Mitsubishi TH-N220RHKP 180A Description Description Mitsubishi Overload Relay. Ith = 140,0 ~ 220,0A; for S(D)-N220 Related products MITSUBISHI FR-A540-0.75K-EC MITSUBISHI FR-A540-22K Mitsubishi FX2N-48ER-DS MITSUBISHI FX1N-40MR-DS Mitsubishi FX2N-32ER-ES/UL MITSUBISHI MDS-A-SPJ-22