
2060 Whitfield Park Ave., Sarasota, FL 34243 | 800.826.5537 | fax 941.755.6529 | Commercial-Industrial
@
stiebel-eltron-usa.com | www.stiebel-eltron-usa.com
rev. 4.2024 | Due to our continuous process of engineering and technological advancement, specifications may change without notice.
Specications
ENGINEERING SPECIFICATION SHEET
Model CERO Plus 48 kW, CERO Plus 54 kW, CERO Plus 72 kW
Phase 3-phase
Inlet/outlet pipe connection ¾˝ or 1˝ female NPT
Heat exchanger material 316L stainless steel
Enclosure rating NEMA 4 shown, NEMA 4X available
Operating pressure range 4–145 psi (0.28–10 bar)
Maximum temperature output 180 °F (82 °C)
Temperature adjustment range 60–180 °F (16–82 °C)
Temperature adjustment increment 1 °F (1 °C)
Number of heating elements 12
Minimum activation flow 2.0 gpm (7.6 l/m) for DN 20 flowmeter
3.75 gpm (14.2 l/m) for DN 25 flowmeter
Maximum flow at 60 psi 22.5 gpm (85.2 l/m) for DN 20 flowmeter
40 gpm (151.4 l/m) for DN 25 flowmeter
CERO Plus Series: 48 kW, 54 kW, 72 kW | NEMA 4/4X
Model Part Number Voltage Phase kW Amps 3P
Breaker
Size (A)
Temperature Rise °F
3 gpm 4 gpm 5 gpm 10 gpm 20 gpm
CERO Plus
48 kW
CEROPLUS-048-240 240 3-phase delta 50.00 120.28 150 >100 85 68 34 17
CEROPLUS-048-480 480 3-phase delta 50.00 60.14 70 >100 85 68 34 17
CEROPLUS-048-575 575 3-phase delta 47.99 48.19 60 >100 82 66 33 16
CERO Plus
54 kW
CEROPLUS-054-208 208 3-phase delta 54.08 150.11 175 >100 92 74 37 18
CEROPLUS-054-240 240 3-phase delta 54.05 130.02 150 >100 92 74 37 18
CEROPLUS-054-480 480 3-phase delta 54.05 65.01 70 >100 92 74 37 18
CERO Plus
60 kW
CEROPLUS-060-240 240 3-phase delta 60.00 144.34 175 >100 >100 82 41 21
CEROPLUS-060-480 480 3-phase delta 60.00 72.17 80 >100 >100 82 41 21
CERO Plus
72 kW
CEROPLUS-072-240 240 3-phase delta 72.00 173.21 200 >100 >100 98 49 25
CEROPLUS-072-480 480 3-phase delta 72.00 86.60 100 >100 >100 98 49 25
CEROPLUS-072-575 575 3-phase delta 71.99 72.28 80 >100 >100 98 49 25
Certified to ANSI/UL Std. 499
Conforms to CAN/CSA
Std. C22.2 No.88
W
A
R
R
A
N
T
Y
6
/
2
L
I
M
I
T
E
D
6 years against leakage /
2 years against defects in
workmanship & materials