# Selec 800Psr Phase Sequence Relay - 154 to 500V AC Protection

The Selec 800Psr Phase Sequence Relay offers reliable protection for your electrical systems. Designed to operate within a supply range of 154 to 500V AC, this relay ensures efficient functioning and enhanced safety in various industrial and commercial applications.

This phase sequence relay features a quick response time and robust protection mechanisms. The **phase failure trip** activates when the voltage drops below 154V AC, safeguarding connected circuitry. A fixed 30V difference is maintained by the **phase imbalance feature** to ensure stable performance. Its lightweight design facilitates easy installation and integration into existing systems.

-   **Wide Voltage Range:** Operates from 154 to 500V AC
-   **Quick Response Time:** Maximum 200ms for efficient protection
-   **Phase Failure Trip:** Protects against voltage drops below 154V AC
-   **Phase Imbalance Feature:** Maintains a fixed 30V difference for stability
-   **Lightweight Design:** Easy to install at only 100 grams

**Specifications:**  
Voltage Range: 154 to 500V AC  
Power On Delay: 200ms  
Response Time: Maximum 200ms  
VA Rating: 20VA  
Supply Options: 3Ø/3W NO/5A, NC/3A, 250V AC, 50/60Hz  
Weight: 100 grams

Rely on the Selec 800Psr Phase Sequence Relay for dependable performance and enhanced safety in your industrial automation systems. Upgrade your protection measures today with this high-quality relay from Selec.

For more information, contact us at [info@ramautomations.com](mailto:info@ramautomations.com)

## Details

- **Price:** 999.0 USD
- **Vendor:** Selec
- **Type:** Industrial Automation > Relays > Phase Sequence Relays
- **Tags:** 800Psr, electrical protection, industrial relay, phase failure, phase sequence relay, Ram Automations, Selec, voltage monitoring, voltage protection

## Variants

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

## Images

- Selec 800Psr Phase Sequence Relay - 154 to 500V AC Protection-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/800psr-phase-sequence-relay-selec)
> Updated: 2026-10-04