In electric power systems and industrial automation, ANSI Device Numbers can be used to identify equipment and devices in a system such as relays, circuit breakers, or instruments.

The ANSI standard device numbers ( As per ANSI/IEEE standard C37.2) are used in the design of an electrical power system. These devices protect the electrical network in the case of a …

ANSI Standard Device Numbers & Common Acronyms ANSI Standard Device Numbers & Common Acronyms

These types of devices protect electrical systems and components from damage when an unwanted event occurs, such as an electrical fault. Device numbers are used to identify the …

Read about ANSI/IEEE Function Number Codes (Electric Power Measurement and Control Systems) in our free Automation Textbook

Comprehensive list of ANSI device numbers used in electrical protection systems. Learn about relay and circuit breaker functions.

Approved by the American National Standards Institute (ANSI), the NEC is the most complete set of electrical Code requirements that govern electrical installations in the interest of safety for …

Jan 1, 2023 · In the design of electrical power systems, the ANSI standard device numbers show the parts of a protective device like a relay or circuit breaker. These kinds of devices protect …

This document lists ANSI standard device numbers and common acronyms used in power systems. It provides suffixes and descriptions for device numbers indicating what types of …

Dec 15, 2025 · Master reading electrical symbols with our 2025 Engineer's Guide. Detailed IEC vs ANSI comparison for resistors, grounds & active components. [Download Cheatsheet].