Siemens Sentron 5TT 4 Pole Installation Contactor, 2NO/2NC, 40 A, 4 W, 400 V ac Coil. Pole and Throw Configuration: 4PST. Mounting Style: DIN Rail Mount. Terminal Type: Screw. Width: 90mm. Length: 53.5mm. Depth: 70.7mm. MPN: 5TT5042-2