Miniature Circuit Breaker is an electrical circuit protection device used as an alternative to re-wireable and cartridge type fuses. It trips out when too much current flows in the circuit, typically under fault conditions.
This is an unit (block) of system memory. Allocated, changed and emptied by DOS on a start of a program or upon corresponding call. In memory, blocks are organized as list containing M-blocks and ending with a Z-block.
Multiple Contract Billing. A convenient billing arrangement that Northwestern Mutual offers to organizations that pay premiums for groups of three or more contributors. An example would be a charity with multiple life insurance donors.