ABB SPCJ-4D34-1MYN745605-A Motor Protection Relay

ABB SPAM 150 C motor protection relay, model SPCJ 4D34, with order number 1MYN745605-A, is a multifunction motor protection module designed to sit inside ABB SPAM protection assemblies to guard AC motors from overloads and faults. The SPCJ 4D34 integrates three-phase and neutral current sensing to provide thermal overload protection and additional protections such as phase unbalance and incorrect phase sequence, with a start-up supervision stage that is adjustable. It sets motor full-load current from 0.5 to 1.50 times In and offers a start-up monitoring window adjustable from 2 to 120 seconds, and the protection logic can operate under a definite-time or thermal-stress scheme. Data communication is via fiber-optic serial with an optional bus connection module, enabling integration into ABB protection/control networks for panels, drives, and machines such as pumps, fans, and conveyors. This module is commonly used in industrial control panels to safeguard motor-driven equipment and to provide signaling outputs for control logic and alarms as part of the SPAM 150 C family.