TechnicalResources
Selection guides and engineering tools for motor starters and switchgear
Selection Guides
Download PDF guides for contactor and relay sizing.
GE Direct On-Line Starter Selection Guide
Contactor and thermal overload relay sizing tables for DOL starters across 230 V to 1000 V, covering motor ratings from 0.06 kW to 250 kW.
GE Star-Delta Starter Selection Guide
Contactor set and thermal overload relay sizing tables for star-delta starters across 230 V to 1000 V, with application diagrams and torque/current curves.
ABB Online Tools
Web-based engineering tools for protection and selectivity.
ABB Motor Protection Selection
Select the correct motor protection relay for your application based on motor rating, voltage, and protection requirements.
ABB Selectivity Tool
Verify discrimination between upstream and downstream protective devices to ensure only the faulted circuit is isolated.
ABB Backup Protection Selection
Determine correct backup protection coordination between circuit breakers and fuses for short-circuit fault scenarios.
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