The 601-GP-04PSB is a 4-pole open-back terminal block designed for industrial and commercial wiring applications. It is rated for 20 A continuous current with 300 V AC/DC (UL 1059 Class B) and features a short-circuit current rating of 10,000 A. The block accommodates copper wire sizes #12 to #22 AWG with a wire binding screw, spaced at 7/16" centers, and requires an application torque of 9 in. lbs. The insulator base is phenolic with an operating temperature range of -40°C to +150°C and a UL 94V-1 flammability rating, while the brass eyelet connectors are nickel-plated for corrosion resistance. This terminal block is UL recognized, CSA certified, CE compliant, and RoHS compliant, making it suitable for factory and field wiring in commercial appliances and control systems.