The combination "NU8976a HIER466665R9 ABB" likely represents two separate ABB products or components based on the code format and ABB's product naming conventions:

**1. NU8976a:**

* This is likely an ABB product code for a specific item. Due to the lack of a clear category identifier within the code itself, pinpointing the exact product details and specifications might be challenging.

**2. HIER466665R9:**

* This follows a format commonly used by ABB for serial numbers. It identifies a unique instance of a particular ABB product model.

Here's how you can approach finding information for each:

**Finding Details for NU8976a:**

* **ABB Website Search:**
    * Visit the ABB website: [https://new.abb.com/](https://new.abb.com/)
    * Search for "NU8976a" using the search bar. ABB's product pages might provide information on the product line or category that NU8976a belongs to, even if the specific variant details aren't available.
* **ABB Product Catalogs:**
    * If you have access to ABB's product catalogs or brochures (online or physical copies), look for NU8976a or similar codes within relevant product sections. This might give you a better idea of the product type.

**Finding Information for HIER466665R9 (Serial Number):**

* **Contact ABB Support:**
    * As the HIER code appears to be a serial number, contacting ABB support directly might be your best option. Provide them with the complete code "HIER466665R9" and explain that you're looking for information about a specific ABB product with this serial number. ABB might be able to provide details about the product model, manufacturing date, or relevant specifications based on the serial number.

**Additional Tips:**

* If you have any context regarding where you encountered these codes (e.g., a parts list, a system manual), mentioning that to ABB support or during your online search can provide valuable context.
* Consider searching online forums or communities focused on ABB industrial automation systems or specific ABB product lines. There might be discussions where users share information about ABB products based on code prefixes or serial number formats.

By following these steps, you should hopefully be able to find more details about the ABB products or components identified by the codes NU8976a and HIER466665R9.