E-T-A has introduced a range of battery master switches for hazardous
cargo carrying road tankers that meet the 2003 edition of ADR regulations
and the additional requirements of UK operators. The BMS01 series
provides both single- and double-pole switching options for chassis and
insulated return systems, and can be operated remotely from the driver's
cab or other strategic locations on the vehicle. It is sealed to IP69(k),
significantly ahead of the minimum IP65 specification in ADR2003.
On disconnection, the main contacts open after a short pre-set delay to
allow for the controlled shut down of engine management systems. During
this delay, an additional set of contacts closes to sound an audible
alarm. Further contacts are fitted for alternator field disconnection and
a permanently energised protected output is maintained for the tachograph
display. The unit has a novel under-voltage monitoring feature that
disconnects the battery from the electrical system in the event of a fall
in voltage to 22.8V.