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Current Transformers

EIG stocks multiple types of current transformers for metering applications.

  • Solid core CTs to use in revenue grade applications. Solid core current transformers have a core that is sealed to preserve the accuracy of the CT by protecting it from debris. For solid core current transformers, you must disconnect the conductor before installation.
  • Split core CTs have a hinge that enables installation without power interruption or the need to disconnect wires. Split core current transformers are ideal for retrofit and metering applications that are semi-permanent.
  • mV CTs are ideal for submetering and small load applications. They are compact enough to fit inside panel boxes and small enclosures while achieving ANSI accuracy and linearity.

See the current transformers listed below. You can view the data sheet or click Buy Now to order the current transformers.

Solid Core
Split Core
mV CTs

Solid Core Instrument Transformers

5 A Secondary CTs

Ratio Part No. Window Accuracy Burden
50/5A EI-2SFT-500 1.13″ +/- 3% 1.5
100/5A EI-2SFT-101 1.13″ +/- 1% 2.0
200/5A EI-2SFT-201 1.13″ +/- 1% 4.0

ei-2sft-ct-dimensions-033022
Ratio Part No. Window Accuracy Burden
400/5A EI-5SFT-401 1.56″ +/- 1% 12.5

ei-5sft-ct-dimensions-033022
Ratio Part No. Window Accuracy Burden
50/5A EI-2DARL-500 1.00″ +/- 4.8% 2.5
100/5A EI-2DARL-101 1.00″ +/- 1.2% 5.0
200/5A EI-2DARL-201 1.00″ +/- 0.3% 12.5

ei-2darl-ct-dimensions
Ratio Part No. Window Accuracy Burden
400/5A EI-5ARL-401 1.56″ +/- 0.3% 20

ei-5arl-ct-dimensions
Ratio Part No. Window Accuracy Burden
600/5A EI-7RL-601 2.50″ +/- 1% 30
800/5A EI-7RL-801 2.50″ +/- 1% 35

ei-7rl-ct-dimensions
Ratio Part No. Window Accuracy Burden
1200/5A EI-76RL-122 3.00″ +/- 1% 10.0

ei-76arl-ct-dimensions
Ratio Part No. Window Accuracy Burden
1600/5A EI-8RL-162 3.25″ +/- 0.3% 100

ei-8rl-ct-dimensions
Ratio Part No.
CT Shorting Block EI-SB-6TC
ei-ct-shorting-block-dimensions

Split Core Instrument Transformers

1 A Secondary CTs

Ratio Part No. Window Accuracy Burden
60/1A EI-WC2-060-RA01 1.0″ x 1.4″ 1.0% –
100/1A EI-WC2-100-RA01 1.0″ x 1.4″ 1.0% –
200/1A EI-WC2-200-RA01 1.0″ x 1.4″ 0.5% –
400/1A EI-WC2-400-RA01 1.0″ x 1.4″ 0.5% –

ei-wc2-series-ct-dimensions
Ratio Part No. Window Accuracy Burden
100/5A EI-WC4-100-RA05 1.3″x1.7″ 1.0% 1.50
200/5A EI-WC4-200-RA05 1.3″ x 1.7″ 0.5% 2.10
300/5A EI-WC4-300-RA05 1.3″ x 1.7″ 0.5% 2.40
400/5A EI-WC4-400-RA05 1.3″ x 1.7″ 0.5% 2.75

ei-wc4-series-ct-dimensions
Ratio Part No. Window Accuracy Burden
400/5A EI-WC5-400-RA05 2.00″ x 3.50″ 0.75% 2.25
600/5A EI-WC5-600-RA05 2.00″ x 3.50″ 0.50% 2.75
800/5A EI-WC5-800-RA05 2.00″ x 3.50″ 0.50% 3.75

ei-wc5-series-ct-dimensions
Ratio Part No. Window Accuracy Burden
600/5A EI-3SP-600-00 2.19″ x 3.25″ 1.0% 7.5
800/5A EI-3SP-800-00 2.19″ x 3.25″ 1.0% 10

ei-3sp-series-ct-dimensions
Ratio Part No. Window Accuracy Burden
1200/5A EI-5SP-1200-00 2.88″ x 4.24″ 1.0% 10

ei-5sp-series-ct-dimensions
Ratio Part No. Window Accuracy Burden
1600/5A EI-7SP-1600-00 2.88″ x 6.25″ 1.0% 25

ei-7sp-series-ct-dimensions
Ratio Part No. Window Accuracy Burden
1000/5A EI-WC6-1000-RA05 2.00″ x 5.50″ 0.5% 5.00
1200/5A EI-WC6-1200-RA05 2.00″ x 5.50″ 0.5% 5.25
1600/5A EI-WC6-1600-RA05 2.00″ x 5.50″ 0.5% 6.25
2000/5A EI-WC6-2000-RA05 2.00″ x 5.50″ 0.5% 8.00

ei-wc6-series-ct-dimensions
Ratio Part No. Window Accuracy Burden
3000/5A EI-91SP-3000-00 4.00″ x 7.50″ 1.0% 50
4000/5A EI-91SP-4000-00 4.00″ x 7.50″ 1.0% 50

ei-91sp-series-ct-dimensions

mV Current Transformers

Ratio Part No. Window Accuracy Burden
50 A/0.333 V EI-ECSL15-50 0.47″ 0.5% 5 VA
100 A/0.333 V EI-ECSL15-100 0.47″ 0.5% 5 VA
200 A/0.333 V EI-ECSL15-200 0.47″ 0.5% 5 VA

Buy current transformers
Ratio Part No. Window Accuracy Burden
400 A/0.333 V EI-ECSL40-400 1.57″ 0.5% 5 VA

Buy current transformers

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