General Electric Company

Chandrakumar Shantaraju

Janakiraman Narayanan

Mahesh Jaywant Rane

ShachiDevi Tumkur Krishnamurthy

Tirumani Govinda Setty Phaneendra

Chandrappa Namitha

Patrick Letient

Pavan Ramachandra Vitthal Kashyap

A plug-in contact system for a plug-in type circuit breaker is disclosed. The movable contacts are easily engaged within the circuit breaker by the design of the contact support which includes a guiding protrusion, thus lowering the necessary insertion force. The stationary contacts provided on a fixed base, to which the circuit breaker may be plugged in, may be provided with modular contact supports. In addition, a shutter arrangement provides protection to the stationary contacts when a plug-in breaker is withdrawn from the fixed base.

Contact system arrangement for plug-in circuit breakers and base

An interface for a plug-in circuit breaker for carrying auxiliary components is disclosed. The interface includes a substrate having a base surface secured to the circuit breaker and a mounting surface. A plurality of auxiliary contact blocks, each carrying eight auxiliary contacts, can be mounted on the mounting surface. A plurality of rating plugs, for avoiding insertion of a wrong breaker into a plug-in base, may further be mounted on the mounting surface. The interface may further include a plurality of tunnel-shaped passageways for routing auxiliary circuit wires and preventing their interference with moving parts of the breaker.

Interface for auxiliaries used with plug-in base

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Bengaluru, India

Chandrakumar Shantaraju