Siemens
Siemens 3UA5900-2B Thermal Delayed Overload Relay
Siemens 3UA5900-2B Thermal Delayed Overload Relay
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12-Mo Warranty
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12-month warranty
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Same-day dispatch
Order by 2pm CST
Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
Thermal overload protection
Adjustable amp setting
1NO+1NC auxiliary contacts
Phase loss protection
Manual or automatic reset
Product description
The Siemens 3UA5900-2B is a thermal-delayed overload relay designed for installation as a single unit. It features an adjustable setting range of 12.5 to 20 Amps and includes one normally open (NO) and one normally closed (NC) auxiliary contact.
This relay provides robust protection for medium to large motors against thermal overloads and phase failures, ensuring the integrity and longevity of electrical equipment.
Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3UA5900-2B. We are committed to providing reliable industrial automation components and excellent customer service.
Technical specifications
| Setting Range | 12.5-20A |
| Contacts | 1NO+1NC |
| Type | Thermal Delayed Overload Relay |
| Mounting | Single Unit Installation |
| Manufacturer | Siemens |
Common applications
Industrial motor control
Manufacturing equipment
Automation systems
Pump control
Fan systems
Compatible systems
Siemens 3TF30-3TF46 contactors
Also known as
Siemens 3UA59-00-2B, 3UA59002B, Siemens thermal relay
Replaces / compatible with
This overload relay is part of the Siemens 3UA59 series, suitable for applications requiring specific thermal protection settings.
Technical note
Expert tip
This relay supports manual or automatic reset options, allowing for flexible configuration based on operational requirements and safety protocols.What happens next?
1
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Immediate receipt acknowledgment sent to you
2
Account manager assigned
Confirms your part's spec and condition
3
Your quote delivered
Tailored to your specific requirements
Frequently asked questions
What contactors are compatible with the Siemens 3UA5900-2B overload relay?
The Siemens 3UA5900-2B overload relay is suitable for use with Siemens 3TF30, 3TF31, 3TF32, 3TF33, 3TF34, 3TF35, 3TF40, 3TF41, 3TF42, 3TF43, 3TF44, 3TF45, and 3TF46 contactors.