Overload protection device and thermal magnetic adjustable trip unit for a breaker comprising the same

An overload protection device, comprising:

• a first heating band;
• a second heating band;
• a bimetallic strip;
• and
• an electrically conductive braided wire,
• wherein the first and second heating bands are made entirely from a flat metal band being bent substantially in an L-shape,
• wherein a lower part of the first heating band is mechanically connected with a lower part of the bimetallic strip,
• wherein two ends of the electrically conductive braided wire are mechanically connected with an upper part of the second heating band and an upper part of the bimetallic strip respectively,
• wherein the overload protection device is configured for current flow in a direction in a successive order of an upper part of the first heating band, the lower part of the first heating band, the lower part of the bimetallic strip, the upper part of the bimetallic strip, the electrically conductive braided wire, the upper part of the second heating band, and the lower part of the second heating band, thus forming an odd-numbered current loop, and
• wherein current flow through the first heating band and current flow through the bimetallic strip are in opposite directions relative to one another in portions of the first heating band and the bimetallic strip that directly overlap one another.