# ABB REF543KM129AAAB Feeder Terminal Relay - Automation

Experience superior performance with the **ABB REF543KM129AAAB Feeder Terminal Relay**, a crucial component in modern industrial automation systems. Designed by **ABB Oy Distribution Automation**, this relay ensures reliable operation and efficient control within feeder protection applications. It is engineered for optimal performance in diverse environments, making it ideal for upgrading existing systems or integrating into new installations. This relay offers exceptional durability and longevity, ensuring your automation processes run smoothly and effectively.

This **ABB Feeder Terminal Relay** boasts impressive technical specifications. It operates with a Uaux voltage range of 110-240VAC and 110-220VDC. The **FN frequency** is 50/60Hz, and the **U voltage** is 110-120V, with an **I current** ranging from 1/5A to 02/1A. These specifications highlight the relay's versatility and adaptability, ensuring it meets the stringent demands of various industrial applications. The relay is built to the highest quality standards, guaranteeing durability and longevity.

Key Features:

-   **Reliable Performance:** Ensures consistent and dependable operation in critical applications.
-   **Versatile Compatibility:** Adaptable to a wide range of power sources and frequencies.
-   **Durable Construction:** Built to withstand demanding industrial environments.
-   **Enhanced Efficiency:** Optimizes automation processes for improved productivity.
-   **Easy Integration:** Designed for seamless integration into existing systems.

Specifications:

Uaux voltage: 110-240VAC, 110-220VDC  
FN frequency: 50/60Hz  
U voltage: 110-120V  
I current: 1/5A to 02/1A

The **ABB REF543KM129AAAB** is a testament to **ABB's** commitment to quality and innovation. Invest in this feeder terminal relay to enhance the reliability and efficiency of your industrial or automation systems. For any inquiries, please contact us at [info@ramautomations.com](mailto:info@ramautomations.com).

## Details

- **Price:** 999.0 USD
- **Vendor:** ABB
- **Type:** Industrial Automation > Relays > Feeder Terminal Relay
- **Tags:** 110-220VDC, 110-240VAC, ABB, ABB REF543KM129AAAB, Automation, Distribution Automation, Feeder Terminal Relay, Industrial Relay

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| REF543KM129AAAB / USED | 999.00 USD | In stock |

## Images

- ABB REF543KM129AAAB Feeder Terminal Relay - Automation-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/abb-ref543km129aaab-feeder-terminal-relay)
> Updated: 2026-10-01