This part is a kind of semiconductor called 3UA7010-1B.

Function of this product has Overload Relays.

Manufacturers : Siemens

Image and pinout :

Some of the text within the PDF file :

SIMICONT® Overload Relays 3UA7 Bimetallic Overload Relays Selection Ordering Information 3UA70 21 and 3UA70 11 overload relays with ᮣ Class 10 tripping characteristics ᮣ 1 NC trip contact ᮣ 1 NO isolated alarm contact ᮣ RESET-STOP button ᮣ Trip indicator ᮣ TEST button ᮣ Phase loss and unbalanced load protection 3UA70 20 and 3UA70 10 overload relays with ᮣ Class 10 tripping characteristics ᮣ Contact arrangement 1 NC ᮣ RESET-STOP button ᮣ Phase loss and unbalanced load protection ᮣ Accessories see below. For Direct Mounting to 3TF2 and 3TD2 contactors Illustration Contactor Type Setting Rangeቢ A 3UA7020 3TF2, 3TD2 0.1–0.16 0.16–0.25 0.25–0.4 0.4–0.63 0.63–1 0.8–1.25 1–1.6 1.25–2 1.6–2.5 2–3.2 2.5–4 3.2–5 4–6.3 5–8 6.3–10 For [ ... ]

3UA7010-1B PDF Datasheet Download