MX200 Theta-J Corp. Solid State Relay Optical Isolator 500V 1.5A 240VRMS 2-48VDC 1.5A @ 240Vrms Load. Up for sale are Theta-J solid state relays P/N: MX200. This Buy It Now is for 1 relay. 500V Isolation. Inquire for quantity pricing. Local pickup is also available. byJuly 5, 2026