The SCTK731Y series split-core current transformer is designed for current measurement and monitoring in new or existing power distribution networks. The product uses a snap-fit split-core structure that allows quick installation without disconnecting or removing cables or busbars. The wide window design accommodates large-diameter cables or busbars.The secondary winding has a built-in precision parallel resistor, providing a safe low-voltage output without the need for external sampling resistors.The compact size and easy installation, with multiple sizes available to adapt to various existing installation conditions.It is widely used for current measurement, monitoring, and protection in power lines and equipment, as well as current and power measurement for motors, lighting, air compressors, HVAC, and automation control systems, as well as energy monitoring and relay protection devices.
Features:
- Test range: 0.5 to 6000A AC input, output of 0.333V or 0-5A
- Wide inner window,allowing clamping of big cables or bus-bars
- Wide range of sizes to accommodate all the existing installation
- Small size and easy mounting
- High accuracy and reliability
Applications:
- Current, power, energy and monitoring devices
- Current and power measurement for electric motors, lighting, air compressor,heating and ventilation system, air-condition equipment and automation – control system.
- Current measurement, monitoring and protection for electrical wiring and equipment
Electrical Parameter
| Rated Input |
0.5A-6000A |
| Measuring range |
10%In-130%In |
| Rated Output |
0.333V(AC) or 0-5A |
| Ratio |
≤± 0.1% |
| Phase angle |
≤ ±5min |
| Insulation Resistance |
DC500V/100MΩmin |
Mechanical Parameter
| Case |
PC/UL94-V0 |
| Bobbin |
PC |
| Core |
Silicon |
| Internal structure |
Epoxy |
| Construction |
Tie |
| Operating Temp |
－25℃～＋75℃ |
| Operating Humidity |
≤85% |
| Output Connection |
Terminal or UL1015 22AWG Wire 1.5m |
Type selection
|
P/N
|
Rated Input
(A)
|
Output
(A)
|
Accuracy |
Dimensions(mm) |
|
|
|
|
A |
B |
C |
D |
E |
F |
G |
H |
I |
|
SCTK731Y(33)
|
100-400A
|
1A/5A
|
0.2,0.5,1.0
|
32
|
32
|
43
|
96
|
96
|
32
|
32
|
50
|
32
|
|
SCTK731Y(34)
|
100-600A
|
1A/5A
|
0.2,0.5,1.0
|
32
|
42
|
43
|
96
|
106
|
32
|
32
|
50
|
32
|
|
SCTK731Y(35)
|
100-1000A
|
1A/5A
|
0.2,0.5,1.0
|
32
|
52
|
43
|
96
|
116
|
32
|
32
|
50
|
32
|
|
SCTK731Y(36)
|
100-1200A
|
1A/5A
|
0.2,0.5,1.0
|
32
|
62
|
43
|
96
|
126
|
32
|
32
|
50
|
32
|
|
SCTK731Y(38)
|
200-1500A
|
1A/5A
|
0.2,0.5,1.0
|
32
|
82
|
43
|
96
|
146
|
32
|
32
|
50
|
32
|
|
SCTK731Y(310)
|
250-2000A
|
1A/5A
|
0.2,0.5,1.0
|
32
|
102
|
43
|
96
|
166
|
32
|
32
|
50
|
32
|
|
SCTK731Y(312)
|
500-2500A
|
1A/5A
|
0.2,0.5,1.0
|
32
|
122
|
43
|
96
|
186
|
32
|
32
|
50
|
32
|
|
SCTK731Y(313)
|
500-3000A
|
1A/5A
|
0.2,0.5,1.0
|
32
|
132
|
43
|
96
|
196
|
32
|
32
|
50
|
32
|
|
SCTK731Y(44)
|
100-600A
|
1A/5A
|
0.2,0.5,1.0
|
42
|
42
|
53
|
106
|
106
|
32
|
32
|
50
|
32
|
|
SCTK731Y(45)
|
100-1000A
|
1A/5A
|
0.2,0.5,1.0
|
42
|
52
|
53
|
106
|
116
|
32
|
32
|
50
|
32
|
|
SCTK731Y(46)
|
100-1200A
|
1A/5A
|
0.2,0.5,1.0
|
42
|
62
|
53
|
106
|
126
|
32
|
32
|
50
|
32
|
|
SCTK731Y(48)
|
200-1500A
|
1A/5A
|
0.2,0.5,1.0
|
42
|
82
|
53
|
106
|
146
|
32
|
32
|
50
|
32
|
|
SCTK731Y(410)
|
250-2000A
|
1A/5A
|
0.2,0.5,1.0
|
42
|
102
|
53
|
106
|
166
|
32
|
32
|
50
|
32
|
|
SCTK731Y(412)
|
500-2500A
|
1A/5A
|
0.2,0.5,1.0
|
42
|
122
|
53
|
106
|
186
|
32
|
32
|
50
|
32
|
|
SCTK731Y(413)
|
500-3000A
|
1A/5A
|
0.2,0.5,1.0
|
42
|
132
|
53
|
106
|
196
|
32
|
32
|
50
|
32
|
|
SCTK731Y(55)
|
100-1000A
|
1A/5A
|
0.2,0.5,1.0
|
52
|
52
|
63
|
116
|
116
|
32
|
32
|
50
|
32
|
|
SCTK731Y(56)
|
100-1200A
|
1A/5A
|
0.2,0.5,1.0
|
52
|
62
|
63
|
116
|
126
|
32
|
32
|
50
|
32
|
|
SCTK731Y(58)
|
200-1500A
|
1A/5A
|
0.2,0.5,1.0
|
52
|
82
|
63
|
116
|
146
|
32
|
32
|
50
|
32
|
|
SCTK731Y(510)
|
250-2000A
|
1A/5A
|
0.2,0.5,1.0
|
52
|
102
|
63
|
116
|
166
|
32
|
32
|
50
|
32
|
|
SCTK731Y(512)
|
500-2500A
|
1A/5A
|
0.2,0.5,1.0
|
52
|
122
|
63
|
116
|
186
|
32
|
32
|
50
|
32
|
|
SCTK731Y(513)
|
500-3000A
|
1A/5A
|
0.2,0.5,1.0
|
52
|
132
|
63
|
116
|
196
|
32
|
32
|
50
|
32
|
|
SCTK731Y(516)
|
1000-5000A
|
1A/5A
|
0.2,0.5,1.0
|
52
|
162
|
63
|
116
|
226
|
32
|
32
|
50
|
32
|
|
SCTK731Y(66)
|
100-1200A
|
1A/5A
|
0.2,0.5,1.0
|
62
|
62
|
73
|
126
|
126
|
32
|
32
|
50
|
32
|
|
SCTK731Y(68)
|
200-1500A
|
1A/5A
|
0.2,0.5,1.0
|
62
|
82
|
73
|
126
|
146
|
32
|
32
|
50
|
32
|
|
SCTK731Y(610)
|
250-2000A
|
1A/5A
|
0.2,0.5,1.0
|
62
|
102
|
73
|
126
|
166
|
32
|
32
|
50
|
32
|
|
SCTK731Y(612)
|
500-2500A
|
1A/5A
|
0.2,0.5,1.0
|
62
|
122
|
73
|
126
|
186
|
32
|
32
|
50
|
32
|
|
SCTK731Y(613)
|
500-3000A
|
1A/5A
|
0.2,0.5,1.0
|
62
|
132
|
73
|
126
|
196
|
32
|
32
|
50
|
32
|
|
SCTK731Y(616)
|
1000-5000A
|
1A/5A
|
0.2,0.5,1.0
|
62
|
162
|
73
|
126
|
226
|
32
|
32
|
50
|
32
|
|
SCTK731Y(88)
|
200-1500A
|
1A/5A
|
0.2,0.5,1.0
|
82
|
82
|
93
|
146
|
146
|
32
|
32
|
50
|
32
|
|
SCTK731Y(810)
|
250-2000A
|
1A/5A
|
0.2,0.5,1.0
|
82
|
102
|
93
|
146
|
166
|
32
|
32
|
50
|
32
|
|
SCTK731Y(812)
|
500-2500A
|
1A/5A
|
0.2,0.5,1.0
|
82
|
122
|
93
|
146
|
186
|
32
|
32
|
50
|
32
|
|
SCTK731Y(813)
|
500-3000A
|
1A/5A
|
0.2,0.5,1.0
|
82
|
132
|
93
|
146
|
196
|
32
|
32
|
50
|
32
|
|
SCTK731Y(814)
|
800-4000A
|
1A/5A
|
0.2,0.5,1.0
|
82
|
142
|
93
|
146
|
206
|
32
|
32
|
50
|
32
|
|
SCTK731Y(816)
|
1000-5000A
|
1A/5A
|
0.2,0.5,1.0
|
82
|
162
|
93
|
146
|
226
|
32
|
32
|
50
|
32
|
|
SCTK731Y(1010)
|
250-4000A
|
1A/5A
|
0.2,0.5,1.0
|
102
|
102
|
113
|
166
|
166
|
32
|
32
|
50
|
32
|
|
SCTK731Y(1111)
|
250-4000A
|
1A/5A
|
0.2,0.5,1.0
|
112
|
112
|
123
|
176
|
176
|
32
|
32
|
50
|
32
|
|
SCTK731Y(1212)
|
500-4000A
|
1A/5A
|
0.2,0.5,1.0
|
122
|
122
|
133
|
186
|
186
|
32
|
32
|
50
|
32
|
|
SCTK731Y(1313)
|
500-5000A
|
1A/5A
|
0.2,0.5,1.0
|
132
|
132
|
143
|
196
|
196
|
32
|
32
|
50
|
32
|
|
SCTK731Y(1515)
|
600-5000A
|
1A/5A
|
0.2,0.5,1.0
|
152
|
152
|
163
|
216
|
216
|
32
|
32
|
50
|
32
|
|
SCTK731Y(1616)
|
800-5000A
|
1A/5A
|
0.2,0.5,1.0
|
162
|
162
|
173
|
226
|
226
|
32
|
32
|
50
|
32
|
|
SCTK731Y(1818)
|
1000-5000A
|
1A/5A
|
0.2,0.5,1.0
|
182
|
182
|
193
|
246
|
246
|
32
|
32
|
50
|
32
|
|
SCTK731Y(2020)
|
1000-6000A
|
1A/5A
|
0.2,0.5,1.0
|
202
|
202
|
213
|
266
|
266
|
32
|
32
|
32
|
50
|
Notes: Product specifications can be customized
FAQ
Q: How to choose between 0.333V and 0-5A outputs?
A: 0.333V output is a low-voltage signal, suitable for electronic energy meters, PLCs, and voltage-input measurement instruments. 0-5A output is a traditional current signal, suitable for mechanical meters, relays, and protection devices. Please choose based on your measurement equipment input interface.
Q: What is the function of the built-in precision resistor?
A: The secondary winding has a built-in precision parallel resistor. It converts the current signal directly into a safe low-voltage output, eliminating the need for external sampling resistors. This simplifies installation, improves safety, and saves component costs and installation space.
Q: What applications can the 0.5-6000A measuring range meet?
A: The ultra-wide 0.5-6000A measuring range covers various applications from small-current precision monitoring to large industrial power distribution systems, suitable for fine energy metering, motor protection, main distribution line monitoring, and many other scenarios.
Q: How to apply for samples? What is the lead time?
A: You can submit a sample application through our website or email. Please provide your company information and target model. Samples are free of charge and will be shipped within 3-5 working days. Mass order lead time is generally 2-8 weeks.
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