www.littelfuse.com/se-cs30
SE-CS30-70
SE-CS30-4
SE-CS30-26
SE-CS30-8
SE-CS30-5
SECONDARY EXCITING VOLTAGE (VOLTS)
10.0
50.0
5.0
1.0
0.1
SECONDARY EXCITING CURRENT (MILLIAMPERES)
1.0 30.0
0.10.01 0.05 20.0
10.0
Current Sensor
Description
The SE-CS30 series is a sensitive nickel-core current
transformer used with Littelfuse relays to detect low levels of
earth-leakage current.
Specifications
Turns Ratio 600:1
Current Rating 30:0.05 A
Accuracy 3% @ 0.06 VA
Frequency 50-400 Hz
Insulation Level 600 V
Operating Temperature -55 to 60ºC (-67 to 140ºF)
Application FPU-32, FPS, MPU-32, MPS, PGR-6100,
PGR-6101, SE-330, SE-701, SE-704
Certification CSA, UL, CE
Compliance RoHS, IEC 60044-1
Rev: 1-A-060418
Accessories
Current Transformers
© 2018 Littelfuse Protection Relays & Controls
SE-CS30 SERIES
Ordering Information
ORDERING NUMBER WINDOW SIZE, ID WEIGHT
SE-CS30-26 26 mm (1.0”) 0.5 kg (1.0 lb)
SE-CS30-70 70 mm (2.8”) 1.2 kg (2.5 lb)
SE-CS30-4 95 mm (3.7”) 1.3 kg (3.0 lb)
SE-CS30-5 140 mm (5.5”) 2.1 kg (4.6 lb)
SE-CS30-8 200 mm (7.9”) 4.3 kg (9.4 lb)
www.littelfuse.com/se-cs30
Rev: 1-A-060418
Accessories
Current Transformers
© 2018 Littelfuse Protection Relays & Controls
SE-CS30 SERIES
S E - C S 3 0 - 2 6
LR 53428
USC
R
C U R R E N T S E N S O R
R
68.0
(2.68)
1 7. 0
(0.67)
26.5
(1.04)
M5 SCREWS
TOP MOUNTING DETAIL
68.0
(2.68)
34.0
(1.34)
52.5
(2.07)
42.6
(1.68)
M4 OR 8-32 TAP
25.0
(0.98)
110.0 MAX
(0.43)
72.0
(2.83)
34.0
(1.34)
26.0
(1.02)
5.0
(0.20)
5.0
(0.20)
58.0
(2.28)
FRONT
7. 0
(0.87)
4.0 (0.16) Ø
RECESSED FOR
7-mm HEX NUT
3.0 (0.12) DEEP
SIDE
26.5
(1.04)
52.5
(2.07)
MOUNTING FOOT
INSTALLA TION
TOOL
DETAIL ‘A’
NOTES:
1. DIMENSIONS IN MILLIMETRES (INCHES).
2. PRESS MOUNTING FEET IN PLACE USING
INSTALLATION TOOL PROVIDED (DETAIL ‘A’).
3. MOUNTING SCREWS: M4 OR 8-32.
4. RoHS COMPLIANT.
5. EN 60044-1 COMPLIANT.
Dimensions and Mounting Diagram
SE-CS30-26
www.littelfuse.com/se-cs30
Rev: 1-A-060418
Accessories
Current Transformers
© 2018 Littelfuse Protection Relays & Controls
SE-CS30 SERIES
LR 53428
USC
R
R
121.0
(4.76)
20.5
(0.81)
30.0
(1.18)
M5 SCREWS
TOP MOUNTING DETAIL
121.0
(4.76)
80.0
(3.15)
56.0
(2.21)
46.0
(1.81)
NOTE 3
SE-CS30-70
CURRENT SENSOR
25.0
(0.98)
138.0 MAX
(5.43)
69.8
(2.75)
5.5
(0.22)
5.5
(0.22)
110.0
(4.33)
FRONT SIDE
22.0
(0.87)
Ø 5.0 (0.20)
RECESSED FOR
8-mm HEX NUT
1.0 (0.04) DEEP
30.0
(1.18)
126.0
(4.96)
56.0
(2.21)
MOUNTING FOOT
INSTALLATION
TOOL
DETAIL ‘A’
NOTES:
1. DIMENSIONS IN MILLIMETRES (INCHES).
2. PRESS MOUNTING FEET IN PLACE USING
INSTALLATION TOOL PROVIDED (DETAIL ‘A’).
3. MOUNTING SCREWS: M4 OR 8-32.
4. RoHS COMPLIANT.
5. EN 60044-1 COMPLIANT.
Dimensions and Mounting Diagram
SE-CS30-70
www.littelfuse.com/se-cs30
Rev: 1-A-060418
Accessories
Current Transformers
© 2018 Littelfuse Protection Relays & Controls
SE-CS30 SERIES
TOP (COVER REMOVED)
MOUNTING DETAIL
72.0
(2.83)
FLUX
CONDITIONER
BOTTOM
NOTES:
1. DIMENSIONS IN MILLIMETRES (INCHES).
2. MOUNTING SCREWS: M5 OR 10-32.
3. RoHS COMPLIANT.
4. CE COMPLIANT.
C
D
J
H
G
F
14.0
(0.55)
B
1.7
(0.07)
SE-CS30-8
OUTLINE
A
E
FRONT
L
G
D
C
J
I
K
SE-CS30-5 SE-CS30-8
DIMENSIONS
A95.0 (3.74)
B
C
D
E
F
G
H
I
J
K
L
175.0 (6.89)
158.0 (6.22)
141.0 (5.55)
82.0 (3.22)
32.0 (1.26)
17.5 (0.69)
15.0 (0.59)
33.0 (1.30)
9.0 (0.35)
40.0 (1.57)
5.3 (0.21)
130.0 (5.12)
218.0 (8.78)
203.0 (7.99)
178.0 (7.01)
103.5 (4.07)
32.0 (1.26)
11.0 (0.43)
13.3 (0.52)
34.0 (1.34)
11.0 (0.43)
40.0 (1.57)
7.0 (0.28)
SE-CS30-4
200.0 (7.87)
309.0 (12.17)
290.5 (11.44)
267.5 (10.50)
150.0 (5.90)
34.0 (1.34)
11.0 (0.43)
13.3 (0.52)
43.0 (1.69)
11.5 (0.45)
50.0 (1.97)
7.0 (0.28)
50.0
(1.97)
Dimensions and Mounting Diagram
SE-CS30-4, SE-CS30-5, and SE-CS30-8
Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not
designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.
