Industrial 320-B5U97 Programmable Logic Controller

The 320-B5U97 is a five‑frame bimetallic overload relay from C3 Controls’ Series 320, engineered to protect motors in single‑ and three‑phase circuits with Trip Class 10 protection and phase‑loss protection for three‑phase motors. It offers a current adjustment range of 0.28 to 112 A, a trip‑test function standard across 320‑B2 to B5 models for easier installation and troubleshooting, and features electrically isolated contacts with 1 normally open and 1 normally closed auxiliary contact. Designed for rugged, straightforward installation, it includes IP20 guarded terminals with dual terminal markings, an integral stop button, and direct mounting capability to simplify mounting and reduce installed costs. With five frame sizes in the Series 320 family, the 320‑B5U97 covers a broad spectrum of motor ratings and mounting configurations, while ambient temperature compensation enhances reliable operation across varied industrial environments.