Electrical parameter measurement :U,I,f,P,Q,PF,Ep,Eq,Es[50/51] Overcurrent , 3stages;
[50N/51N]Zero-sequence overcurrent protection (3 stages earth fault);[59] Over voltage protection;[27] Under voltage protection;[81U] Under frequency;[26/63] Non-electricity protection;[79] Auto-reclose;
Application scenario: Municipal construction, hospitals, schools, hotels, commercial buildings, etc.;
Installation method: Embedded installation, snap fixing.
+86-18702106858 / +86-21-69156352
When a severe fault (short-circuit, earth-fault) threatens the network, AM3SE trips the faulty feeder, motor, transformer or busbar in milliseconds, limiting damage and keeping the rest of the system alive. If an abnormal condition (overload, unbalance, under-voltage) appears, it raises an instant alarm so operators can act before costly downtime occurs.
From a single hardware platform AM3SE delivers dedicated protection for every user-side asset: main transformer, incomer, distribution transformer, motor, capacitor bank, PT, busbar and automatic-transfer schemes—ensuring faults are cleared fast, losses are minimized and power stays on.
| Characteristics | AM3SE |
| Power Supply | |
| Rated voltage | AC/DC 110V or AC/DC 220V or DC 48V or DC 24V |
| Range | Rated voltage × (1±20%) |
| Burden | ≤10W ( DC ) |
| PT Inputs | |
| Rated value | AC 100V or |
| V | |
| PT rated secondary range | 0.1V～120V |
| Accuracy | 0.5S |
| Burden | ≤0.5VA (each phase) |
| Voltage withstand | Continuous: 1.2 Un |
| 10s: 2 Un | |
| Phase CT Inputs (Protection Current) | |
| CT rated secondary range | AC 5A or 1A |
| Dynamic | 15 × CT rated current |
| Accuracy | 0.5S |
| Burden | ≤0.5VA (each phase) |
| Thermal withstand | Continuous: 2 In |
| 1s: 40 In | |
| Frequency | |
| Rated frequency | 50Hz or 60Hz |
| Frequency range | 45 ~ 55Hz or 60Hz |
| Accuracy | ±0.1Hz |
| Digital Inputs | |
| Operating nominal voltage | AC/DC 110V or AC/DC 220V or DC48V or DC24V |
| Voltage threshold | 70% of nominal voltage |
| Reset threshold | 55% of nominal voltage |
| Burden | ≤ 1W (each phase) (DC220V) |
| Digital Outputs | |
| Make and carry | ≥ 10000 operations |
| Making capacity | ≥ 1000W, L / R = 40ms |
| Continuous current | ≥ 5A |
| Short duration carry current | ≥ 30A for 200ms |
| Breaking capacity | ≥ 30W, L/R = 40ms |
Power Monitoring Solution
Rated Current 80A Directly
MID Certificated
High Accuracy Class C
35mm DIN Rail Mounted
Pulse Output
4 Modules 72mm Width
For IoT Energy Management, Factory, School
Split Core
Clamp on Installation
High Accuracy Class 0.5
150-1000A Input Current
5A/1A Secondary Output
Application: Renovation Projects
Event recording
Start control function
programmable DI and DO
Profibus-DP communication
Anti-shaking function
Analog output
Event recording
leakage protection
AC380V/690V
programmable DI and DO
Analog output
Anti-shaking function
Split Core
High Accuracy Class 0.5
Current Input 20-6000A
Current Output 5(1)A
Rectangular Hole Design
Measurement of current (I)
Application: Renovation Projects
Founded in 2003, Acrel Co., Ltd.【Stock Code: 300286.SZ】 is a high-tech enterprise specializing in energy management solutions and electrical safety. Headquartered in Shanghai, Acrel offers innovative and sustainable solutions for microgrid energy efficiency and electrical safety. With over 600 patents and software copyrights, Acrel has deployed more than 28,000 system solutions globally, forming a comprehensive "cloud-edge-end" energy internet architecture.
Acrel Co., Ltd. is China Wholesale AM3SE Protection Relay for Medium Voltage Manufacturers and AM3SE Protection Relay for Medium Voltage Factory. Acrel's integrated product ecosystem spans from cloud platform software to end-user components, covering sectors such as power, renewable energy, data centers, smart buildings, transportation, and smart cities. These solutions enable intelligent, real-time energy management, enhancing energy security and reducing operational costs. We offer AM3SE Protection Relay for Medium Voltage for sale.
The company's production facility, Jiangsu Acrel Electric Manufacturing Co., Ltd., adheres to strict quality standards and environmental guidelines, with advanced testing centers and a commitment to lead-free production processes. Acrel's team of over 500 engineers delivers cutting-edge energy efficiency systems and smart energy solutions.
With a strong domestic presence, Acrel is actively expanding internationally, supported by a global network of sales and technical teams and an e-commerce platform that ensures seamless service experiences worldwide. Acrel is proud to help businesses improve efficiency, reduce consumption, and achieve sustainability goals.
Together, we are building a smarter, greener future.
Authorized Patents
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0m²Empowering businesses with our robust capabilities.
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Email: [email protected]
Phone: +86-18702106858 / +86-21-69156352No.253 Yulv Road, Jiading District, Shanghai, PRC 201801
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Wholesale AM3SE Protection Relay for Medium Voltage Suppliers
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