These contactors are of the block type design with 3 main poles and 1 built-in auxiliary contact – control circuit, AC operated – add-on auxiliary contact blocks for front or side mounting and a wide range of accessories. * MFR PART #:1SBL921074R8810 * Number of auxiliary contacts as normally closed contact:0 * Number of auxiliary contacts as normally open contact:1 * Number of main contacts as normally open contact:3 * Number of normally closed contacts as main contact:0 * Rated control supply voltage Us at AC 50HZ:230...240 V * Rated control supply voltage Us at AC 60HZ:240...260 V * Rated operation current Ie at AC-1, 400 V:27 A * Rated operation current Ie at AC-3, 400 V:18 A * Rated operation power at AC-3, 400 V:9 kW * Type of electrical connection of main circuit:Screw connection * Voltage type for actuating:AC