The T-4 is a 4-pole, heavy-duty barrier style terminal block designed for high-pressure solderless connections. It is rated for 125A and 600V, featuring tubular copper connectors with headless slotted screws that accept wire sizes from No. 6 AWG to No. 1/0 AWG. The block requires a tightening torque of 50 in-lb and is constructed from a phenolic housing material rated for continuous use up to 150°C. It is ideal for applications requiring heavy load termination, such as in machinery, switchboards, and branch circuits.