ABB – 1SAZ721201R1035 – TF42-4.2 Thermal Overload Relay, 3.1–4.2 A, 3-Pole

The ABB TF‑. (SAZR) is a ‑pole thermal overload relay offering reliable motor protection with adjustable trip current, phase‑loss sensitivity, and automatic or manual reset. It features a trip‑free mechanism, IEC trip class rating, and both signal (NO) and trip (NC) auxiliary contacts, suitable for use with AF‑series contactors in industrial control panels.

Key Features:

• Part / Model: SAZR (TF‑.)  

• Current Setting: .–. A, adjustable via front dial  

• Poles: ‑Phase protection with NO + NC auxiliary contacts  

• Trip Class: Class , includes temperature compensation & phase‑loss detection  

• Reset Modes: Front dial allows automatic, manual, or STOP/test function  

• Mounting: Directly attaches to AF–AF contactor series,  mm width, IP  

• Certifications: IEC/EN ‑‑,  kV impulse withstand, ATEX, UL/cUL  

• Temperature Range: − °C to + °C; power loss ~ W/pole