(19)
(11) EP 2 091 060 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.03.2010 Bulletin 2010/12

(43) Date of publication A2:
19.08.2009 Bulletin 2009/34

(21) Application number: 08017805.6

(22) Date of filing: 10.10.2008
(51) International Patent Classification (IPC): 
H01H 61/01(2006.01)
H01H 71/16(2006.01)
 H01H 61/02(2006.01)
H01H 71/74(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 13.02.2008 JP 2008032184

(71) Applicant: Fuji Electric FA Components & Systems Co., Ltd.
Chuo-ku Tokyo 103-0011 (JP)

(72) Inventors:
  • Tatsukawa, Masahiro
    Tokyo 191-8502 (JP)
  • Nakano, Masaaki
    Tokyo 191-8502 (JP)
  • Furuhata, Yukinari
    Tokyo 141-0032 (JP)

(74) Representative: MERH-IP Matias Erny Reichl Hoffmann 
Paul-Heyse-Strasse 29
80336 München
80336 München (DE)

   


(54) Thermally operated overload relay


(57) Disclosed is a thermally operated overload relay installing a linked assembly in an outer casing (1), the assembly comprising a main bimetal (2) that bends receiving heat due to electric current flowing in a main circuit, a shifter (3) that displaces responsively to the bend of the main bimetal (2), a release lever (5) that links to the shifter and opposes a reversing spring (7) for driving a contact switching mechanism (6), and an adjusting dial that positions the release lever corresponding to setting of a trigger current value; output contacts of the contact switching mechanism being switched upon detecting the bend of the main bimetal (2) due to development of an overcurrent. The adjusting dial composed of a slider (14) and is directly coupled to the release lever (5) to form a monolithic structure, and the slider (14) is operated to position the release lever (5) corresponding to setting of the trigger current value and fastened by a fastening screw (15) .







Search report