Square D 0709 Overload Relay Thermal Unit A11.9 (lot of 2)

Square D 0709 Overload Relay Thermal Unit A11.9 (Lot of 2)

The Square D A11.9 Thermal Unit is a melting alloy thermal overload relay designed to protect motors, controllers, and branch circuit conductors from excessive heating due to prolonged overcurrents, including locked rotor currents. This lot includes two units, ensuring reliable performance and backup for your applications.

Key Features

• Full Load Current Range: 8.16 to 8.98 A
• Voltage Rating: 600 VAC
• Trip Class: Class 20 (Standard Trip)
• Mounting Type: Plug-In
• Operating Temperature: 40°C
• Dimensions: 2.6 in L x 1.7 in W x 3.5 in H

Applications

These thermal units are suitable for use in melting alloy thermal overload relays, manual starters, NEMA overload relays, magnetic motor starters, and motor control applications. They provide essential protection by responding to overload current conditions, tripping in 20 seconds or less under such conditions.

Additional Information

The A11.9 Thermal Unit features a manual reset mechanism and is constructed as a one-piece unit. Under overload conditions, the heat generated causes a special solder to melt, allowing a ratchet wheel to spin freely, thus opening the control circuit contacts and disconnecting the motor contacts.

Ensure your motor control systems are safeguarded with the reliable performance of the Square D A11.9 Thermal Units.