General Electric Company

Walter Felden

Matthias Reichard

Javier I Larranaga

Joseph Criniti

Rolf-Dieter Bauer

Eladia Pulido

Christian Alfons Thamm

Volkman Henschel

Manfred Schulz

A release unit for a circuit breaker is equipped with a magnet yoke and an armature collaborating with it for actuating a release device, in which case a nonmagnetic weight element that increases the inertia of the armature is applied to the armature.

Selective release unit for circuit breaker

A clapper armature system for a circuit breaker includes a heater having a heater element and a pair of electrical conductors. The heater element is electrically connected to and disposed between the conductors. The conductors are spaced from the heater element to provide a pair of slots between the conductors and the heater element. A heat sensitive strip having one end electrically connected to at least one conductor is disposed proximate the heater element. A yoke has a pair of arms with each arm passing through a respective slot of the heater. The heater element and heat sensitive strip are disposed between the arms and provide a plurality of current paths between the arms. A clapper is disposed pivotally proximate the arms. The clapper pivots to the arms of the yoke to open a pair of separable contacts of the circuit breaker in response to a predetermined current passing through the heater and heat sensitive strip.

Clapper armature system for a circuit breaker

A thermomagnetic circuit breaker in a preformed housing comprises a display means for selective display of the reasons for tripping. Tripping bars, actuable independently of one another, include a release function as well as a display function. Alternatively, display may take place with additional trip levers. Combinations of independently actuable tripping bars and an operating handle provide a display means for display of an overload, momentary, ground fault or accessory trip condition.

Thermal magnetic circuit breaker

An adjustable magnetic trip unit for a circuit breaker (,) is equipped with a magnet yoke (,), an armature element (,) that works therewith to actuate a trip shaft (,), and an adjusting bar (,) that can be tilted about the axis (,) of the trip shaft (,) for adjusting the distance (L) between the magnet yoke (,) and the armature element (,). This magnetic trip unit can be used in a circuit breaker (,) having a plurality of breaker cassettes (,) arranged adjacent to one another wherein the adjusting bar (,) extends parallel to the axis (,) of the tripping shaft (,) and on which are arranged a plurality of adjusting arms (,) corresponding to the number of breaker cassettes (,).

Circuit breaker with adjustable magnetic trip unit

A thermal trip unit within a multi-pole circuit breaker includes a bimetal element having an off-set end to provide cam function during the calibration of the bimetal element. A calibration screw is threadingly engaged within the bimetal element and is adjusted at various calibration levels by means of a step motor driver element.

Growing community of inventors

Neumunster, Germany

Walter Felden