The Moeller Wiring Manual
Automation Systems
Electronic motor starters and drives
Command and signalling devices
Rotary Switches
Overview
ON-OFF Switches, Main Switches, Maintenance Switches
Changeover Switches, Reversing Switches
(Reversing) Star-Delta Switches
Multi-Speed Switches
Interlock Circuits
Single-Phase Starting Switches
Voltmeter selector switches
Ammeter selector switches
Meter Selector Switches
Heater Switches
Step Switches
Rotary Switches and Switch-Disconnectors with ATEX Approval
Contactors and Relays
Motor-protective circuit-breaker
Circuit-breakers
All about Motors
Specifications, Formulae, Tables
Alphabetical index
Meter selector switches enable you to measure currents, voltages and power in three-phase systems with only one measuring device.
Numerous circuits are possible for the different measurements, some of the most common ones being shown below.