These 3 pin screw terminals are a good all around choice for modular connections. The terminals are 3 pins wide and are designed to connect together to form a solid bank of any length. It can also be combined with the 2 Pin variety.

Manufacturer: 4uCon
Max Ratings: 125V 10A
Contact Resistance: 20mΩ
Wire Range: 16-26AWG
Color: Blue

For more specifics, please see the data sheet below.