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Pegasus Astro 12V/10A power supply with XT60 plug

Pegasus Astro Power Supply Unit 12V/10A - 120W

by Pegasus Astro
SKU PEG-PSU-21
$65.00 USD - $70.00 USD
$65.00 USD
$65.00 USD - $70.00 USD
$65.00 USD
Price Match Policy!
  • Provides 12V nominal voltage at up to 10A
  • Delivers a total of 120W of power
  • Sealed enclosure protects against humidity and dust
  • Available with 2.1mm, 2.5mm, or XT60 DC plugs
  • Regulated output with low ripple and noise
  • Universal 90-264V AC input for global use
Plug
8 in stock
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Pegasus Astro Power Supply Unit 12V/10A (120W)

    The Pegasus Astro Power Supply Unit delivers a regulated 12.5V output with up to 10A of current, providing a stable 120W power budget for your entire imaging rig. It is the supply Pegasus Astro recommends in the manuals of its own powerboxes and dew controllers. It accepts a universal 90-264V AC input and is available with three distinct DC connectors to match your specific equipment. Its sealed enclosure keeps humidity and dust out, which is what you want from a brick that sits on the ground under a dewy sky all night.

    The 12V / 10A Supply Pegasus Recommends for Its Own Gear

    Open the manual of the Ultimate Powerbox v3, the Pocket Powerbox Advance or the DewMaster2 and you will find the same advice: use the certified Pegasus Astro 12V / 10A supply. The Ultimate Powerbox v3 manual explains why. The unit is built to deliver its current within the 11 to 14.5V range the powerbox expects, and to shield it from voltage fluctuations. When one supply feeds your camera, mount, focuser and dew straps through a powerbox, the quality of that one supply sets the quality of power everything else receives.

    Choosing the Right DC Plug: 2.1mm, 2.5mm, or XT60

    Pegasus sells this supply with three DC plugs, and its own advice is "choose wisely". The supply is the same in all three; only the plug changes, and each plug matches a specific generation of Pegasus controllers.

    • XT60 (PEG-PSU-XT60): for the Ultimate Powerbox v2 and Ultimate Powerbox v3, whose power input is an XT60 socket. Pegasus builds this version as the 2.5 mm plug with an XT60 adapter.
    • 5.5 x 2.1 mm (PEG-PSU-21): for the Pocket Powerbox, including the Pocket Powerbox Advance, the DewMaster2 and the other Pegasus products with a 2.1 mm center-positive input.
    • 5.5 x 2.5 mm (PEG-PSU-25): for the original Ultimate Powerbox (v1) and the original DewMaster (v1).

    Sizing Your Power: Is 10A / 120W Enough for Your Rig?

    Pegasus calls its 12V / 10A supply sufficient for a single astro setup in most cases, and the manuals back that up with numbers. The Pocket Powerbox Advance and the Ultimate Powerbox v2 ask for a supply that can deliver at least 6 A, the Ultimate Powerbox v3 at least 8 A, and Pegasus notes that an observatory at peak demand may need up to 10 A. The Pocket Powerbox Advance itself is rated for 10 A in total, so this supply matches it exactly.

    Add up the draw of your gear before you buy. A cooled camera running its cooler hard, several dew straps on a cold night and a mount slewing at the same moment can push a rig past 120 W. Above that, Pegasus advises a 12V supply rated 10 to 20 A, and for the Ultimate Powerbox v2 and v3 it makes the 12V / 20A (240W) XT60 unit, PEG-PSU-XT60H.

    Clean Power: Regulated 12.5V Output for Stable Imaging

    The output is regulated at 12.5V with low ripple and noise. Pegasus is blunt about the alternative: cheap units sag under heavy load and pass ripple through, and that shows up as artifacts in CCD and CMOS frames. A regulated supply holds its voltage as the load changes through the night, so your camera sees the same clean power at dusk and at 3 a.m.

    That 12.5V also sits well inside the input range of the controllers it feeds: 11 to 14.5V for the Ultimate Powerbox v3 and the DewMaster2, and under the 15V ceiling that the Ultimate Powerbox v3, Pocket Powerbox Advance and DewMaster2 manuals warn never to exceed. One more tip from the same manuals: keep the DC cable between the supply and your powerbox short and thick, because long, thin power leads drop voltage before it reaches your gear.

    Sealed Enclosure and Built-In Protections

    The case is sealed, so humidity and dust cannot get inside. On a dewy night at a dark site, that is what lets it sit under the tripod with the rest of your gear.

    Inside, Pegasus lists over-current and short-circuit protection (it treats any output impedance below 0.1 ohm as a short and recovers on its own once the fault is gone), over-voltage protection with automatic recovery, a 6.3A 250V input fuse against power line surges and abnormal conditions, and no-load protection so the supply comes to no harm when nothing is drawing current. It is a protection class I unit, EMI/EMS certified, with CE and FCC certificates and ErP efficiency level VI.

  • Which plug do I need for my Pegasus Astro Ultimate Powerbox v3?

    Choose the XT60 version, PEG-PSU-XT60. The Ultimate Powerbox v3 takes its power through an XT60 socket, and the same version fits the Ultimate Powerbox v2.

    Can the Pegasus 120W power supply run a Pocket Powerbox Advance?

    Yes. Choose the 5.5 x 2.1 mm version, PEG-PSU-21, which is the SKU the Pocket Powerbox Advance manual names. Its 10 A matches the powerbox's 10 A total rating, well above the 6 A minimum the manual asks for.

    What should I do if my imaging rig needs more than 120W of power?

    Above 120 W, Pegasus recommends a 12V supply rated 10 to 20 A. With an Ultimate Powerbox v2 or v3, the natural step up is the Pegasus 12V / 20A (240W) XT60 supply, PEG-PSU-XT60H, which doubles the power budget.

    What is the difference between the 2.5mm and XT60 versions of this Pegasus power supply?

    The supply is the same; only the DC plug differs. The 2.5 mm version, PEG-PSU-25, is for the original Ultimate Powerbox (v1) and the original DewMaster. The XT60 version, PEG-PSU-XT60, is the 2.5 mm plug with an XT60 adapter, for the Ultimate Powerbox v2 and v3.

    Does the Pegasus 12V/10A supply come with a power cord for my country?

    Yes. It comes with a 1.5 m power cord for your country type. Pegasus makes cords for the USA, Europe, Great Britain (UK) and Australia.

    Is it safe to leave this Pegasus power supply outside overnight in damp conditions?

    Its sealed enclosure keeps humidity and dust out, so dew settling on it through the night is not a problem. Pegasus does not give it a waterproof rating, so keep it off wet ground and out of the rain, and cover it if a shower is possible.

  • Output Voltage 12V nominal (12.5V regulated output)
    Output Current 0-10 A
    Maximum Power 120 W
    Input Voltage Range 90-264V AC
    Input Frequency 47-63 Hz
    DC Connector Options 5.5 x 2.1 mm (PEG-PSU-21), 5.5 x 2.5 mm (PEG-PSU-25), or XT60 (PEG-PSU-XT60)
    Cord Length 150 cm / 5 ft
    Output Quality Regulated, low ripple and noise
    Enclosure Sealed / protected (humidity and dust cannot enter)
    Efficiency Level (ErP) VI
    Protections Over current / short circuit, over voltage, input fuse F1 6.3A 250V, no-load protection, protection class I
    Certifications CE, FCC, EMI/EMS certified, safety agency requirements
    AC Power Cords USA, Europe, Great Britain (UK), Australia
    Dimensions 169 x 61 x 39 mm

    • Pegasus Astro 12V / 10A power supply unit with chosen DC plug

      × 1

    • Country-specific AC power cord (1.5 m)

      × 1

  • Pegasus Astro 2-Year Warranty