Westinghouse Electric AN11PZ1 Thermal Overload Relay

Westinghouse Electric AN11PZ1 Thermal Overload Relay, catalog 644276R, is a protective relay intended for electrical systems operating at up to 600 VAC. The AN11PZ1 model designation identifies the specific relay within Westinghouse's thermal overload lineup, aiding accurate replacement and maintenance in compatible control assemblies. With a 600 VAC rating, this relay is suited for high‑voltage AC circuits where overcurrent protection is required to safeguard equipment and wiring. Using the exact model and catalog number—Westinghouse AN11PZ1, 644276R—helps technicians verify compatibility and locate the correct part in catalogs or inventories, supporting reliable servicing and component substitution in existing installations. Accurate part identification is essential for maintenance workflows and inventory management in industrial settings, and the AN11PZ1/644276R pairing provides a precise reference.