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Siemens 3RT2023-1NB30 9A 3-Pole Contactor, AC/DC Coil

Siemens 3RT2023-1NB30 9A 3-pole power contactor with 21-28V AC/DC coil.

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ManufacturerSiemens

Part number3RT2023-1NB30

Poles 3

AC-3e/AC-3 Rating 9 A

Power Rating 4 kW / 400 V

Coil Voltage 21-28 V AC/DC

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AC-3e/AC-3 rated 9A current capacity 21-28V AC/DC coil Integrated varistor 1 NO + 1 NC auxiliary contacts Screw terminals

Product description

The Siemens 3RT2023-1NB30 is a 3-pole power contactor designed for AC-3e/AC-3 applications, rated at 9A and 4kW at 400V. This size S0 contactor features a versatile 21-28V AC/DC coil operating at 50/60 Hz and includes integrated varistor protection. It is equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact and utilizes screw terminals for connection.

This contactor is suitable for a wide range of industrial applications, including motor control, switching of capacitor banks, and general power switching. Its AC/DC coil makes it adaptable to various control power sources common in automation systems, making it a flexible choice for engineers. Industries such as manufacturing, HVAC, and water treatment can benefit from its reliable performance.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the Siemens 3RT2023-1NB30. We pride ourselves on providing quality components with efficient service and competitive pricing to support your operational needs.

Technical specifications

Poles	3
AC-3e/AC-3 Rating	9 A
Power Rating	4 kW / 400 V
Coil Voltage	21-28 V AC/DC
Frequency	50/60 Hz
Auxiliary Contacts	1 NO + 1 NC
Terminals	Screw
Size	S0
Protection	Integrated varistor

Common applications

Motor control

Automation systems

HVAC systems

Industrial machinery

Power switching

Control panels

Compatible systems

AC Control Systems DC Control Systems Automation Panels

Also known as

Siemens 3RT2023-1NB30 Contactor Siemens S0 AC/DC Contactor 3RT20 Contactor

Replaces / compatible with

This part can replace other Siemens 3RT2023 series contactors with similar ratings and AC/DC coil specifications. Always verify compatibility before replacement.

Technical note

Expert tip

The integrated varistor in the 3RT2023-1NB30 provides basic surge suppression, protecting the coil from transient overvoltages common in industrial environments.

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Frequently asked questions

What is the voltage and frequency range for the Siemens 3RT2023-1NB30 coil?

The Siemens 3RT2023-1NB30 features a coil that operates within a voltage range of 21-28V AC/DC and is compatible with both 50 Hz and 60 Hz frequencies.