Schneider Electric Square D™ TeSys™ K Auxiliary Contact Block, Instantaneous Normal Environment, Series: LA1, 575 VAC, 10 A, <=400 Hz Frequency, 2 Contacts, >10 MOhm Contact Resistance, Screw Clamp Tip, Front Clip-On Mounting, -25 to 50 deg C Operating, Environmental Conditions: -50 to 80 deg C Storage Temperature, For Use With: TeSys™ K LA1 Contactor, Control Relay and Reversing Contactor, 35 mm D Dimensions,