ABB CR324 Solid-State Overload Relays

ABB CR324 Solid-State Overload Relays provide reliable overload protection for industrial motors. These ABB solid-state relays support applications up to NEMA Size 6 and accommodate currents up to 540A. With panel mount adapters, the current limit is 135A. The CR324 relays are fully equipped for use on control panels and feature an adjustable full-load current setting and selectable trip classes.

Features

  • 2:1 adjustable full-load amps with tactile feedback dial
  • Selectable 10/20/30 protection class
  • Motor overload and phase-loss protection
  • Up to NEMA Size 6
  • Up to 540A maximum current rating (135A current limit with panel-mount adapters)
  • 250A to 1600A maximum breaker rating

Applications

  • Industrial control
  • Industrial automation
  • Material handling
  • Motor starters
  • Industrial pumping systems
  • Fans and blowers

Top-Face Controls & Features

Block Diagram - ABB CR324 Solid-State Overload Relays

Typical 3-Phase Wiring Diagram

Application Circuit Diagram - ABB CR324 Solid-State Overload Relays
Inilathala: 2026-07-06 | Na-update: 2026-07-17