ABB TA924F Virtual coupler module

Description

ABB TA924F Virtual coupler module

The ABB TA924F is a thermal overload relay designed for the protection of three-phase and single-phase AC motors against thermal overload. It is typically used in conjunction with contactors to form a motor starter. It belongs to the ABB T series of thermal relays.

📋 Product Parameters (Specifications)

Note: The exact current setting range is critical and depends on the full part number (e.g., TA924FU-XX). Always consult the specific datasheet for the installed relay.

⭐ Product Advantages

• Reliable Motor Protection: Provides robust and dependable protection against overheating caused by mechanical overload, phase failure, or unbalanced voltage/current.

• Temperature Compensation: Ensures consistent tripping characteristics over a wide range of ambient temperatures.

• Trip Indication: Clear visual indication of a tripped state, simplifying fault finding.

• Phase Loss Sensitivity: Designed to protect motors even in the event of phase failure, which can quickly lead to motor burnout.

• Easy Integration: Designed for direct, screwless mounting onto ABB A-series contactors, saving space and wiring time.

• Selectable Reset: Offers both Manual and Automatic reset modes for operational flexibility.

⚠️ Precautions (Important Notes)

• Sizing: Crucially, the thermal relay must be sized correctly. The motor’s rated current on the nameplate must fall within the adjustable range of the TA924F.

• Wiring: Always ensure that all three phases of the motor current pass through the main poles of the relay. The auxiliary contacts must be wired correctly into the contactor’s coil circuit (NC contact) and often a signaling circuit (NO contact).

• Setting: The current setting dial must be set precisely to the rated operational current ($\boldsymbol{I_e}$) shown on the motor nameplate.

• Installation: Disconnect all power before installing or performing maintenance on the relay. Ensure compliance with local electrical codes and standards.

• Testing: It is good practice to test the tripping function periodically using the built-in “TEST” button to ensure mechanical functionality.

🔌 Product Applications

The ABB TA924F is a fundamental component in industrial and commercial electrical systems wherever AC motors are used.

• Pumps and Ventilation Systems: Protecting motors driving water pumps, HVAC fans, and blowers from sustained overload.

• Conveyor Systems: Used in manufacturing and logistics to protect motor starters against jams or excess load on conveyor belts.

• Compressors: Safeguarding compressor motors in refrigeration and industrial air systems.

• Machine Tools: Incorporated into the control circuits for lathes, milling machines, and other motorized equipment.

• General Machinery: Any application requiring reliable thermal protection for standard three-phase AC induction motors.

Shipping Port: Xiamen, China

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