Datasheet
Advanced Digital Temperature Controller E5CN-H 11
Current Transformers
48
48.8
22
9.1
Terminal Cover
E53-COV17
Waterproof Packing
Y92S-29 (for DIN 48 × 48)
Order the Waterproof Packing separately if it becomes lost or 
damaged.
The Waterproof Packing can be used to achieve an IP66 degree of 
protection.
(Deterioration, shrinking, or hardening of the waterproof packing may 
occur depending on the operating environment. Therefore, periodic 
replacement is recommended to ensure the level of waterproofing 
specified in IP66. The time for periodic replacement depends on the 
operating environment. Be sure to confirm this point at your site. 
Consider one year a rough standard. OMRON shall not be liable for 
the level of water resistance if the customer does not perform periodic 
replacement.)
The Waterproof Packing does not need to be attached if a waterproof 
structure is not required.
Note: The E53-COV10 
can not be used.
E54-CT3 Accessory
• Armature
30
21
15
5.8 dia.
25
3 
40
10.5
2.8
7.5
10
Two, 3.5 dia.
40 × 40
30
12 dia.
9
2.36 dia.
15
30
Two, M3 (depth: 4)
Approx. 3 dia.
18
(22)
Approx. 6 dia.
Plug
Armature
Lead
E54-CT1
E54-CT3
Connection Example
• Plug
E54-CT1
Thru-current (Io) vs. Output Voltage 
(Eo) (Reference Values)
Maximum continuous heater current: 50 A (50/60 Hz)
Number of windings: 400±2
Winding resistance: 18±2 Ω
Thru-current (Io) A (r.m.s.)
1 10 100 mA 1 10 100
1,000 A
Output voltage (Eo) V (r.m.s.)
100 V
50 Hz
Distortion
factor 10%
3%
1%
100 Ω
R
L = 10 Ω
∞
10
1
100 mV
10
1
100 μV
10
1 kΩ
E54-CT3
Thru-current (Io) vs. Output Voltage 
(Eo) (Reference Values)
Maximum continuous heater current: 120 A (50/60 Hz)
(Maximum continuous heater current for an OMRON
Temperature Controller is 50 A.)
Number of windings: 400±2
Winding resistance: 8±0.8 Ω
3%
1%
1 kΩ
100 Ω
50 Ω
R
L = 10 Ω
500 Ω
∞
Distor-
tion
factor 
10%
Thru-current (Io) A (r.m.s.)
1 10 100 mA 1 10 100
1,000 A
Output voltage (Eo) V (r.m.s.)
100 V
50 Hz
10
1
100 mV
10
1
100 μV
10










