The SELCO B9500 Master Time Controller B9500 is used to ensure that electrical clocks, working on the system frequency in electrical generator installations, are running precisely.

The B9500 Master Time Controller is used as a complementary unit to T4800 Load Sharer which in addition to the load sharing functions also perform frequency control.

Only one B9500 Master Time Controller is necessary for an installation consisting of several generators.

The B9500 is flush mounted with measurements of 96 x 96 x 82.5 mm (H x W x D).