All models are UL listed and incorporate integral battery charging capability which keeps the sealed lead acid gel/cell at full charge for instantaneous stand-by power in case of line voltage failure. All models in the series are Class 2 rated by UL which means that output wiring need not be run in conduit. The BPS-12-1 and BPS-24-1 are one amp units that incorporate a fused AC input and a regulated DC output. A 2.5 Amp current limiting automatic breaker protects the stand-by batteries from driving into a short circuit. Plus, in the event of a DC short, the supply’s regulator will go into thermal cut-off, switching off the output. The power supply enclosure is sized large enough to include at least two optional four amp-hour batteries and the unit can charge up to a 20 AH pack (batteries mounted externally).
