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Powering business worldwide
Eaton delivers the power inside hundreds of products that are answering the demands of today's fast changing world.
We help our customers worldwide manage the power they need for buildings, aircraft, trucks, cars, machinery and entire businesses. And we do it in a way that consumes fewer resources.
Next generation transportation
Eaton is driving the
development of new
technologies - from hybrid
drivetrains and emission control systems to advanced engine
components - that reduce fuel consumption and emissions in trucks and cars.
Higher expectations
We continue to expand our aerospace solutions and services to meet the needs of new aviation platforms, including the high-flying light jet and very light jet markets.
Building on our strengths
Our hydraulics business combines localised service and support with an innovative portfolio of fluid power solutions to answer the needs of global infrastructure projects, including locks, canals and dams.
Powering Greener Buildings and Businesses
Eaton's Electrical Group is a leading provider of power quality, distribution and control solutions that increase energy efficiency and improve power quality, safety and reliability. Our solutions offer a growing portfolio of "green" products and services, such as energy audits and real-time energy consumption monitoring. Eaton's Uninterruptible Power Supplies (UPS), variable-speed drives and lighting controls help conserve energy and increase efficiency.
Eaton's range of SF6 free switchgear for Medium Voltage
An Eaton Green Solution
Eaton Corporation is a worldwide leader in the design, manufacture, and sale of safe, reliable and high-performance medium voltage power distribution equipment in accordance with lEC, ANSI and GB / DL standards
Complete Global Medium Voltage Switchgear Solutions
Eaton, a premier leader in designing and manufacturing power distribution and protection equipment in the electrical industry, offers a comprehensive range of medium voltage (MV) solutions to meet the needs of virtually every application. From products that feature cutting-edge design that allow for easy access, maintenance and space savings, to arc-resistant products that enhance safety, Eaton's medium voltage solutions provide a variety of products for every need. Additionally, Eaton's global service network provides maximum customer support in all regions of the world.
As one of the few completely vertically integrated and diversified industrial manufacturers in the world, Eaton designs not only MV assemblies, but also the key components that comprise the MV solutions – from steel housing and circuit breaker compartments to vacuum interrupters, circuit breakers, bus systems and fuses.
Eaton's MV heritage, strengthened by acquisitions such as Westinghouse DCBU, Cutler Hammer, MEM and Holec, has resulted in breakthrough MV technologies and numerous international patents over the years.
Part of Eaton's complete electrical PowerChain Solutions - which help businesses minimize risks while realizing greater reliability, cost efficiencies, capital utilization and safety - Eaton's medium voltage equipment meets all applicable standards and certifications such as IEC, NEMA / ANSI, GB / DL, UL, IEEE, KEMA and CSA.
When it comes to medium voltage solutions, you can trust the one name with a long history of proven performance: Eaton.
40.5kV E-VAC Medium Voltage Vacuum Circuit Breaker
Eaton Electrical Sector
E-VAC vacuum circuit breaker, which was elaborately designed and manufactured by Eaton Electric Group, is an indoor medium voltage vacuum circuit breaker employing encapsulation insulation. The product complies with the national standard GB/T 1984 and international standard IEC 62271-100, and is the best choice for control and protection of medium voltage transmission and distribution systems. Eaton provides floor mounted draw-out type and fixed type circuit breakers to meet varied needs of customers. Having passed high-altitude tests, those products are suitable for use in high-altitude areas.
Eaton Electrical Sector, as the largest business unit of Eaton Group, has high reputation in the manufacturing and services regarding electrical control, power distribution, industrial control, and power quality. It also provides excellent services and advance products in research, design, manufacturing, and applications. Eaton Electrical Sector has a lot of famous brands, e.g., Westinghouse, Holec, Cutler-Hammer and Powerware. Meantime, it inherits and carries forward the technologies and engineering experience of those brands. Eaton continues to insist on the traditions behind those brands and will carry forward their unique advantages to provide customers in China and the rest of the world with effective solutions and services.
Eaton is a leader in power distribution
Eaton integrates its vacuum technology, design achievements, and more than a century of rich experience of Westinghouse, Cutler-Hammer and Holec.
Eaton has been engaging in circuit breaker manufacturing for more than eight decades. Over the past eight decades, Eaton has been a leader in the global circuit breaker market in terms of technology and philosophy. Nowadays, the green world has strict requirements on medium voltage power switching. Lowered resistance system configuration has imposed stricter requirements on current continuity and breaking capacity. The requirements on compactness and cooling are getting higher and higher. The most ideal solution is a medium voltage circuit breaker that is environment friendly and capable to switch on/off large currents reliably, and does not need unreliable cooling or forced air cooling.
Eaton had been engaging in vacuum interrupter R&D in the 1920s and developing commercial vacuum circuit breakers in the 1960s. So far, it has accumulated more than 70 years of experience in the design and manufacture of circuit breakers and switch cabinets.
Operating environment:
• The ambient temperature shall not be higher than 40°℃ and not lower than-15℃
(If the temperature exceeds this limit, please contact Eaton Company.);
• The altitude shall not be higher than 1,000m; If the altitude exceeds 1,000m please contact Eaton Company.
• The average relative humidity of the air shall not be greater than 95%; the monthly average humidity shall not be higher than 90%; the average saturated vapor pressure shall not be greater than 2.2×10-³MPa; and the monthly average vapor pressure shall not be greater than 1.8×10-³MPa; It's required to prevent condensation in high-humidity environments.
• Max endurable earthquake intensity: Magnitude 8;
• Keep the product away from fire, explosion, serious pollution, chemical corrosion, severe vibration and other hazards.
Product features
• High-end 3D computer-aided design (Pro-Engineer) and dynamic simulation and optimization design (Pro-Mechanical).
• The optimized design of electromagnetic field distribution is capable to minimize partial discharge and local overheating.
• State-of-the-art Eaton vacuum interrupter with high-performance provides excellent large-current and high-breaking performance.
• With superior and reliable solid-sealed insulation performance, the product has passed the condensation test, is suitable for reliable operation in harsh environments, and has a larger creepage distance and electrical clearance which are above the lEC and GB standards.
• Reliable grounding method ensures the grounding continuity of the circuit breaker from the working position to the test position
• High compatibility and multi-scheme design of the product is fully compatible with various mainstream cabinets around the world.
• Rich and diverse accessory solutions can meet varied needs of customers.
The best choice for medium voltage power distribution system control and protection
The operating mechanism of the circuit breaker is a spring energy storage mechanism with excellent performance, which is compact. It is equipped with manual energy storage device and electric energy storage device, which can realize the automatic reclosing function.
The circuit breaker is equipped with manual opening and closing operation button, circuit breaker opening and closing position indicator, spring mechanism energy storage status indicator, switch operation times counter, shunt release, position auxiliary switch, energy storage motor, shunt release, anti-pumping relay.
The following accessories can also be provided according to specific requirements: undervoltage release
The product is proudly certified under the China Environmental Labeling Product Certification (Type Il) and has also obtained the Product Carbon Footprint Certification.
The 3AS4 Vacuum Circuit Breaker meets stringent quality and compliance standards, ensuring environmental responsibility throughout its entire lifecycle—from production and usage to consumption and disposal. With its low toxicity, minimal environmental impact, and resource-saving design, it delivers significant ecological advantages while supporting sustainable development.
Main technical parameters of product
| Item | |
| Rated voltage | 40.5 |
| Rated power frequency withstand voltage (1 min) | 95(2) |
| Rated lightning impulse withstand voltage (peak value) | 185(2) |
| Rated frequency | 50/60 |
| Rated current | 1250 1600 2000 2500 3150 4000A(1) |
| Rated short-circuit breaking current | 31.5/40 |
| Rated short-time withstand current (4s) | 31.5/40 |
| Rated short-circuit making current(peak value) | |
| Rated peak withstand current | |
| Power frequency withstand voltage for secondary circuits (1 min) | |
| Rated single/back-to-back capacitor bank breaking current(3) | |
| Rated capacitor bank inrush making current(3) | 20 (Frequency not greater than 4250 Hz) |
| Opening time(rated voltage) | |
| Closing time(rated voltage) | |
| Mechanical life | |
| Breaking times of rated current | |
| Breaking times of rated short-circuit current | |
| Rated cable-charging switching current | |
| Permissible wearing accumulated depth for movable and fixed contacts | |
| Three-phase contact opening and closing asynchronism | |
| Rated operating voltage for closing | AC 110/220 DC 110/220 |
| Rated operating voltage for opening | |
| Rated voltage of energy charging motor | |
| Energy charging time | |
| classification | C2-E2-M2 |
| Rated operating sequence | O-0.3s-CO-15s-CO |
(2) For higher parameters, pls contact Eaton company.
(3) Rated parameters are provided only when required.
Rated parameters of operating mechanism:
| Rated working voltage (V) | AC,DC110 | AC,DC220 |
| Rated input power of motor (W) | 80 (90*) | 80 (90*) |
| Normal operating voltage range | 85%-110% of rated voltage | 85%-110% of rated voltage |
| Energizing time under rated working voltage | ≤15s | ≤15s |
| Name | Parameters | |
| Rated working voltage (V) | AC110, DC110 | AC220, DC220 |
| Rated working current of closing coil (A) | 2.0 | 1.0 |
| Rated working current of opening coil (A) | 1.8 (2.6*) | 0.9 (1.6*) |
| Normal working voltage range* | Closing: 80%-110% for rated operating voltage Opening: 65%-110% for DC rated operating voltage; 85%-110% for AC rated operating voltage Opening will not occur if less than 30% of rated operating voltage | |
If you have any special needs, please contact us. \*≥2000A or 40kA
Storage
Place the product in a dry and ventilated place and keep it away from serious pollution, chemical corrosion, and severe vibration.
| Rated current (A) | Fixed contact G |
| 1250 | 049 |
| 1600 | 055 |
| 2000 | 079 |
| P | A | B | M | N |
| 280 | 892 | 840 | 718 | 850 |
| 300 | 1092 | 1040 | 758 | 1050 |
| 440 | 1292 | 1240 | 1038 | 1250 |
| Rated current (A) | Fixed contact G |
| 2500 | 0109 |
| 3150NC(1) | 0109 |
| 3150FC | 0109 |
| 4000FC(2) | 0109 |
| P | A | B | M | N |
| 300 | 1092 | 1040 | 758 | 1050 |
| 440 | 1292 | 1240 | 1038 | 1250 |
| Rated Current(A) | X | Y | Z |
| 1250~2000 | 40 | 40 | 80 |
| 2500~4000 | 64 | 43 | 100 |
| P | B | M | N | L1, L2 | Insulating Partition | Option |
| 280 | 840 | 718 | 850 | Dimension and projection direction can be customised | Included | 1 |
| 300 | 1040 | 758 | 1050 | Included | ||
| 440 | 1240 | 1038 | 1250 | according to customer requirements. | Not Included | Optional silicone sleeve and sealing plate |
(2) The 4000FC circuit breaker can be equipped with a fan. If needed, please contact us.
(3) If you need interface size, please contact us.
The diagram shows the circuit breaker in the test position, open, and energy discharged states
os o s t me.
Aur s o ged :1S Auxig o og ug uin n ns eiion V2 t v): BiDc)
| Jumper state JumperConfiguration | JP1 | JP2 | JP3 | JP4 | JP5 | JP6 | JP7 | JP8 | JP9 | |
| With anti-bounce | With locking | √ | √ | √ | √ | 1 | 1 | / | 1 | √ |
| Yo | 1 | 1 | 1 | 1 | √ | √ | √ | √ | √ | |
| Withoutanti-bounce | With locking | √ | √ | √ | √ | / | 1 | 1 | 1 | 1 |
| ockgg | 1 | 1 | 1 | / | √ | √ | √ | √ | 1 | |
| Operating power supply | |||
| JumperO0peraigponeerapply | JP10 | JP11 | |
| AC/DC 220V | 1 | 1 | |
| AC/DC 110V | √ | √ | |
Cog coil :ÒH TOQ Ope noil RoineRnce M Charg mgtor
| Jumperstate JumperConfiguratico | JP8 JP9 | JumperOperaing owerr supply | ||||||
| P11 | ||||||||
| With anti-bounce | With locking | / √ | AC/DC 220V | |||||
| 1 | 1 | |||||||
| Wighoutlocking | √ √ | AC/DC 110V | √ | √ | ||||
| Withoutanti-bounce | With lloking | 1 1 | ||||||
| Yo g | √ 1 | |||||||
In the following figure, the E-VAC circuit breaker is opened and spring is not fully charged.
Juper :P8-P1: V2\~VA4 nterol lk onal) Resistance RO0-R2: Auxio dog o n n) n viton Aniog e n-na) 0 an e led led Ai s o cs biled Aui s i t o n ged H O M L S S Aulay siiitch Chargmgmomotor Ooaenr ncoil Caosicoil
:10 whes t t e e s s mme
1. Circuit Breaker Model
□ E-VAC (Withdrawable) □E-VAC (Fixed)
2. E-VAC Embedded Serial Vacuum Circuit Breakers Parameters
| Circuit Breaker Phase Spacing (mm) | Rated Short Circuit Breaking Current (kA) | Rated Operating Current (A) |
| □ 280 | □25 | □1250 □2500 |
| □300 | □31.5 | □1600 □3150 |
| □400 | □40 | □2000 □4000 |
3. Technical Parameters of Spring Actuator Mechanism
| Opening Power Supply (V) | □DC110 | □AC110 | □DC220 | □AC220 |
| Closing Power Supply (V) | □ DC110 | □AC110 | □ DC220 | □AC220 |
| Charging Motor Power Supply (V) | □DC110 | □AC110 | □DC220 | □AC220 |
4. Optional Configuration (the standard configuration includes anti-pumping device; in case you don't want anti-pumping function, please indicate.)
Closing Interlock Device□ V
Position Interlock □ V
Anti-pumping Relay □ V
Under-voltage Tripper □ V
□ Handle Quantity required
Note: The product technical parameters are subject to change without further notice. Please confirm with Eaton before order.
Eaton is an intelligent power management company dedicated to protecting the environment and improving the quality of life for people everywhere. We make products for the data center, utility, industrial, commercial, machine building, residential, aerospace and mobility markets. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power— today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we're helping to solve the world's most urgent power management challenges and building a more sustainable society for people today and generations to come.
Founded in 1911, Eaton has continuously evolved to meet the changing and expanding needs of our stakeholders. With revenues of nearly $25 billion in 2024, the company serves customers in more than 160 countries. Eaton entered the Chinese market in 1993 and has grown significantly since then. In 2004, Eaton moved its Asia-Pacific headquarters from Hong Kong to Shanghai. Today, Eaton has nearly 8,000 employees and 19 manufacturing facilities in China.
For more information about Eaton China, visit www.eaton.com.cn
