The automatic switches are similar in construction to, use the same accessories, and offer the same connection possibilities as the J-Frame circuit breaker version. The switches have a factory set, nonadjustable trip point calibrated to protect the molded case switch. PowerPacT J-Frame switches are available in unit mount, I-Line, plug-in, or drawout versions. This switch has terminal nuts on the line side and lugs on the load side. This PowerPacT J, 250A, 3 pole, automatic switch has a short circuit withstand current rating of 18kA at 600VAC. PowerPacT J automatic switches comply to UL and CSA standards.