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This range of 19" 3U rack mountable switch mode power supplies can accept an input of 110V or 230V and will provide a regulated output of 12V DC at up to 8A.
These units will house and charge up to 2 x 12Ah VRLA batteries and is equipped with two separate DPCO (Double Pole Change Over) contacts for mains fail & low voltage signalling.
Battery low voltage disconnect, if the voltage from the battery falls below 9.5V DC, for example after an extended mains failure, the battery terminal will disconnect. When the unit voltage recovers (when mains is resumed) the battery terminals will reconnect, allowing recharge.
Fire enable output switching can be driven from a 12V or 24V DC supply. A typical use for this relay would be interfacing a fire panel with the power supply to de-power magnetic locks in the event of a fire condition.
|Product code||Description||Data sheet||Leaflet|
|DA457-1||1 x 12V DC 8A 3U rack mount power supply with VRLA support.|
|DA457-2||2 x 12V DC 4A 3U rack mount power supply with VRLA support.|
|DA457-4||4 x 12V DC 2A 3U rack mount power supply with VRLA support.|
|DA457-8||8 x 12V DC 1A 3U rack mount power supply with VRLA support.|
|DA457-16||16 x 12V DC 500mA 3U rack mount power supply with VRLA support.|
Battery low voltage isolator
Mains powered relay
12V DC 16A 1U power supply