Product Overview
The ASKM7ET Integrated Motor Operate Molded Case Circuit Breaker(MCCB) covers a current range from 63A to 800A.
ASKM7ET features electronically adjustable protection functions based on MCU technology. MCCB supports Manual and Electric opening and closing operations, and has a built-in undervoltage protection module.
It can be directly closed when receiving a closing signal after tripping. Its opening and closing actions are rapid, with the ability to perform real-time detection of curnent and voltage.
It can bo remotely controlled for opening and closing through external signals, and provides status feedback signal output. The MCCB has clear position indication for easy monitoring and maintenance.
Core Functionalities
· Electronic adjustable protection
Based on MCU microprocessor technology, it provides a precisely configurable three-stage protection function. This can be set on-site via the front knob:
Overload long-delay operating current (Ir) Short-delay operating current (Isd) Instantaneous tripping current (Ii)
· Undervoltage trip protection
Undervoltage protection action value ≤ AC160V, recovery value ≥ AC175V; Overvoltage protection action value ≥AC275V, recovery value ≤ AC260V;
Undervoltage release rated: 50Hz, AC230V / AC400V.
· Electric operation function
It supports electric opening and closing of the circuit breaker via external control signals.
· Three-phase voltage status indication
L1, L2, and L3 indicator lights monitor the input voltage in real time: green when normal and red when abnormal.
· Three-phase current monitoring and indication
The A, B, and C indicator lights monitor the load current in real time: green when normal and red when overloaded or abnormal.
· External signal interface
It provides an external control terminal to support receiving external control commands and has a status feedback signal output function.
Features
The ASKM7ET MCCB combines innovative engineering technology with practical advantages. Its integrated structural design ensures stable and reliable operation and high functional integration, making it the first choice for various power distribution systems.
Product Advantages
· Protection functions and control precision: It enables customized and precise protection, perfectly adapting to downstream load characteristics and effectively ensuring continuity of power supply.
· Operating mechanism and reliability: Featuring an integrated design of the motorized operating mechanism and breaker body, it offers a compact structure, precise transmission, and high reliability, significantly reducing failure rates while supporting stable and dependable remote and automatic control.
· Undervoltage protection function: Equipped with an integrated undervoltage protection module, it automatically recloses upon receiving a closing command after voltage recovery without manual reset, simplifying system design, improving power restoration efficiency, and facilitating automated management.
· Condition monitoring and diagnosis: The front panel is equipped with indicator lights, which can monitor and display abnormal three-phase current and voltage status in real time, providing proactive fault warnings and status diagnosis, greatly simplifying daily inspection and troubleshooting processes, and significantly improving operation and maintenance efficiency.
· Attachment integration and extensibility: The modular integrated accessory terminal block design integrates auxiliary contacts, shunt trip signals and control wiring terminals into the same unit, providing ample wiring space and easy operation. It can significantly reduce the risk of missing or incorrect accessory orders, and effectively improve installation efficiency and operational reliability.
· Structural Design and Space Efficiency: It adopts a highly integrated integrated structural design, optimizes the size while achieving the same or higher performance, has a small footprint, and is compatible with compact silent box control cabinets, effectively saving installation space and cabinet costs.
· Intelligentization and Network Access: The product platform reserves standard communication interfaces such as RS485 for functional reserve in subsequent upgrades, enabling seamless integration with Energy Management Systems (EMS) and laying a solid foundation for building an intelligent and digital power distribution network.
Applications
The ASKM7ET Integrated Motor-Operated Molded Case Circuit Breaker is an industry-specific breaker designed for generator parallel operation systems. It adopts an integrated structural design, ensuring stable and reliable operation with a high level of functional integration.
TECHNICAL DATASHEET OFASKM1 THERMOMAGNETICNORMAL PROTECTION MOLDED CASE CIRCUIT BREAKER
Model | ASKM7ET-250A | ASKM7ET-400A | ASKM7ET-800A |
Frame rating current Inm (A) | 250A | 400A | 800A |
Rated current In (A) | 160A | 250A | 400A | 800A |
Overload long-delay setting current Ir1 (A) | 63A/80A 100A/125A 140A/160A | 160A/180A 200A/225A 250A | 200A/225A/ 250A/280A/ 315A/350A/ 400A | 630A/640A 660A/680A/ 700A/720A/ 740A/760A/ 780A/800A |
Rated impulse withstand voltage Uimp (kv) | 12kV |
Rated operating voltage Ue (V) | AC400V/415V AC660V/690V |
Rated insulation voltage Ui (V) | 1000V |
Opening time | 1.5s |
Closing time | 1.2s |
Rated ultimate short-circuit breaking capacity Icu (kA)
| 50kA(AC400V/415V) | 65kA(AC400V/415V) | 65kA(AC400V/415V) |
20kA(AC660V/690V) | 20kA(AC660V/690V) | 20kA(AC660V/690V) |
Rated operating short-circuit breaking capacity Ics (kA)
| 35kA(AC400V/415V) | 50kA(AC400V/415V) | 50kA(AC400V/415V) |
15kA(AC660V/690V) | 15kA(AC660V/690V) | 15kA(AC660V/690V) |
Arc distance (mm) | ≯50(0)² | ≯50(0)² | ≯100(0)² |
