Precision Products Aircraft Circuit Breakers - Sensata

Simplified Glossary of Circuit Breaker TermsCircuit breaker– A devicedesigned to carry a specific valueof current and automatically opena circuit upon overloads orshort circuits.Thermal circuit breaker –A circuit breaker that senses acurrent overload based on thermalheating of the sensing element.Time-current curve – An approximategraph showing the minimumand maximum time a specificbreaker will take to trip on variousdegrees of overload.Ambient compensation –A feature of some thermal breakersthat limits or eliminates thermalderating due to ambienttemperature.Minimum ultimate trip – Currentrating at which a breaker will nottrip within a certain period (usually1 hour) at a specified temperature.Maximum ultimate trip – Currentrating at which a breaker must tripwithin a certain period (usually 1hour) at a specified temperature.Thermal derating – Tendency of abreaker to trip at lower currentlevels due to higher ambienttemperatures, and to trip at higherlevels due to lower ambienttemperatures.Trip-free – Feature of certainbreakers that makes it impossible tohold the breaker closed against anoverload.Manual reset – Method ofaccomplishing reclosure aftercircuit interruption has occurred.Indicating, non-indicating –Whether or not breaker givesprominent visual indication ofopening, such as exposing a whiteband around button, or movingtoggle to off position.Manual trip – Ability of breakerto be opened manually.Auxiliary circuit – An integrallyhoused, electrically independentswitch linked mechanically tooperate with the main circuitbreaker contacts.Voltage drop – The voltagedecrease across the breaker due tointernal resistance of the device.WARRANTYSensata Technologies warrants its circuit breakersagainst faulty workmanship or the use ofdefective materials for a period of 18 monthsfrom date of manufacture. This warrantyapplies only to products purchased directlyfrom Sensata Technologies or through an authorizedSensata Technologies distributor. During thewarranty period, any circuit breaker found bySensata Technologies, in its sole judgement, to bedefective, will be repaired or replaced, at theoption of Sensata Technologies. Under no circumstancesdoes Sensata Technologies responsibilityor liability extend to incidental or consequentialdamages whatsoever.The foregoing is in lieu of all warrantiesexpress, implied or statutory, including, but notlimited to, any implied warranty of merchantabilityand fitness for a purpose and of anyother warranty obligation on the part ofSensata Technologies.Important Notice: Sensata Technologies (Sensata) reserves the right to make changes to or discontinue any product orservice identified in this publication without notice. Sensata advises its customers to obtain the latest version of the relevantinformation to verify, before placing any orders, that the information being relied upon is current. Sensata assumes no responsibilityfor infringement of patents or rights of others based on Sensata applications assistance or product specificationssince Sensata does not possess full access concerning the use or application of customers’ products. Sensata also assumesno responsibility for customers’ product designs.