EP 3242313 A1 20171108 - ADJUSTABLE THERMAL TRIPPING DEVICE FOR MINIATURE CIRCUIT BREAKER
Title (en)
ADJUSTABLE THERMAL TRIPPING DEVICE FOR MINIATURE CIRCUIT BREAKER
Title (de)
VERSTELLBARER THERMISCHER AUSLÖSUNGSMECHANISMUS FÜR MINIATURSCHUTZSCHALTER
Title (fr)
DISPOSITIF DE DÉCLENCHEMENT THERMIQUE RÉGLABLE POUR DISJONCTEUR MINIATURE
Publication
Application
Priority
- CN 201410853389 A 20141230
- CN 2015096096 W 20151201
Abstract (en)
The present invention discloses a thermal adjustable tripping device for a miniature circuit breaker, which is mounted in a base (101) of the miniature circuit breaker. The thermal adjustable tripping device comprises: a tripping mechanism (106), a thermal deformation element (107) and an adjusting mechanism (102). The tripping mechanism is provided with an extending tripping rod (161). The thermal deformation element is arranged close to the tripping rod and a gap is reserved between the thermal deformation element and the tripping rod. The adjustment mechanism adjusts a distance of the gap between the tripping rod and the thermal deformation element. A current in a loop accessed by the miniature circuit breaker enables the thermal deformation element to generate heat and deform, and the deformed thermal deformation element moves towards the tripping rod, contacts with the tripping rod and pushes the tripping rod to trigger the tripping mechanism to trip. The adjusting mechanism adjusts the distance between the thermal deformation element and the tripping rod so as to adjust a setting current in the loop. The present invention uses a rigid element to adjust a distance between a thermal deformation element and a tripping rod, which can ensure that the distance between the thermal deformation element and the tripping rod is constant in each operation. The tripping device of the present invention is applicable to an electric motor.
IPC 8 full level
H01H 71/14 (2006.01); H01H 71/74 (2006.01)
CPC (source: CN EP)
H01H 71/14 (2013.01 - CN); H01H 71/16 (2013.01 - CN); H01H 71/7427 (2013.01 - EP); H01H 71/7436 (2013.01 - CN); H01H 71/162 (2013.01 - EP); H01H 2071/7454 (2013.01 - EP); H01H 2071/7481 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3242313 A1 20171108; EP 3242313 A4 20180704; EP 3242313 B1 20200129; CN 104465247 A 20150325; CN 104465247 B 20160511; ES 2785406 T3 20201006; WO 2016107364 A1 20160707
DOCDB simple family (application)
EP 15875042 A 20151201; CN 201410853389 A 20141230; CN 2015096096 W 20151201; ES 15875042 T 20151201