Eaton selective coordination tools

National Electrical Code requirements for selective coordination are mandatory for certain electrical systems where maximum reliability of power is critical. The materials included in this section provide insight into the relationship between selective coordination, system reliability, and life safety. The reasoning for why selective coordination is mandatory. This excerpt from Bussmann Division's SPD covers basic and advanced topics related to system coordination.

Information is presented as an aid to understanding selective coordination of overcurrent protective devices. Articles on Selective Coordination including third-party articles published in IAEI News and the necdigest provide important insight into the requirements and design of selectively coordinated systems, and the electrical systems where they are required. Detailed information on these systems and the Code requirements can be found in this document.

Available with up to Amps for a Vac or less system with up to kA SCCR, this panelboard features ampacity rejecting branch circuit disconnects up to amps. This application note contains tested fuse and circuit breaker combinations that deliver selective coordination between downstream Bussmann series fuses and upstream Bussmann series fuses and Eaton circuit breakers.

This document covers all the relevant Code sections and how to comply with all Selective Coordination requirements.

This article addresses the role of the overcurrent protective device in system reliability. A coordination study requires considering many electrical system components. This sample study covers fuses, transformers, conductors, and others. Why selective coordination is mandatory National Electrical Code requirements for selective coordination are mandatory for certain electrical systems where maximum reliability of power is critical. The NEC clearly defines two distinct levels of coordination; Selective Coordination for all currents and times and Coordination to 0.

Selective coordination is required for systems related to life safety as defined in NFPA 70 - the NEC , and is achieved when an overcurrent on a circuit is interrupted and only the closest upstream device opens such that only the section of the electrical system with a problem is taken offline.

Selective coordination applies for the full range of overcurrent on the system and the full range of overcurrent interrupting times associated with those overcurrents. Coordination is required for over current protective devices for Essential Electrical Systems in healthcare facilities.

The overcurrent protective devices must be coordinated for any fault time extending beyond 0. Essential Electrical Systems are comprised of life safety branch, critical branch, and equipment branch. Once defined, a selectively coordinated solution must be found between system devices according to manufacturer time-current-curves and selective coordination tables.

Eaton's Selective Coordination Designer v1. Eaton is the only manufacturer that offers both fuse and circuit breaker solutions. This includes tested combinations of Bussmann series fuses with upstream Eaton circuit breakers that provide designers greater flexibility in creating efficient selective coordination solutions for their projects.

We also offer technical expertise and a support structure to help achieve your project goals, whether facing new construction, expansion or renovation. Fuse-to-Fuse and Fuse-to-Upstream circuit breaker selective coordination tables.

Selective coordination tables of tested fuse to upstream fuse and fuse to upstream circuit breakers for use in achieving selective coordination in a building's electrical system. Electrical safety and reliability: Selective coordination. This document provides coordination tables for fully fused systems as well as instructions and tables for systems with upstream Eaton circuit breakers and downstream Bussmann series fuses.

Selective coordination section begins on page 9 of this document. Selective Coordination KB. In order to apply circuit breakers to meet selective coordination requirements, Eaton provides the following guide to easily select breakers for various fault current values at the load side circuit breaker. This document utilizes information contained in IAE for selectively coordinated circuit breakers. The selective coordination values shown are based on Eaton test data.