1© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com SE0205_ZCT • 3/27/2017
One world. One KEMET
Benets
• High sensitivity
• Compact and lightweight
• Laminated iron core
Overview
The ZCT Series are compact molded-type, zero-phase
current transformers ideal for improving the sensitivity,
compactness and lightweight of electric shock prevention.
Applications
Typical applications include electric shock prevention from
earth leakage breakers, short-circuit relays and ground fault
circuit interrupters.
Sensors
ZCT Series Zero-Phase Current Transformers
Ordering Information
MR- 1
Series Shape Classication
MR 1
2
3
4
1–P5
2© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com SE0205_ZCT • 3/27/2017
Sensors – ZCT Series Zero-Phase Current Transformers
Dimensions in mm
Spare solder
<5>
HLD3
D4
D1
D2
H(4.1) 5.0 ± 0.3*
D1
D3
10.5 ± 0.3
D2
Pin
MR-1, 2, 3, 4 MR-1-P5
Product Name D1 (Minimum) D2 (Maximum) D3 (Maximum) D4 H (Maximum) L (±3.0)
MR–1 7.2 19.3 22.4 (5.0) 8.3 45.0
MR–2 8.9 21.8 24.7 (5.0) 8.3 80.0
MR–3 11.0 28.0 30.5 (6.0) 10.5 67.0
MR–4 16.5 32.0 34.5 (7.0) 10.8 67.0
MR–1–P5 7.4 19.3 21.8 (8.0) 8.5 ―
Pin: φ0.8 mm Pin connectors.
* Pin root diameter.
Environmental Compliance
All ZCT sensors are RoHS compliant.
Table 1 – Ratings & Part Number Reference
Part Number
Minimum
Output Voltage
(mV)
Temperature
Characteristics
(−20°C to 80°C)
Maximum
Overinput
Characteristics
(After DC5A
Input)
Measurement
Conditions
MR–1
8±10% 10%
f = 60 Hz
R = 300 Ω
lo = 22.5 mA
MR–2
MR–3
MR–4
MR–1–P5
R = Load resistance
lo = Detection current
3© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com SE0205_ZCT • 3/27/2017
Sensors – ZCT Series Zero-Phase Current Transformers
Precautions
Before Using Zero-Phase Current Transformers
• Do NOT drop or apply mechanical stress as it may change the performance characteristics.
• Do NOT use the current transformers opened between secondary output terminals. Heat build-up in the magnetic core
may occur, resulting in damages to the parts by melting of the coil.
• If the ZCT Series will be used as a current transformer, please contact KEMET for more information.
4© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 • 864-963-6300 • www.kemet.com SE0205_ZCT • 3/27/2017
Sensors – ZCT Series Zero-Phase Current Transformers
KEMET Electronic Corporation Sales Of ces
For a complete list of our global sales of ces, please visit www.kemet.com/sales.
Disclaimer
All product speci cations, statements, information and data (collectively, the “Information”) in this datasheet are subject to change. The customer is responsible for
checking and verifying the extent to which the Information contained in this publication is applicable to an order at the time the order is placed.
All Information given herein is believed to be accurate and reliable, but it is presented without guarantee, warranty, or responsibility of any kind, expressed or implied.
Statements of suitability for certain applications are based on KEMET Electronics Corporation’s (“KEMET”) knowledge of typical operating conditions for such
applications, but are not intended to constitute – and KEMET speci cally disclaims – any warranty concerning suitability for a speci c customer application or use.
The Information is intended for use only by customers who have the requisite experience and capability to determine the correct products for their application. Any
technical advice inferred from this Information or otherwise provided by KEMET with reference to the use of KEMET’s products is given gratis, and KEMET assumes no
obligation or liability for the advice given or results obtained.
Although KEMET designs and manufactures its products to the most stringent quality and safety standards, given the current state of the art, isolated component
failures may still occur. Accordingly, customer applications which require a high degree of reliability or safety should employ suitable designs or other safeguards
(such as installation of protective circuitry or redundancies) in order to ensure that the failure of an electrical component does not result in a risk of personal injury or
property damage.
Although all product–related warnings, cautions and notes must be observed, the customer should not assume that all safety measures are indicted or that other
measures may not be required.
KEMET is a registered trademark of KEMET Electronics Corporation.
