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Omron K8DS-PH1 Phase Sequence and Phase Loss Monitoring Relay — front view

Omron K8DS-PH1 Phase Sequence and Phase Loss Monitoring Relay

SKU: K8DS-PH1

USD 11.00

Omron K8DS-PH1 is a phase sequence and phase loss monitoring relay for three-phase power protection.

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Product Overview

The K8DS-PH1 provides a practical interface between controller outputs and field loads. In high-cycle or uptime-sensitive applications, this class of component supports cleaner switching behavior, reduced wear concerns, and easier panel-level standardization.

Controller-to-Load Interface Reliability

Relay/SSR devices isolate control electronics from field-side switching demands and provide a practical interface layer in mixed-load control systems.

High-Cycle Switching Practicality

For frequent switching duty, proper relay/SSR selection improves panel reliability and can reduce maintenance compared with under-rated or mismatched alternatives.

Panel Standardization Benefits

Using consistent relay/SSR classes across equipment simplifies wiring conventions, spare inventory, and technician troubleshooting workflows.

Key Features

  • Supply Voltage: Three-phase 200-480VAC
  • Monitoring: Phase sequence, phase loss, undervoltage
  • Output: SPDT relay
  • Mounting: DIN rail
  • Operating Temperature: -10 to +55°C
  • SKU: K8DS-PH1
  • Series: K8DS
  • Voltage: 200-480VAC

Best-Fit Applications

  • Isolates controller outputs from field loads
  • Provides reliable switching for control branches
  • Supports higher cycle operation with proper selection
  • Improves panel maintainability and spare planning
  • Reduces unplanned downtime from contact wear issues
  • Enables cleaner wiring architecture in control cabinets

Buying Checklist

  • Practical controller-to-load interface
  • Supports high-duty panel switching
  • Improves reliability with proper sizing
  • Aids standardization of control wiring
  • Strong lifecycle service value

Technical Specifications

Model K8DS-PH1
Series K8DS
Type Phase Sequence and Phase Loss Monitoring Relay
Supply Voltage Three-phase 200-480VAC
Monitoring Phase sequence, phase loss, undervoltage
Output SPDT relay
Mounting DIN rail
Operating Temperature -10 to +55°C

FAQ for K8DS-PH1

What does this relay monitor?
Three-phase power for phase sequence (rotation), phase loss, undervoltage. Protects three-phase motors and equipment.
Why is phase sequence important?
Wrong phase sequence causes motors to rotate in wrong direction. Can damage equipment. Relay detects and prevents wrong sequence.
Does this relay provide alarm output?
Yes, SPDT relay output for alarm or shutdown. Prevents equipment start on power fault.
Can this relay auto-reset?
Check model specifications. Some models auto-reset, some require manual reset.

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