11LSIA, Cutler Hammer, Digitrip 1150 trip unit or programmer, programmable to any amperage requirement, 200 - 6000A, solid state electronic, LSIGA - Long-Time, Short-Time, Instantaneous and Ground Fault Alarm trip functions, suitable for use with Magnum DS, DSL, DSII, DSLII, SPB insulated case circuit breakers