Ceramic PTC circuit-protection thermistors combine a high voltage rating with low resistance. Series CL20 provides an alternative to fixed resistors and is optimized for inrush current limiting in heater applications, precharge circuits, degaussing circuits, and overcurrent protection. The line offers voltage ratings up to 1200 VDC and maximum energy ratings to 600 J. The devices offer five resistance values at 77°F (25°C) from 7 to 100 W, with tolerance down to 25 percent, to accommodate many precharge times. The resistance values remain unchanged over the operating temperature range of -40 to 230°F (-40 to 110°C).