9065TR8 - Square D Thermal Overload Relay

9065TR8 - Square D Thermal Overload Relay

Protect your motors and control circuits with the Square D 9065TR8 Thermal Overload Relay, designed to provide dependable, adjustable protection within NEMA motor starter systems. This thermal overload relay helps prevent motor overheating and current overloads by sensing excess heat and interrupting power until a manual reset is performed. Built to match the original specifications you expect for legacy industrial electrical equipment, the 9065TR8 is a functional choice for service panels, control enclosures, and motor starter applications where simple, field-proven thermal protection is required.

Key Features and Benefits

• Thermal motor protection: Helps prevent motor damage from overheating and electrical overload by interrupting current when temperatures exceed set thresholds.
• Adjustable trip range: Easily configure the thermal trip setting to match the full-load amps (FLA) of the motor you are protecting.
• Manual reset only: After a trip event, a manual reset is required — keeping the circuit open until intentional restart. This can support safer operations in applications where automatic restarting isn’t desired.
• Fits standard starter systems: Works with compatible Square D contactors and NEMA motor starter panels, making it a straightforward replacement or service part.
• Compact size: Designed to fit within typical control enclosures without taking up excess space.

Technical Specifications

• Product Type: Thermal Overload Relay (manual reset)
  
• Trip Class: Typically Class 10 (trip curve varies by load and application)
  
• Reset Style: Manual reset mechanism
  
• Mounting: Direct-mount to matching Square D contactors/starters
  
• FLA Range: Adjustable to match labeled amp calibration
  
• Voltage Rating: Rated up to 600 VAC when installed in a properly rated NEMA starter
  
• Auxiliary Contact: Includes normally-closed auxiliary trip contact
  
• Series: Part of the 9065 Series
  
• Approximate Weight: 0.5–1.0 lbs
  

Material Compliance and Certifications

• UL Listed & CSA Certified: Meets key North American safety standards for thermal overload protection.
• Built to specification: Manufactured in line with original Square D design standards for this type of control component.
• Industry norms: Conforms to safety and electrical industry requirements for motor control devices.

Where It Works Best

• The Square D 9065TR8 fits into a range of industrial and commercial control systems where reliable thermal overload protection is needed without automatic restart. It’s commonly found in HVAC control panels, pump stations, conveyor systems, general-purpose motor starter enclosures, and similar installations. Because it requires a manual reset after a trip, it’s especially useful in environments where restarting a motor automatically could create a hazard or result in unintended operation.