Data Sheet

Specifications
Agency Approvals
UL Recognized component for: Access Control System Units (UL 294)
Power Supplies for use with Burglar-Alarm Systems (UL 603)
Power Supplies for Fire Protective Signaling Systems (UL 1481).
cUL Listed ULC-S318-96: Power Supply for Burglar Alarm Systems.
eFlow4NB
The eFlow4NB power supply/charger converts a 120VAC / 60Hz input to a
12VDC or 24VDC @ 4 amp output.
eFlow4NB
Off-Line Switching Power Supply/Charger
Rev. DSeFlow4NB_05132015
Overview
Input Rating:
• Input 120VAC 60Hz, 3.5 amp.
Output:
• Power-limited output.
• 12VDC or 24VDC selectable output.
• 4 amp continuous supply current.
• Aux. power-limited output rated @ 1 amp (unswitched).
• Overvoltage protection.
• Filtered and electronically regulated outputs.
Battery Backup:
• Built-in charger for sealed lead acid or
gel type batteries.
• Maximum charge current 1.54 amp.
• Automatic switch over to stand-by battery
when AC fails.
Transfer to stand-by battery power is instantaneous
with no interruption.
Fire Alarm Disconnect:
• Supervised Fire Alarm disconnect (latching or non-
latching) 10K EOL resistor. Operates on a normally
open (NO) or normally closed (NC) trigger.
Supervision:
• AC fail supervision (form “C” contacts).
- Notification trigger is selectable for
30 seconds (factory set) or 2 hours.
• Battery fail and presence supervision
(form “C” contacts).
• Low power shutdown. Shuts down DC output
terminals if battery voltage drops below 80% of
nominal. Prevents deep battery discharge.
Electrical:
• Operating temperature: 0º C to 49º C ambient.
• 24.57-49.13 BTU/Hr.
• System AC input VA requirement: 420VA.
Visual Indicators:
• AC input, DC output, and Battery LED indicators.
Additional Features:
• Short circuit and overload protection.
Mechanical:
• Product weight (approx.): 0.85 lbs. (0.39 kg).
• Shipping weight (approx.): 1.0 lbs. (0.45 kg).
• Board dimensions (L x W x H approx.):
7.5” x 4.6” x 1.75” (190.5 mm x 116.84 mm x 44.45 mm)