Disclosed is a module type safety bus bar including: a vertical coupling portion (20) which is a vertically-extending rectangular parallelepiped insulating block, has an upper end provided with a first combining means, and a middle portion into which a bus bar (30) penetrates to be combined with the vertical coupling portion in the form of a cross, the bus bar (30) connecting terminals of a distributor (A) to a circuit breaker (B); and a horizontal coupling portion (10) which is a horizontally-extending rectangular parallelepiped insulating block and has a second combining means, to be combined with the first combining means, in a middle portion of a lower end thereof. The horizontal coupling portion (10) covers an exposed metallic portion of the bus bar after the terminals of the distributor and circuit breaker are connected to each other so that the bus bar (30) becomes safe.