Home › Manufacturers › Siemens › 3RB3143-4XB0

Siemens

Siemens 3RB3143-4XB0 32-115A Electronic Overload Relay (S3)

Siemens 3RB3143-4XB0 Electronic Overload Relay (32-115A)

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

In Stock — Ready to Ship

ManufacturerSiemens

Part number3RB3143-4XB0

Current Range 32-115A

Class 5E-30E (Adjustable)

Size S3

Mounting Contactor Mount

Get a price for 3RB3143-4XB0

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

Electronic overload protection Adjustable 32-115A range Adjustable Class 5E-30E Direct contactor mounting (S3) Screw terminals Manual/Automatic reset

Product description

The Siemens 3RB3143-4XB0 is a heavy-duty electronic overload relay designed for robust motor protection. It features an adjustable current range from 32 to 115 A and offers adjustable tripping classes from 5E to 30E, providing flexibility for various motor starting conditions. This relay offers protection against overload, phase unbalance, and phase failure, utilizing screw terminals for main and auxiliary circuits and supporting manual/automatic reset.

Designed for direct mounting on Siemens 3RT2 series size S3 contactors, this relay is suitable for protecting large industrial motors. Its reliable electronic operation ensures consistent performance and minimizes the risk of motor damage.

Stanlo Automation, your trusted veteran-owned source for surplus industrial automation parts, offers the Siemens 3RB3143-4XB0. We are committed to providing quality components and expert service to keep your operations running smoothly.

Technical specifications

Current Range	32-115A
Class	5E-30E (Adjustable)
Size	S3
Mounting	Contactor Mount
Terminals	Screw
Reset	Manual/Automatic
Functions	Overload, Phase Loss, Phase Unbalance

Common applications

Large motor control

Industrial machinery

Heavy-duty applications

Manufacturing plants

Material handling

Compatible systems

Siemens 3RT2 Size S3 Contactors

Also known as

3RB31434XB0 Siemens 32-115A Overload Relay SIRIUS 3RB31 Overload

Replaces / compatible with

This overload relay is designed for direct mounting on Siemens 3RT2 series size S3 contactors.

Technical note

Expert tip

The electronic nature of this relay provides a wider adjustment range and better accuracy compared to traditional thermal overload relays.

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 maximum voltage rating for the Siemens 3RB3143-4XB0 overload relay?

The Siemens 3RB3143-4XB0 overload relay has a rated voltage of up to 1000V AC for the main circuit, ensuring compatibility with various power systems. The auxiliary circuit is rated for 690V AC.