The Siemens 3UA68305F is a thermal overload relay from the Siemens 3UA / 3UC series, designed to provide reliable motor overload protection in industrial electrical systems. With a current setting range of 320–500 A, it is suitable for high-current motor applications where dependable thermal protection is required.
This overload relay helps protect motors against sustained overload conditions, reducing the risk of excessive heating and potential motor damage. It is suitable for integration into industrial motor control panels, motor starter systems, MCC applications, and motor-driven machinery.
Siemens 3UA68305F thermal overload relay
Series: 3UA / 3UC
Current setting range: 320–500 A
Designed for motor overload protection
Suitable for high-current motor applications
Thermal protection technology
Suitable for motor starter applications
Designed for industrial control panels
Suitable for OEMs, panel builders, and system integrators
The Siemens 3UA68305F thermal overload relay is suitable for:
Industrial motor protection
Motor control panels
Motor starters
Motor control centers
Pumps and fans
Compressors
Conveyor systems
Industrial machinery
OEM control panels
Industrial automation applications
The Siemens thermal overload relay provides reliable protection against sustained motor overload conditions. Its 320–500 A adjustable current setting range allows the protection level to be selected according to the requirements of the motor and application.
By helping prevent prolonged overload operation, the relay supports safer motor operation, reduces the risk of overheating, and contributes to improved equipment reliability.
SB Smart supplies genuine Siemens thermal overload relays, 3UA/3UC motor protection products, SIRIUS components, contactors, motor starters, and industrial automation products for panel builders, OEMs, electrical contractors, system integrators, and industrial customers.
The Siemens 3UA68305F can be sourced through SB Smart with product assistance, availability information, and quotation support.
What is Siemens 3UA68305F?
The Siemens 3UA68305F is a thermal overload relay from the 3UA / 3UC series, designed for protecting motors against sustained overload conditions.
What is the current setting range of 3UA68305F?
The specified current setting range is 320–500 A.
What is a thermal overload relay used for?
It protects motors from prolonged overload conditions that can cause excessive heating and motor damage.
Where can Siemens 3UA68305F be used?
It is suitable for industrial motor control panels, motor starters, MCC systems, pumps, fans, compressors, conveyors, and industrial machinery.
Can the current setting be adjusted?
Yes. The specified setting range is 320–500 A, allowing the overload protection to be configured according to the application.
Where can I buy Siemens 3UA68305F?
You can contact SB Smart for pricing, availability, and quotation assistance for the Siemens 3UA68305F thermal overload relay.
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3UA Series |
| Model Number | 3UA68305F |
| Product Type | Thermal Overload Relay (Heavy Duty) |
| Variant | F |
| Protection Type | Overload + Phase Failure Protection |
| Operating Principle | Bimetal Thermal Mechanism |
| Mounting Type | MCC / Panel Mounted |
| Current Range | ~400 – 630 A (typical 3UA68 frame class) |
| Application | Heavy Industrial Motor Protection |
| Brand | Siemens |
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