Home › Manufacturers › Siemens › 3RT2046-1NB30-0UA0

Siemens

Siemens 3RT2046-1NB30-0UA0 NEMA Contactor - 50 HP

Siemens 3RT2046-1NB30-0UA0 50 HP 3-pole NEMA contactor.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number3RT2046-1NB30-0UA0

Type NEMA Contactor

Poles 3

HP Rating 50 HP

Voltage Rating 460/575V

Get a price for 3RT2046-1NB30-0UA0

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

NEMA rated 50 HP @ 460/575V 20-33V AC/DC coil Integrated varistor 1 NO + 1 NC auxiliary contacts Size S3

Product description

The Siemens 3RT2046-1NB30-0UA0 is a 3-pole NEMA-rated contactor designed for heavy-duty industrial applications. It is rated for 50 HP at 460/575 Volts. This contactor features a versatile 20-33 Volt AC/DC coil and includes an integrated varistor for surge suppression. It comes with 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts and uses screw terminals. The frame size is S3.

This NEMA contactor is ideal for motor control in demanding environments such as heavy manufacturing, mining, and marine applications where robust performance and high horsepower ratings are required. The wide-ranging AC/DC coil offers flexibility in power supply choices.

Stanlo Automation, a veteran-owned surplus distributor, provides the Siemens 3RT2046-1NB30-0UA0. Rely on Stanlo for quality surplus industrial automation components to keep your operations running efficiently.

Technical specifications

Type	NEMA Contactor
Poles	3
HP Rating	50 HP
Voltage Rating	460/575V
Coil Voltage	20-33V AC/DC
Frequency	50/60 Hz
Auxiliary Contacts	1 NO + 1 NC
Integrated Varistor	Yes
Terminal Type	Screw
Size	S3

Common applications

Heavy manufacturing

Mining operations

Marine applications

Large motor control

Industrial machinery

Power distribution

Compatible systems

Heavy-duty motor control Industrial control panels 460/575V power systems AC/DC control power

Also known as

Siemens 3RT2046-1NB30-0UA0 Contactor Siemens NEMA 50HP Contactor 3RT2046 NEMA Contactor S3 NEMA Contactor

Replaces / compatible with

Designed to replace or supplement existing NEMA-rated contactors in high-horsepower motor control applications.

Technical note

Expert tip

The integrated varistor on the 3RT2046-1NB30-0UA0 is crucial for protecting downstream equipment and control circuits from transient voltage spikes common in industrial motor applications.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What is the coil voltage range for the Siemens 3RT2046-1NB30-0UA0 NEMA contactor?

The Siemens 3RT2046-1NB30-0UA0 NEMA contactor features a versatile coil voltage range of 20-33 Volts AC or DC. This broad range allows for flexible integration into various control power systems.