Amp-Trap® ATMR fuses, in the Class CC family, are the smallest dimension 600 V fuses suitable for branch circuit protection. The ATMR is a popular choice for economical protection of control circuits and control circuit transformers where available short circuit currents exceed 10000 A. ATMR's rejection dimensions prevent substitution by lesser rated fuses. These fast acting fuses give current limiting protection to general circuits. Mersen Amp-Trap® Fast Acting Fuse, Current Limiting Low Voltage, Series: ATMR, Indicating/Non-Indicating: Non-Indicating, Rejection/Non-Rejection: Rejection, 12 A, 600 VAC/VDC, 200/100 kA Interrupt, Class: CC, Ferrule Terminal, Clip Mount, Cylindrical Body, Single Element, Fiber, 13/32 in Dia x 1-1/2 in L Body Size