Unfortunately, the specific model TA951F does not directly correspond to a readily identifiable product within ABB’s current motor protection relay portfolio based on available public information.

It’s possible that:

• It’s an older or obsolete model: ABB has a vast history of industrial equipment, and information on very old or discontinued models can be limited in current documentation.
• It’s a regional or highly specific variant: Some product designations might be specific to certain markets or OEM customers.
• There’s a slight misidentification of the model number.

However, the “TA” prefix in ABB’s nomenclature often relates to thermal overload relays. Based on this, we can infer some general characteristics of what a TA951F might have been:

Likely Characteristics of an ABB “TA” Series Thermal Overload Relay (Based on Common Features)

1. Protection Function: Primarily designed to protect electric motors against overload and phase failure. They operate on the bimetallic strip principle, where excessive current causes the strips to bend and eventually trip a contact, interrupting the motor’s power supply.

2. Adjustable Current Range: Thermal overload relays typically have an adjustable current range to match the full load current of the motor being protected. The “951” part of the model number might have indicated a specific current range.

3. Trip Class: They are often classified by their tripping characteristics (e.g., Class 10A, 10, 20), which define the time it takes for the relay to trip under overload conditions.

4. Manual/Automatic Reset: Many thermal overload relays offer both manual and automatic reset options after a trip.

5. Test Function: A test button is often included to simulate a trip condition for functional verification.

6. Trip Indication: A visual indicator usually shows when the relay has tripped.

7. Auxiliary Contacts: They often include auxiliary contacts (normally open and/or normally closed) for signaling the tripped state to control circuits.

8. Mounting: Typically designed for direct mounting onto ABB contactors of a specific frame size.

Potential Application Scenarios (If TA951F was a Thermal Overload Relay)

The TA951F would likely have been used in conjunction with an ABB contactor to provide comprehensive motor protection in applications such as:

• Direct-on-line (DOL) motor starters.
• Star-delta motor starters.
• Protection of pumps, fans, compressors, and other motor-driven equipment.

Related Product Combination Solutions (If TA951F was a Thermal Overload Relay)

It would have been typically paired with ABB contactors like:

• AF series contactors
• A series contactors

And potentially used with other motor control components such as:

• Manual motor starters
• Circuit breakers

Installation, Maintenance, and Full-Cycle Support (General for ABB Thermal Overload Relays)

Installation involves mechanically mounting the relay onto the appropriate contactor and making electrical connections according to wiring diagrams. Setting the current range to match the motor’s full load current is crucial. Maintenance is generally minimal, involving periodic checks for proper operation. ABB provides extensive documentation and support for their motor protection products through their global network.

To get precise information about the TA951F, I recommend trying the following:

• Check the specific equipment or system where the component is installed for any additional markings or documentation.
• Consult any existing maintenance logs or spare parts lists for the equipment.
• Contact ABB’s technical support directly, providing them with the model number TA951F and any other relevant details you might have. They may have records of older or specialized products.

While I cannot provide specific details for the TA951F without more information, I hope this general overview of ABB thermal overload relays is helpful.