The RL4504-3.28-59-S34 from Amphenol Advanced Sensors/Thermometrics is NTC inrush current limiter with 5 Ohms (R @ 25°C), ±25% tolerance, 4.7A current rating and 120 mOhms (R @ current). This current limiter has 0.550" (13.97mm) diameter and 0.328" (8.33mm) lead spacing. Wide operating temperature range -50 to 175°C.