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Siemens 3UA5900-1H Thermal Overload Relay - 5-8A Setting

Siemens 3UA5900-1H thermal overload relay with adjustable 5-8A setting.

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ManufacturerSiemens

Part number3UA5900-1H

Type Thermal Overload Relay

Setting Range 5 to 8A

Contacts 1 NO + 1 NC

Installation Single Unit

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Thermal Overload Protection Adjustable Setting Range (5-8A) 1 Normally Open Contact 1 Normally Closed Contact Single Unit Installation Reliable Motor Protection

Product description

The Siemens 3UA5900-1H is a thermal overload relay designed for the protection of electric motors against overcurrents and phase failures. It is intended for installation as a single unit and features an adjustable setting range from 5 to 8 Amperes. This relay provides essential safety by tripping the circuit when motor current exceeds a set limit for a sustained period.

Equipped with one normally open (NO) and one normally closed (NC) auxiliary contact, this relay can be integrated into control circuits for motor starters, signaling faults, or initiating shutdown sequences. It is commonly used in industrial applications for motor protection in pumps, fans, conveyors, and machine tools.

Stanlo Automation, your veteran-owned source for surplus industrial automation parts, offers the Siemens 3UA5900-1H thermal overload relay. We help you maintain the safety and reliability of your electrical systems by providing access to quality surplus components that ensure effective motor protection.

Technical specifications

Type	Thermal Overload Relay
Setting Range	5 to 8A
Contacts	1 NO + 1 NC
Installation	Single Unit

Common applications

Motor Protection

Industrial Control Panels

Pump Starters

Fan Control

Conveyor Systems

Machine Tools

Compatible systems

Compatible with Siemens contactors and control systems requiring thermal overload protection. Suitable for single or three-phase motor applications.

Also known as

Siemens 3UA59001H 3UA5900-1H Relay Thermal Relay 5-8A

Replaces / compatible with

This thermal overload relay is designed to protect motors in conjunction with contactors or as a standalone protection device. It replaces older or worn overload protection modules.

Technical note

Expert tip

Ensure the overload relay is correctly sized and set for the specific motor's full load current (FLC) to provide adequate protection without nuisance tripping.

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Frequently asked questions

What is the adjustable setting range for the Siemens 3UA5900-1H thermal overload relay?

The Siemens 3UA5900-1H thermal overload relay has an adjustable setting range of 5 to 8 Amperes. This allows for precise calibration to protect electric motors of various power ratings against overcurrents.