ABB 
Contactors, Circuit Breakers, Switches and Softstarters

Blockmaster
Connectors & Terminal Blocks

Custom Connector (Full Catalog 5.5mb)
Terminal Blocks and Relay Sockets

Entrelec
Rail Mounted Terminal Blocks, PLC, Interface, Relays, and Connectors

GC\Waldom
Switches, Connectors and Hardware

JKL
Lamps and LED's

National Controls Corporation
Time Delay Relays, Timers, and Dust Collector Controls

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NTE
Semiconductors, I/C's, Resistors, Capacitors, and Potentiometers,

P-Tec
LED's, LCD's, and Arrays

Telco
Photo Electric Sensors

Turck 
Inductive, Capacitive, and Ultra-Sonic Sensors