Customize a Lectern with your Company Logo. Choose any of our lecterns and make it your own. Promote your company identity with a personalized lectern customized with your business logo. AmpliVox offers custom logo solutions to add your business logo prominently on any lectern of choice. Make your brand stand out at your next event.
Vacuum circuit breakers have minimal arcing (as there is nothing to ionize other than the contact material), so the arc quenches when it is stretched a very small amount (less than 2â3 mm (0.079â0.118 in)). Vacuum circuit breakers are frequently used in modern medium-voltage switchgear to 38,000 volts. Also indicates the status of the circuit breaker (On or Off/tripped). 2  Most breakers are designed so they can still trip even if the lever is held or locked in the on position. 3  This is sometimes referred to as free trip or positive trip operation. 4  Actuator mechanism-forces the contacts together or apart.
âMCBâ stands for âMiniature Circuit Breakersâ while âMCCBâ is âMolded Case Circuit Breaker.â. The main difference between the two is their capacity with the MCB rated under 100 amps with an interrupting rating of under 18,000 amps.ircuit breakers are usually reset after they have been âtripped.â Both MCB and MCCB are highly durable and could last for years depending on the manufacturer. When choosing between using an MCB and an MCCB, it is important to consider the amount of power that would be coursing through the device.