Disconnect and test terminal blocks are specifically designed for use with measuring, control ,and regulatory circuits and feature socket-headed screws that have been precision-designed to act as test monitoring points. Circuits can be isolated for testing and repair without disconnecting wires. Test blocks are offered in three different designs. ATSA6 & ATSB6 utilize a screwdriver-actuated slide link to make and break connections. The ATSC4 features a lever-operated knife contact. Lastly, the ATSD6 incorporates a hinged connecting link. Disconnect and test blocks are available in wire gauges of 22-8 AWG with pitches ranging from 6mm – 16mm. Voltage ratings are up to 800 V and current ratings are up to 41A. Please check the customer drawings or website for CSA, VDE, and UL approval.