UT-MTL Knife Disconnect Terminal Blocks Phoenix Contact UT-MTL Knife Disconnect Terminal Blocks feature a quick and safe finger-actuation mechanism for test and measurement applications. The UT 4-MTL (26AWG-10AWG) and UT 6-MTL (24AWG-8AWG) accommodate colored knife disconnect levers to help with visual circuit identification. The finger levers enable technicians to safely perform circuit-polarity checks and troubleshooting without disrupting service. Phoenix Contact UT-MTL Knife Disconnect Terminal Blocks help reduce costs by the use of common acceptable CLIPLINE complete accessories and marking products.