Altronix AL400ULPD4 Power Supp...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$418.88
$322.81
Altronix AL400ULPD4 Power Supply/Charger, Input 115VAC 60Hz at 3.5A, 4 Fused Outputs, 12VDC at 4A or 24VDC at 3A, Grey Enclosure

Altronix AL400ULPD4 Power Supply/Charger, Input 115VAC 60Hz at 3.5A, 4 Fused Outputs, 12VDC at 4A or 24VDC at 3A, Grey Enclosure

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Model: AL400ULPD4

In Stock (leaves warehouse same day if ordered before 3pm ET)

$418.88
$322.81
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Altronix AL400ULPD4

AL400ULPD4 is a multi-output power supply/charger that converts a 115VAC/60Hz input into four (4) Class 2 Rated 12VDC or 24VDC power limited outputs.

  • Input
    • Input 115VAC, 60Hz, 3.5A.
    • Input fuse rated @ 3.5A/250V.
  • Output
    • 12VDC or 24VDC selectable output.
    • 12VDC @ 4A or 24VDC @ 3A supply current.
    • Four (4) Class 2 Rated fuse protected power limited outputs.
    • Outputs are rated @ 3.5A.
    • Filtered and electronically regulated outputs.
    • Short circuit and thermal overload protection.
  • Battery Charging
    • Built-in charger for sealed lead acid or gel type batteries.
    • Automatic switch over to stand-by battery when AC fails.
    • Maximum charge current: 0.7A.
    • Zero voltage drop when switched over to battery backup.
    • (Batteries are sold separately).
  • Supervision
    • AC fail supervision (form "C" contacts).
    • Notification trigger is selectable for 30 seconds (factory set) or 6 hours.
    • Low battery supervision (form "C" contacts).
    • Battery presence supervision (form "C" contacts).
  • Visual Indicators
    • AC input and DC output LED indicators.
  • Temperature
    • Operating 0° C to 49° C (32° F to 120° F).
    • Storage - 20° C to 70°C ( - 4° F to 158° F).
    • Relative Humidity 85% +/- 5%.
      • BTU/Hr (approx.):
        • 12VDC: 25 BTU/Hr.
        • 24VDC: 37 BTU/Hr.
    • System AC input VA requirement: 166.75VA.

Manufacturer Resources

Product Specs

Warranty:
Lifetime
Subcategory:
Access Power Controller With Power Supplies
Commercial/Residential:
Commercial
Product Group:
Electronic Access Controls
Product Subgroup:
Power Supplies
Product Type:
Power Supplies
Current:
4A
Features:
Converts a 115VAC/60Hz Input into Four (4) Class 2 Rated 12VDC or 24VDC Power Limited Outputs
Includes:
Includes Enclosure, Charger, 4 Fused Outputs
Product Voltage:
120V
Product Category:
Electronic Access Controls
Department:
Door Hardware

Altronix AL400ULPD4 – Frequently Asked Questions

1) Will the Altronix AL400ULPD4 run four maglocks or strikes off one board?
Four fused, power limited outputs come off the AL400ULPD4, each Class 2 rated and individually fuse protected at 3.5A. The board itself supplies 4A total at 12VDC or 3A total at 24VDC, so the fuse rating per output is a protection limit, not a per-device budget. Add up the holding current of everything you are feeding and stay inside the 4A (or 3A) total. Outputs are filtered and electronically regulated, with short circuit and thermal overload protection.
2) Is the Altronix AL400ULPD4 12 volt or 24 volt?
Either. Output voltage is selectable on the board, 12VDC at 4A or 24VDC at 3A. That is a one time setting for the whole supply, not per output, so all four outputs run at the voltage you select. Mixing 12V strikes and 24V maglocks off a single AL400ULPD4 is not possible; that job takes two supplies.
3) Can I get a trouble signal to my alarm panel when the Altronix AL400ULPD4 loses power?
Three separate form C contact sets are on the board: AC fail, low battery, and battery presence. Any of them can be wired back to a monitored input on an alarm or access panel. The AC fail notification trigger is selectable, 30 seconds as it ships from the factory, or 6 hours if you do not want to be paged for a short utility blink. There are also AC input and DC output LEDs on the board for a technician standing in front of it.
4) What else could I use instead of the Altronix AL400ULPD4 for a 12/24VDC access control supply with battery backup?
Closest on output is the Securitron AQL4, a switching supply rated 12/24VDC at 4/3 amps, the same dual voltage and the same current split. If you need more outputs than four, the RCI DKPS-2A gives 8 outputs at 12/24VDC and 2A. If you need more headroom, the SDC 634 Series is a 4 amp regulated and filtered supply with dual voltage selection, and the Von Duprin PS902 is a Grade 1 base supply at 2A, 12/24VDC field selectable. The AL400ULPD4 is the one that combines four fused outputs with a built in sealed lead acid charger and form C AC fail, low battery and battery presence supervision in one grey enclosure.
5) Will the Altronix AL400ULPD4 power a motorized latch retraction exit device?
Don't specify it for that. Motorized latch retraction pulls a heavy inrush surge on actuation that a general purpose access control supply is not built to deliver, and the AL400ULPD4 is a 4A at 12VDC / 3A at 24VDC multi output supply for locks, strikes, readers and controllers. For MLR devices use a supply made for the duty, such as the BEST RPSMLR2 Series power supply for motorized latch retraction exit devices. Delayed egress hardware has its own supply too, the BEST PS161-6, 120V input, 12/24V output, 6A.
6) What is the closest equivalent to an Altronix AL400ULPD4 if I need the same 12/24VDC output at the same current?
The Securitron AQL4 is a switching power supply rated 12/24VDC at 4/3 amps, which matches the AL400ULPD4 output pattern of 12VDC at 4A or 24VDC at 3A selectable. The difference is topology and output count: the Altronix distributes power through four Class 2 rated fuse protected power limited outputs and includes a built-in charger and enclosure, while the AQL4 is a switching supply. If the panel feeds four separate locks or readers off one board, the four fused outputs on the Altronix are the deciding detail.
7) What should I use instead of an AL400ULPD4 if the job needs more than four powered devices?
The RCI DKPS-2A carries eight outputs at 12/24VDC and 2A for access control systems, so it splits power further at a lower total current. The AL400ULPD4 goes the other way: four fused outputs but 12VDC at 4A or 24VDC at 3A of supply current behind them. Count the draw as well as the door count, because eight outputs at 2A total is a different budget than four outputs at 4A.
8) What input power does the Altronix AL400ULPD4 need at the panel?
Standard 115VAC, 60Hz service at 3.5A, protected by a 3.5A/250V input fuse. System AC input requirement is 166.75VA, so a dedicated 120V circuit from the panel is what the electrician needs to pull to the enclosure.
9) Do I need to buy a separate cabinet for the Altronix AL400ULPD4?
No, the AL400ULPD4 ships as a complete assembly: grey enclosure, board with charger, and the four fused outputs. Batteries are the one thing you add.
10) Can the Altronix AL400ULPD4 be mounted in an unconditioned electrical room or a parking garage?
Operating range is 0 C to 49 C (32 F to 120 F) with relative humidity of 85 percent plus or minus 5 percent, so an unheated space that drops below freezing is outside the rating. Heat load from the unit itself is small, roughly 25 BTU/hr at 12VDC and 37 BTU/hr at 24VDC. Storage tolerance is wider, -20 C to 70 C (-4 F to 158 F), but that is shelf storage, not powered operation.
11) What is the difference between a four output access control power supply and a single output one like the SDC 620 or Command Access PS1?
It comes down to how many openings you are feeding from one location. The AL400ULPD4 splits one 115VAC feed into four individually fused Class 2 outputs at 12VDC/4A or 24VDC/3A, so a closet serving several doors runs from one cabinet and one circuit. Single output units are sized for one opening: the SDC 620 Series is a 1 amp regulated and filtered supply with dual voltage selection, and the Command Access PS1 Series is a 1 amp 24VDC linear supply. For a single mag lock or strike those are the right scale; for a bank of doors the four output board saves you the extra cabinets and circuits.
12) What 2 amp supplies with battery backup compare to an AL400ULPD4?
The Command Access PS204/204B is a linear power supply rated 2A at 24VDC with battery backup, and the Adams Rite PS-1 is a regulated 1 amp 12/24VDC supply with battery backup. Both carry standby batteries like the AL400ULPD4, which has a built-in charger for sealed lead acid or gel batteries with a maximum charge current of 0.7A and zero voltage drop on switch over. The Altronix runs at 12VDC 4A or 24VDC 3A and is selectable between the two voltages, while the PS204/204B is a 24VDC unit.
13) What is the difference between an AL400ULPD4 and a Von Duprin PS902 for an access control opening?
The Von Duprin PS902 is a Grade 1 base power supply rated 2A at 12/24VDC field selectable for access control. The AL400ULPD4 is field selectable the same way but rated 12VDC at 4A or 24VDC at 3A, and it lands that power on four Class 2 rated fuse protected outputs with LED indicators for AC input and DC output. The PS902 is a base unit that takes option boards; the Altronix ships as an enclosure with charger and four fused outputs.
14) I need a 12VDC supply with much higher current than the AL400ULPD4. What steps up from it?
The Securitron AQS1210 is a 12VDC 10 amp switching power supply, well above the AL400ULPD4 rating of 12VDC at 4A. The tradeoff is voltage flexibility: the Altronix is selectable for 12VDC or 24VDC operation, while the AQS1210 is a 12VDC unit. If any device on the run is 24V, the selectable supply keeps one part number on the truck.
15) Is there a plug-in power supply I can use for a single door instead of mounting an AL400ULPD4 enclosure?
The ROFU 9126T is a plug in mini power supply rated 12VDC at 1.5A with time delay, which avoids a wall mounted enclosure and a dedicated AC circuit run. The AL400ULPD4 is a hard wired unit that ships with its enclosure and charger and draws 115VAC 60Hz at 3.5A, with a system AC input requirement of 166.75VA. For one low draw device where a receptacle is nearby, the plug in unit is the lighter install.
16) Is the Altronix AL400ULPD4 suitable for a commercial building install rather than a house?
It is a commercial grade unit, hard wired to a 115VAC 60Hz circuit and housed in a grey metal enclosure for a closet or equipment room, not a plug in transformer. For a small residential or single door job a plug in unit like the ROFU 9126T mini supply, 12VDC at 1.5A with time delay, is the lighter alternative.
17) For a 24VDC only job at low current, what is a lighter option than the AL400ULPD4?
The Command Access PS1 Series is a 24VDC linear power supply with 1 amp output, and the PS210 is a UL 6E/CSA linear supply with 1.5A at 24VDC and boost circuitry. Both are single voltage 24VDC units. The AL400ULPD4 is selectable for 12VDC or 24VDC and rated 24VDC at 3A across four Class 2 fused outputs, which is more capacity and more distribution than a single 24V device needs.
18) How does an Aiphone AC-PS1250 differ from an Altronix AL400ULPD4?
The AC-PS1250 is a UL listed 12VDC 5A supply built for Aiphone AC Series access control kits, so it is matched to that system. The AL400ULPD4 is a brand independent commercial supply that converts 115VAC/60Hz into four Class 2 rated 12VDC or 24VDC power limited outputs and is selectable between 12VDC at 4A and 24VDC at 3A. If the panel is an Aiphone AC Series kit, the kit supply is the matched part; for mixed hardware at 24V, the selectable unit covers both.
19) Is a solar power supply an option where I would otherwise use an AL400ULPD4?
The Securitron BPSS is a boxed solar power supply, which suits an opening with no AC service available. The AL400ULPD4 requires line power, taking 115VAC 60Hz at 3.5A with a 3.5A/250V input fuse, and in exchange gives four Class 2 rated fused outputs, a battery charger with automatic switch over on AC failure, and form C supervision contacts. Where a 115VAC circuit exists, the AL400ULPD4 is the conventional choice; where it does not, solar is the path.
How fast can I get the Altronix AL400ULPD4 delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Altronix AL400ULPD4 come with a warranty?
Absolutely. The Altronix AL400ULPD4 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Altronix AL400ULPD4?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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