Description
Description of ZYM1E Series Electronic Molded Case Circuit Breaker
The ZYM1E Series Molded Case Circuit Breaker is engineered for AC 50Hz systems, with a rated insulation voltage of 1000V, rated operational voltage up to 690V, and rated current up to 1250A. Ideal for power distribution, infrequent circuit switching, and motor starting, it delivers comprehensive protection against overloads, short circuits, and undervoltage, safeguarding lines and equipment from damage.
Featuring a microprocessor-based intelligent overcurrent release, the breaker offers precise three-stage protection: long-time delay overload, short-time delay short-circuit, and instantaneous short-circuit protection—all fully adjustable to meet diverse load requirements. Additional functions include running current indication, overload pre-alarm, earth fault indication, and release power status display.
Parameter of ZYM1E Series Electronic Molded Case Circuit Breaker
| shell and frame classification | 125 | 250 | 400 | 630 | 800 | 1250 | ||
| technical parameter | ||||||||
| number of poles | 3P、4P | 3P、4P | 3P、4P | 3P、4P | 3P、4P | 3P | ||
| shell and frame rating current | 125 | 250 | 400 | 630 | 800 | 1250 | ||
| Rated current In (A) | 32、63 | Adjustable from 100 to 250 | Adjustable range: 160 to 400 | Adjustable range: 252 to 630 | Adjustable range from 320 to 800 | Adjustable range: 500 to 1250 | ||
| 125 | ||||||||
| Adjustable by category | ||||||||
| rated operational voltage Ue | 400/440V、660/690V | |||||||
| nominal insulation voltage Ui | 100Ov | |||||||
| rated impulse withstand voltage Uimp | 12kV | |||||||
| Selective category | A | B | B | B | B | B | ||
| rated limit short circuit breaking | 400v | M mould | 50 | 50 | 65 | 70 | 70 | 65 |
| Ability Icu (kA) | 440V | H mould | 65 | 85 | 85 | 85 | 85 | 85 |
| 660V | M mould | 15 | 15 | 20 | 30 | 30 | 1 | |
| 690V | H mould | 15 | 15 | 20 | 30 | 30 | 1 | |
| rated operation short circuit breaking | 400v | M mould | 35 | 35 | 50 | 50 | 50 | 42 |
| Ability Ics (kA) | 440V | H mould | 50 | 65 | 65 | 70 | 70 | 70 |
| 660V 690V | M mould | 10 | 10 | 15 | 15 | 15 | 1 | |
| H mould | 10 | 10 | 15 | 15 | 15 | 1 | ||
| Short-term tolerance to Icw/1S (kA) | M mould | 3 | 5 | 10 | 10 | 10 | 10 | |
| H mould | 3 | 5 | 10 | 10 | 10 | 10 | ||
| Number of operation cycles (times) | electric life | 2000 | 2000 | 1500 | 1000 | 1000 | 500 | |
| mechanical life | 10000 | 10000 | 8500 | 5000 | 5000 | 3000 | ||
Feature of ZYM1E Series Electronic Molded Case Circuit Breaker
The ZYM1E Series Electronic Molded Case Circuit Breaker is a versatile and high-performance solution designed for a wide range of low-voltage power distribution and circuit protection applications. With its advanced electronic trip unit, comprehensive protection functions, and robust design, it is widely used in industrial, commercial, infrastructure, and residential sectors to ensure safe and stable operation of electrical systems.
1. Industrial Power Distribution
Ideal for main power distribution and branch circuit protection in manufacturing plants, chemical plants, and processing facilities. It efficiently distributes electrical energy to production lines, machinery, and equipment, providing reliable overload, short-circuit, and undervoltage protection. Its high breaking capacity and anti-vibration performance make it suitable for harsh industrial environments, safeguarding critical production equipment from electrical faults.
2. Commercial Building Electrical Systems
Widely applied in commercial buildings such as office towers, shopping malls, hotels, and hospitals. It serves as a key component in main switchboards and distribution boards, protecting lighting systems, HVAC equipment, elevators, and other commercial electrical loads. The compact design saves installation space, while the isolation function enhances maintenance safety, meeting the power supply and protection needs of modern commercial facilities.
3. Motor Protection and Control
Perfect for the protection of three-phase asynchronous motors, including fans, pumps, compressors, and conveyors. It supports infrequent motor starting and provides precise overload long-time delay, short-circuit short-time delay, and instantaneous protection, effectively preventing motor burnout caused by overloads, phase loss, or short circuits. The adjustable protection characteristics adapt to different motor load requirements, ensuring stable motor operation.
4. Infrastructure and Public Facilities
Used in power distribution systems of infrastructure projects such as power stations, substations, water treatment plants, and transportation hubs (airports, railway stations, ports). It ensures a reliable power supply and fault protection for public facilities, withstanding voltage fluctuations and electrical disturbances, and maintaining the continuity of critical infrastructure operations.
5. Data Centers and Telecommunication Facilities
Suitable for power distribution and protection in data centers, server rooms, and telecommunication base stations. It offers a stable power supply for IT equipment, servers, and communication devices, with overload pre-alarm and fault indication functions enabling timely troubleshooting. The high breaking capacity and short arc duration minimize the impact of faults, ensuring the uninterrupted operation of data and communication systems.
6. Renewable Energy Systems
Applied in solar photovoltaic power generation, wind power systems, and energy storage facilities. It protects inverters, battery packs, and power distribution units, adapting to the special operating conditions of renewable energy systems. The comprehensive protection functions prevent damage to equipment caused by abnormal currents or voltage fluctuations, supporting the stable operation of clean energy projects.
With its excellent performance, flexible protection settings, and wide applicability, the ZYM1E Series Electronic Molded Case Circuit Breaker is an ideal choice for reliable power distribution and circuit protection across various industries and applications.
