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Siemens 3UA43-00-8AQ Overload Relay for Separate Mounting

Siemens 3UA43-00-8AQ thermal overload relay, 70-100A.

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ManufacturerSiemens

Part number3UA43-00-8AQ

Type Thermal Overload Relay

Adjusting Range 70-100A

Auxiliary Contacts 1 NO + 1 NC

Mounting Separate Mounting

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Wide adjustable current range Thermal overload protection Separate mounting flexibility Auxiliary contacts (1NO+1NC) High current capacity Robust Siemens design

Product description

The Siemens 3UA43-00-8AQ is a thermal overload relay designed for separate mounting and robust motor protection. With an adjustable setting range from 70 to 100 Amps, it is suitable for larger motors. This relay includes one normally open (NO) and one normally closed (NC) auxiliary contact for control circuit integration, signaling, or protective interlocks.

This overload relay is ideal for applications requiring protection for high-power motors, commonly found in heavy industry, large-scale manufacturing, and complex machinery. Its separate mounting capability offers flexibility in control panel design, allowing it to be installed independently of the contactor while maintaining effective thermal protection.

Stanlo Automation, a veteran-owned supplier of industrial automation parts, offers the Siemens 3UA43-00-8AQ. We provide reliable surplus components to ensure your operations are efficient and protected. Trust Stanlo Automation for your high-capacity motor protection needs and benefit from our commitment to quality and service.

Technical specifications

Type	Thermal Overload Relay
Adjusting Range	70-100A
Auxiliary Contacts	1 NO + 1 NC
Mounting	Separate Mounting
Manufacturer	Siemens

Common applications

Heavy industry motors

Large manufacturing equipment

Industrial pumps

Material handling systems

Power generation

High-capacity motor control

Compatible systems

Siemens contactors and control systems requiring separate mounting overload protection

Also known as

Siemens 3UA43-00-8AQ overload 3UA43-00-8AQ motor protection Siemens 70-100A overload relay

Replaces / compatible with

Designed for separate mounting, this relay is compatible with Siemens contactors and control systems requiring overload protection in the 70-100A range. Consult Siemens documentation for specific contactor compatibility.

Technical note

Expert tip

When using for separate mounting, ensure proper wiring and connection to the associated contactor or starter circuit for correct thermal tripping.

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Frequently asked questions

Can the Siemens 3UA43-00-8AQ be mounted directly onto a contactor?

No, the Siemens 3UA43-00-8AQ is specifically designed for separate mounting. This provides greater flexibility in control panel layouts compared to relays that mount directly onto contactors.