# E. Dold Sohne Undervoltage Relay AA9943.11 001 – 440V Protection

The **E. Dold Sohne** Undervoltage Relay **AA9943.11 001** provides reliable protection for electrical systems against undervoltage conditions. Ideal for industrial automation and marine applications, this relay ensures your equipment is safeguarded from voltage drops, preventing costly damage.

This **undervoltage relay** is designed for 3-phase AC systems operating at 440V and 50-400Hz. It handles AC-15 230V 3A and AC-15 230V 1A loads, offering essential protection. The L1, L2, L3 connections provide seamless integration, making it a dependable choice for your control systems.

**Key Features:**

-   **Reliable Undervoltage Protection:** Prevents damage from voltage drops.
-   **Wide Compatibility:** Suitable for 3-phase AC systems.
-   **Easy Installation:** Simple L1, L2, L3 connections.
-   **Durable Construction:** Ensures long-lasting performance.
-   **Versatile Use:** Ideal for industrial and commercial applications.

**Specifications:**

-   Voltage: 440V
-   Frequency: 50-400Hz
-   AC-15 Load: 230V 3A / 230V 1A
-   Weight: 310 gm

Trust **E. Dold Sohne** for superior performance and protection. The **AA9943.11 001** **Undervoltage Relay** is a dependable solution for safeguarding your electrical systems. Secure your equipment today and ensure optimal performance in all your applications.

Also our company name is Ram Automations and also you can contact us on email info@ramautomations.com

## Details

- **Price:** 999.0 USD
- **Vendor:** Ram Automations
- **Type:** Industrial Automation > Control Systems > Undervoltage Relays
- **Tags:** 440v-protection, aa9943.11-001, e-dold-sohne, industrial-automation, undervoltage-relay, voltage-monitoring

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Used | 999.00 USD | In stock |

## Images

- E. Dold Sohne Undervoltage Relay AA9943.11 001 – 440V Protection-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/e-dold-sohne-aa9943-11-001-relay)
> Updated: 2026-09-19