# Siemens 7UG0818-1CA20 Line Monitoring Relay – 280-500V AC

The Siemens Limited Line Monitoring Relay 7UG0818-1CA20 is engineered for reliable electrical line monitoring in industrial and commercial settings. This relay ensures precision and efficiency in monitoring, making it an ideal choice for maintaining system stability and preventing downtime. Trust Siemens for superior performance in your automation systems.

This line monitoring relay operates within a range of 280-500V AC (L-L) and 160-288V AC (L-N), supporting a supply of 415V AC (L-L) and 240V AC (L-N) at 50/60 Hz. With a VA rating of 50 VA (max) and an AC15 rating of 250V/3A (max 4A GLGG), the **Siemens 7UG0818-1CA20** offers versatile application. It adheres to IEC 60947-5-1 standards, ensuring safety and reliability.

-   **Wide Operating Range:** 280-500V AC (L-L) and 160-288V AC (L-N)
-   **High Performance:** 50 VA (max) power rating
-   **Compliance:** Meets IEC 60947-5-1 standards
-   **Compact Design:** Lightweight at only 130 grams

**Specifications:**  
Voltage: 280-500V AC (L-L), 160-288V AC (L-N)  
Supply: 415V AC (L-L), 240V AC (L-N) at 50/60 Hz  
VA Rating: 50 VA (max)  
AC15 Rating: 250V/3A (max 4A GLGG)  
Weight: 130 grams  
Standard: IEC 60947-5-1

Rely on the Siemens Limited Line Monitoring Relay **7UG0818-1CA20** for consistent, accurate electrical line monitoring. Siemens is a trusted brand in industrial automation, providing dependable solutions for your critical applications. Enhance your system's reliability with this high-performance relay.

For inquiries or support, contact Ram Automations at [info@ramautomations.com](mailto:info@ramautomations.com)

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Power Monitoring > Line Monitoring Relay
- **Tags:** 7UG0818-1CA20, automation components, electrical monitoring, industrial relay, line monitoring relay, power monitoring, Siemens

## Variants

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

## Images

- Siemens 7UG0818-1CA20 Line Monitoring Relay – 280-500V AC-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-7ug0818-1ca20-line-relay)
> Updated: 2026-09-19