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HEYI Electrical CO.,LTD

Contact person: Bethy

Position: Sales Manager

Tel: 86-577-62659558

Fax: 86-577-61712987

Mobile: 86-13968747975


Skype: bethycai

ADD: #21 ShangYou North 

Road, HuangHua LiuShi YueQing,

Zhe Jiang, CHINA


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 MSQ Series Current transformer

MSQ range of current transformers can be applied to test,control,display and record the running of the electrical 

equipment,and to protect the equipment against the damage,in the AC circuit with the rated voltage value below 720V 

and the frequency of 50-60Hz.The product can be also applied to form a complete set of mine transformer


1: Safe. Easy to install, porttable

2:Wide inner window, allowing clamping of big cables or bus-bars

3:Wide range of sizes to accommodate all the existing installations


1:Current measurement, monitoring and protection for electrical wiring and equipment 

2:Current and power measurement for electric motors, lighting , air compressor , heating and ventilation system, air-condition equipment and automation-control system

3: Current , power and energy monitoring device.

4: Relay prtection device.

Technical Index:

Electrical Parameter
Mechanical Parameter
Frequency 50/60Hz Case PC/UL94-V0
Rated Input 1A-5000A Bobbin PBT
Measuring range 5%In-120%In Core Silicon steel
Rated Output 1A,5A Construction Screw
Ratio Voltage 0.72KV (AC) Operating Temp -25℃~+75℃
Dielectric strength 3.0KV/1mA/1min Operating Humidity ≤85%
Insulation Resistance DC500V/100MΩ min Output Connection Terminal
Technical Parameter

Model Primary / Secondary Busbar Hole Dimensions(mm) Rated Burden (VA) Accuracy Class Rated Voltage
MSQ-30B 5/5A~300/5A busbar 5~7.5 0.5 / 1.0
MSQ-30 30/5A~300/5A φ=30mm
2.5~10 0.5 / 1.0
MSQ-40 100/5A~500/5A
2.5~10 0.5/1.0 0.72KV(AC)
MSQ-60 250/5A~1600/5A φ=60mm
5~15 0.5/1.0
MSQ-85 750/5A~2000/5A φ=85mm
5~15 0.5/1.0
MSQ-100 800/5A~3000/5A φ=100mm
5~15 0.5/1.0
MSQ-125 1000/5A~6000/5A φ=125mm
5~20 0.5/1.0

Dimension of case (mm):

Current Transformer installation way

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