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The AQM20 multi-voltage power supply series offers a robust, self-contained product that doesn’t need any external transformer to provide up to 20 Amps of low-voltage output from its two internal transformers. These dynamic units are incredibly adaptable. They have two 12 VDC 8 Amp outputs that can be configured to provide 12 VDC, 24 VDC, or both 12 VDC and 24 VDC at the same time. At 12 VDC, the power is rated up to 16 Amps of continuous output, and at 24 VDC it's rated at 8 Amps.
There are even more options available in these field selectable power supplies. The access control input and outputs are customizable in a couple of different ways. You can choose to have the fire trigger in either PTC, or with a fuse/dry contact option. You can also choose configurable outputs with a fire relay input. The AC input is available as either 120 or 240 VAC, but by default is set to 120 VAC. The outputs are completely independent of each other, and the unit supports up to two 12V or 24V sealed gel, AGM or wet lead acid batteries with precise regulation.
The AQM20 series was designed to handle any kind of emergency. If there is a power failure, the battery will immediately support the unit without any kind of drop or switch over time. And because the battery has dedicated voltage, the battery charges quickly even if it's under a full load. The AQM20 power supplies work like a champ in the event of a brown out, and the circuit breaker protects against any over-current or reverse-battery faults by automatically resetting. Both outputs have electronic Power Limited and Short Circuit protection, as well as thermal shut down with an automatic restart.
It's easy to stay apprised of the AQM20's status with LED's that show what the AC and DC outputs are sending out, and form "C" contacts to keep track of the power status.
All of the AQM20 series models are UL 294 recognized. The AQM20 has two outputs, but is not Class 2 Power Limited. The AQM20-8F, AQM20-8C, AQM20-8F8R and AQM20-8C8R all have eight outputs, but only the 8C8R is Class 2 Power Limited. The 8F and 8F8R both have regular fuses, rated at 4 Amps and 2 Amps respectively. The 8C has a 3.08 Amp PTC fuse while the 8C8R has a 1.04A PTC fuse. Both the 8F8R and 8C8R have eight access control fire relays. The AQM20-16F and AQM20-16C both have 16 outputs, but only the 16C is Class 2 Power Limited. The 16F has a 3 Amp rated fuse, while the 16C has a 1.5 Amp PTC fuse.
The AQM20 units come in a 14" by 14" by 4.75" enclosure, and weigh 12.7 lbs. They have an operating temperature ranges from -4 to 104 degrees Fahrenheit, which is -20 to 40 degrees Celsius.
A short but informative video on Securitron’s line of switching power supplies is available below:
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