

Product details

Part Identification and Ratings

The coil is rated 21–28 V DC, with a typical inrush peak of 3 A and a holding power factor of 0.7 at 50 Hz. Main contact switching capacity is specified at 10 A at 24 V, 2 A at 48 V and 60 V, and 1 A at 110 V — these are the DC-1 or DC-13 ratings that govern inductive load break. For AC-3 motor duty, the contactor is rated for up to 1 000 operating cycles per hour, and for AC-4 (inching/jogging) up to 300 cycles per hour.

Mounting and Wiring Flexibility

The contactor accepts solid and stranded conductors from 1 to 10 mm², with a dual-wire capability of 2x (0.5–1.5 mm²) or 2x (0.75–2.5 mm²) for auxiliary circuits. The screw-type coil terminals are clearly marked, and the auxiliary switch block is integrated.

Frequently asked questions

What is the closest functional alternative to the 3RT2023-1NB30?

The 3RT2023-1NP30 is the closest peer — same S0 frame, same coil voltage range, and same screw-terminal design. It will drop into the same panel footprint without rewiring, though verify the auxiliary contact configuration if your circuit uses them.

What are the key dimensions of this contactor?

Width is 45 mm, height 85 mm, and depth 107 mm — the standard S0 footprint that fits most DIN-rail enclosures.

What wire sizes does the 3RT2023-1NB30 accept?

It accepts solid and stranded conductors from 1 to 10 mm², and dual-wire terminations of 2x (0.5–1.5 mm²) or 2x (0.75–2.5 mm²) for auxiliary circuits.

What compliance documentation is available for this part?

As a Siemens SIRIUS product, it carries CE marking for the European market and is designed to meet IEC/EN 60947-4-1. RoHS and REACH declarations are provided with the shipment.

MPN
3RT2023-1NB30