Page 1
PRIMARY
115VAC
50/60Hz
SECONDARY
24VAC
SECONDARY
Black Lead
(28VAC)
Black
Lead
White
Lead
Yellow Lead
(24VAC)
Yellow
Lead
(24VAC)
Brown Lead
(Common)
Brown
Lead
(Common)
28VAC
Black
Lead
(28VAC)
Brown
Lead
(Common)
T2428175 - Open Frame Transformer
F
A
B
D
C
E
H
G
Overview:
T2428175 transformer converts 115VAC 50/60Hz to 24VAC or 28VAC for powering low voltage devices.
Maximum power output is 24VAC @ 7.25 amp or 28VAC @ 6.25 amp.
Specification Chart:
Model #
Input (Primary) Output (Secondary) Agency Listing
T2428175
115VAC 50/60Hz (1.6 amp) 24VAC/175VA (7.25 amp) or
28VAC/175VA (6.25 amp)
Installation Instructions:
1. Mount transformer in desired location/enclosure (refer to Transformer Dimensions below).
2. Connect AC power to the primary leads Black and White (refer to Wiring Configuration below).
Use 18 AWG or larger for all power connections.
3. Measure output voltage across the secondary leads before connecting devices (refer to Wiring Configuration below).
This helps avoid potential damage.
- Yellow and Brown leads provide 24VAC (open circuit voltage is approx. 26.1VAC @ 115VAC input).
- Black and Brown leads provide 28VAC (open circuit voltage is approx. 30.4VAC @ 115VAC input).
4. Connect 24VAC device(s) to Yellow and Brown secondary leads or 28VAC device(s) to Black and Brown
secondary leads (refer to Wiring Configuration below).
WARNING: This installation should be made by qualified service personnel and should
conform to all local codes and in accordance with the National Electrical Codes.
Wiring
Configuration:
Transformer Dimensions:
Model # A B C D E F G H Approx. Ship Wt.
T2428175 3.156” 3.782” 3.10” 1.5” 2.937” 2.44” 2.398” 3.06 5.8 lbs.
Altronix is not responsible for any typographical errors. Product specifications are subject to change without notice.
140 58th Street, Brooklyn, New York 11220 USA, 718-567-8181, fax: 718-567-9056
website: www.altronix.com, e-mail: info@altronix.com, Made in U.S.A.
IIT2428175 - Rev. 061710 F17J
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