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Siemens 3RT2047-3NB30 S3 Power Contactor - 110A, 20-33V AC/DC, Spring Terminals

Siemens 3RT2047-3NB30 S3 power contactor, 110A, 20-33V AC/DC, spring terminals.

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ManufacturerSiemens

Part number3RT2047-3NB30

Type Power Contactor

Part Number 3RT2047-3NB30

Manufacturer Siemens

Poles 3

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110A AC-3e/AC-3 rating 55kW @ 400V Wide-range 20-33V AC/DC coil Integrated varistor for surge protection Spring-loaded terminals for quick wiring 1 NO + 1 NC auxiliary contacts Size S3

Product description

The Siemens 3RT2047-3NB30 is a 3-pole power contactor for AC-3e/AC-3 applications, rated at 110A and 55kW at 400V. It features a wide-range 20-33V AC/DC control coil and includes an integrated varistor for surge protection. This model is equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact. Notably, it utilizes spring-loaded terminals for both the main circuit and the control/auxiliary circuits, simplifying wiring. It is built in size S3.

This contactor is ideal for applications requiring a low, versatile AC/DC control voltage and the convenience of spring-loaded terminals for faster installation and secure connections. The integrated varistor provides protection against voltage spikes. Its design is well-suited for control panels, machinery, and industrial automation systems where ease of wiring and reliability are paramount.

Stanlo Automation, a veteran-owned supplier of industrial automation surplus, offers the Siemens 3RT2047-3NB30. We provide access to quality components and dependable service to support your automation and MRO needs.

Technical specifications

Type	Power Contactor
Part Number	3RT2047-3NB30
Manufacturer	Siemens
Poles	3
AC-3e/AC-3 Current	110 A
Power @ 400V	55 kW
Coil Voltage	20-33 V AC/DC
Integrated Varistor	Yes
Auxiliary Contacts	1 NO + 1 NC
Terminals	Spring-loaded (Main & Control/Aux)
Size	S3

Common applications

Industrial control panels

Automation systems

Machinery with spring terminal requirements

Low voltage control

Fast wiring applications

Control cabinets

Compatible systems

Low-voltage control systems operating on 20-33V AC or DC with spring terminal connections

Also known as

Siemens 3RT2047-3NB30 Contactor SIRIUS 3RT2047-3NB30 Siemens 110A Spring Terminal Contactor

Replaces / compatible with

This Siemens 3RT2047-3NB30 is suitable for replacing existing Siemens contactors and offers the benefit of spring-loaded terminals for simplified installation.

Technical note

Expert tip

The combination of a wide-range AC/DC coil and spring-loaded terminals makes this contactor highly efficient for rapid deployment in control systems.

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Frequently asked questions

What is the advantage of spring-loaded terminals on the Siemens 3RT2047-3NB30?

The spring-loaded terminals on the Siemens 3RT2047-3NB30 allow for faster and simpler wiring compared to screw terminals. They provide a secure and reliable connection without the need for torque-controlled tightening, ideal for high-volume installations or applications with vibration.