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Siemens 3UA50000J Thermal Overload Relay for Motor Protection

Siemens 3UA50000J Thermal Overload Relay

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ManufacturerSiemens

Part number3UA50000J

Current Setting Range 0.63-1A

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 Suitable for low-current motors

Product description

The Siemens 3UA50000J is a thermal, time-delayed overload relay designed for direct mounting onto compatible Siemens contactors and starters. This relay is specifically configured for lower current applications, with an adjustable setting range from 0.63 to 1 Ampere. It includes one normally open (NO) and one normally closed (NC) auxiliary contact, facilitating integration into control and alarm systems.

This overload relay is essential for protecting smaller electric motors and sensitive equipment from damage due to overcurrents, phase imbalances, or other electrical faults. Its precise setting range makes it ideal for applications requiring sensitive motor protection, such as in small pumps, fans, or specialized machinery.

Stanlo Automation, a veteran-owned distributor, offers the Siemens 3UA50000J as part of our extensive inventory of surplus industrial automation components. We are committed to providing reliable parts at competitive prices, ensuring your systems are operational with minimal delay. Choose Stanlo for your automation needs.

Technical specifications

Current Setting Range	0.63-1A
Auxiliary Contacts	1 NO + 1 NC
Mounting	Direct mount onto contactor/starter
Type	Thermal Overload Relay

Common applications

Small motor protection

Fan control

Pump control

HVAC components

Specialized machinery

Compatible systems

Siemens 3RT series contactors Siemens 3RH series contactors

Also known as

Siemens 3UA50000J overload relay 3UA50000J thermal relay Siemens starter overload

Replaces / compatible with

Designed for use with Siemens 3RT and 3RH series contactors, the 3UA50000J provides overload protection for motors requiring precise low-current settings.

Technical note

Expert tip

Ensure the selected contactor is compatible with the 3UA50000J for direct mounting and proper electrical connection.

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Frequently asked questions

What type of motors is the Siemens 3UA50000J overload relay best suited for?

The Siemens 3UA50000J overload relay, with its 0.63-1A setting range, is ideal for protecting smaller electric motors and sensitive equipment. It's well-suited for applications like small fans, pumps, or specialized machinery requiring precise low-current overload protection.