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EFLOW4NB Altronix Off-Line Switching Power Supply/Charger

  • Altronix eFlow4NB UL Listed Sub-Assembly power supply/charger converts a 120VAC, 60Hz input into a single 12VDC or 24VDC power-limited output.
  • It also offers a suite of features that includes fire alarm disconnect, overvoltage protection, and low power disconnect which prevents deep discharge of standby batteries.
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Ordering Notes: Dealers Only
MSRP Price: $314.00
Online Price: $224.00

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EFLOW4NB Altronix Off-Line Switching Power Supply/Charger
EFLOW4NB Altronix Off-Line Switching Power Supply/Charger
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Product Details



  • Voltage - 120VAC, 60Hz, 3.5A max.
  • Fuse Rating - 5A / 250V.


  • Voltage - 12VDC or 24VDC, selectable.
  • Current - 4A continuous max Class 2 Rated power-limited output.
  • Auxiliary - 1A Class 2 Rated power-limited output(unswitched).
  • Other - Overvoltage protection, Filtered and regulated.

Back-up Battery (not included)

  • Type - Sealed lead acid or gel type.
  • Fuse Rating - 7.5A/32VDC.
  • Failover - Upon AC loss, instantaneous.

Fire Alarm Disconnect

  • Supervised - Latching or non-latching.
  • EOL - 10K Resistor.


  • AC Failure - Form C"contacts.
  • Battery - Form C"contacts.
  • Low DC Power Shutdown - Shuts down DC output terminals if battery voltage drops below 71-73% for 12V units and 70-75% for 24V units (depending on the power supply). Prevents deep battery discharge.

Indicators (LED)

  • Input - 120VAC is present.
  • DC Output - Powered.

Agency Listings

  • UL
    • UL294 - Access Control System Units.
    • UL603 - Power Supplies for Use with Burglar-Alarms Systems.
    • UL1481 - Power Supplies for Fire Protective Signaling Systems.
  • cUL - ULC-S318-96 Burglar Alarm, ULC-S319-09 Access Control, CSA C22.2 No.205 Signal Equipmen

Physical and Environmental

  • Dimensions (H x W x D) - 7.5"x 4.6"x 1.75"(190.5 mm x 116.8 mm x 44.5 mm).
  • Product Weight - 0.85 lbs. (0.39 kg).
  • Shipping Weight - 1.0 lbs. (0.45 kg).
  • Operating Temperature - 0C to 49C (32F to 120F).
  • Storage Temperature - -20C to 70C (-4F to 158F).
  • Relative Humidity - 85% +/-5%
  • BTU/Hr (approx.) - 12VDC - 25, 24VDC - 49

EFLOW4NB Specifications PDF


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