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Siemens 3UA5040-1C Thermal Overload Relay for Motor Protection

Siemens 3UA5040-1C Thermal Overload Relay

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ManufacturerSiemens

Part number3UA5040-1C

Current Setting Range 16-25A

Auxiliary Contacts 1 NO + 1 NC

Mounting Direct mount onto contactor/starter

Type Thermal Overload Relay

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Adjustable current setting Direct mounting Thermal overload protection 1NO+1NC auxiliary contacts High current capacity

Product description

The Siemens 3UA5040-1C is a thermal, time-delayed overload relay designed for robust motor protection and direct mounting onto Siemens contactors and starters. This unit features an adjustable current setting range from 16 to 25 Amperes, suitable for larger motors and demanding industrial applications. It is equipped with one normally open (NO) and one normally closed (NC) auxiliary contact for integrated control and signaling functions.

This overload relay is critical for safeguarding industrial motors against damage from overcurrents, phase loss, and other electrical disturbances. Its higher current rating makes it suitable for use in heavy-duty applications such as large pumps, compressors, crushers, and manufacturing machinery, ensuring operational reliability and longevity.

As a veteran-owned surplus parts distributor, Stanlo Automation provides the Siemens 3UA5040-1C, ensuring you receive quality components at competitive prices. We understand the urgency of keeping your industrial operations running, offering efficient service and prompt delivery of essential automation parts.

Technical specifications

Current Setting Range	16-25A
Auxiliary Contacts	1 NO + 1 NC
Mounting	Direct mount onto contactor/starter
Type	Thermal Overload Relay

Common applications

Heavy-duty motor protection

Industrial machinery

Pump stations

Compressor control

Manufacturing lines

Compatible systems

Siemens 3RT series contactors Siemens 3RH series contactors

Also known as

Siemens 3UA5040-1C overload relay 3UA50401C thermal relay Siemens 25A overload relay

Replaces / compatible with

The Siemens 3UA5040-1C is designed for direct mounting on compatible Siemens contactors, serving as a reliable replacement for existing overload protection devices in industrial motor control systems.

Technical note

Expert tip

For optimal performance, ensure the Siemens 3UA5040-1C is correctly sized for the motor's full load current and that it's mounted to an appropriately rated Siemens contactor.

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Frequently asked questions

What is the maximum current rating for the Siemens 3UA5040-1C overload relay?

The Siemens 3UA5040-1C thermal overload relay has an adjustable current setting range from 16 to 25 Amperes. This makes it suitable for protecting larger motors in demanding industrial applications.