Industrial Control & OEM What do SWD and HID rating signify for circuit breakers? How do I wire multiple start/stop pushbutton stations to a motor starter? Why is my coil making a humming noise? What is the blinking light on my Electronic Trip unit? What can cause an SCR failure on a soft starter? Residential & Distribution What is the difference between BR and CH type breakers? What is the difference between Type 1 and Type 2 Surge Protective Devices? What is the difference between CTL and non-CTL breakers? What do SWD and HID rating signify for circuit breakers? What is the difference between a loadcenter and panelboard?

Automation Can't connect to HMi using Windows 7/10, failed USB port COM error easyRelay user manuals and programming guides (easy500, easy700, easy800, MFD) How can I obtain the manual of Durant Timer, model # 45610-400? Where can I find the manual for a Durant Ambassador Series counter ( 5760X-4XX )? How can I connect a PLC if it is not found by the Scan Network in Codesys 3? Drives How do I fix an F7 (Saturation Fault) code for a 9000X Series drive? How do I fix an F11 (Output Phase Fault) code for a 9000X Series drive? How do I fix an F41 IGBT Over Temperature Fault code for a DG1 drive? How do I fix an F51 (Ext Fault) code for a 9000X Series drive? How do I fix an F1 (Over Current Fault) code for a 9000X Series drive?

Sensors What are positive opening contacts? What is a solenoid safety interlock switch? How does a mechanical limit switch work? How does a capacitive proximity sensor work? Will an inductive proximity sensor detect steel behind a layer of aluminum?