Phase Failure Phase Sequence Relay, Plug-In 11 Pin

The A-PFPSR Phase Failure Phase Sequence Relay checks that all three supply phases are present and in the correct rotational sequence before energising, protecting equipment from running on an incomplete or incorrectly phased supply. It is suitable for electricians and panel builders needing basic phase presence and sequence checking. Note this is not a motor control phase failure relay.

• Application: Phase presence and sequence checking on 3-phase supplies
• Energise delay: Approx. 1 second after power is applied
• Indication: LED illuminates when phase sequence is correct
• Mounting: Plug-in, 11 pin base

Key Features

• Only energises when all 3 phases are present and correctly sequenced
• LED confirms correct sequence; if unlit, swap any 2 phases on terminals 5, 6 and 7 to correct
• Approx. 1 second energise delay after power-up avoids false readings during switch-on
• Standard 11 pin plug-in format for straightforward panel fitment

Typical Applications

• 3-phase supply presence/sequence checking
• Panel builder phase verification circuits
• General industrial phase monitoring
• Pre-commissioning phase sequence checks

Technical Specifications

What's Included

• 1 x A-PFPSR Phase Failure Phase Sequence Relay

Please note: 11 pin relay base/socket is not included unless specifically listed above.

Installation & Compatibility Notes

• This is a phase presence/sequence checking relay, not a motor control phase failure relay — confirm suitability for your application before ordering.
• Confirm supply voltage required — available in multiple voltages.
• Installation should be carried out by a suitably qualified electrician where required.

Warranty & Support

This product is supplied with the applicable manufacturer or supplier warranty, subject to correct installation, correct application, and warranty terms.

Zisabo supplies quality plumbing, pump, filtration and electrical products with practical support to help customers choose the correct item for their application. If you are unsure whether this product is suitable, contact us before ordering and our team will assist where possible.

Need help choosing? If you are unsure whether this product is suitable for your system, contact Zisabo with your application details, voltage, current rating, pin/base configuration or installation environment, and we will assist where possible.