EXD IIB Distribution Board DOL & MCB Starter

A board containing multiple electrical devices to turn electric current on and off or direct its flow, capable of opening and closing a path, or an interconnected group of paths (at least one of which is closed), capable of carrying the flow of electricity through a conductor in all operating conditions, including fault situations.

MCB used to mean ‘Miniature Circuit Breaker’, typically a DIN rail-mounted circuit breaker in a small format that is limited to 100A, and is intended for use in installations with low fault current capacity (under 25kA) unless protected by upstream fuses. MCB’s / Supplementary Circuit Protectors are sealed units that can neither be maintained nor repaired.

MCCB, meaning ‘Molded Case Circuit Breaker, ‘ has been very well adopted at the engineering level. MCCBs generally range from 15A to 1600A. There are versions that are Current Limiting (CL) as well. MCCBs are typically sealed units and cannot be serviced, although in larger sizes, there are versions with interchangeable parts that can be replaced, such as trip units and switch bodies.

BULLETIN 800G hazardous location push button stations

The new 800G components are modern in design and complement the existing Allen-Bradley line of push buttons. They may be ordered as complete factory-assembled stations or as separate components. Components are interchangeable between base and panel mount devices, thus reducing inventory. This new line also provides a lower installation cost option through the flexibility of using cable.

The pre-assembled enclosures, along with standard components, are designed to meet worldwide hazardous locations requirements. They are dual rated for Zone 1, Zone 2, and for Class 1, Division 2.