Dongfa Intelligent is a China-based manufacturer supplying the Universal Intelligent Air Circuit Breaker ACB for low-voltage power distribution systems. The 1600A frame size supports different low-voltage distribution applications and integrates an intelligent controller, shunt trip, undervoltage release, closing solenoid, and motor operating mechanism. The main control components support AC220V, AC380V, DC110V, and DC220V, while the intelligent controller supports AC220V, AC380V, DC110V, DC220V, and DC24V. The specific configuration can be selected according to the available auxiliary power supply and application requirements.
The Universal Intelligent Air Circuit Breaker ACB supports multiple AC and DC control voltage configurations. This allows the control components to be matched with different auxiliary power systems without changing the basic breaker frame configuration.
The operating mechanism supports both motor-operated and manual operation. The specified operating performance includes 3,000 total operating cycles, consisting of 500 energized cycles and 2,500 non-energized cycles.
Motor operation and manual operation are each specified for 1,500 cycles, providing two operating methods for different control and maintenance requirements.
The intelligent controller supports AC220V, AC380V, DC110V, DC220V, and DC24V. This range allows the controller power supply to be selected according to the auxiliary control system available at the installation site.
The undervoltage release monitors the control voltage and operates according to defined voltage thresholds. Its operating characteristics include the following ranges:
| Voltage Range | Operating Condition |
| 35% - 70% Ue | Reliably opens the breaker |
| Below 35% Ue | The breaker cannot close |
| 85% - 110% Ue | Reliably closes the breaker |
If the voltage recovers to 85% Ue within half of the selected delay time, the breaker does not open. The delay accuracy is ±10%.
The undervoltage release can be configured with 1s, 3s, or 5s delay settings, or with instantaneous operation. The appropriate configuration can be selected according to the control system requirements and the expected voltage fluctuation conditions.
| Parameter | Specification |
| Product Type | Universal Intelligent Air Circuit Breaker ACB |
| Frame Size Rated Current | 1600A |
| Operating Cycles per Hour | 20 cycles/hour |
| Total Operating Cycles | 3,000 cycles |
| Energized Operating Cycles | 500 cycles |
| Non-Energized Operating Cycles | 2,500 cycles |
| Motor Operating Cycles | 1,500 cycles |
| Manual Operating Cycles | 1,500 cycles |
| Shunt Trip Power | AC220V 24VA; AC380V 36VA; DC110V 24W; DC220V 24W |
| Undervoltage Release Power | AC220V 24VA; AC380V 36VA |
| Closing Solenoid Power | AC220V 24VA; AC380V 36VA; DC110V 24W; DC220V 24W |
| Motor Operating Mechanism Power | AC220V 85VA; AC380V 85VA; DC110V 85W; DC220V 85W |
| Intelligent Controller Power | AC220V, AC380V, DC110V, DC220V, DC24V |
| Undervoltage Release Delay | 1s / 3s / 5s / Instantaneous ±10% |
Before ordering, confirm the 1600A frame size, control power voltage, trip unit type, operating mechanism, intelligent controller power supply, and required quantity. For projects involving replacement or customized configurations, mounting dimensions and existing product information should also be provided.
For replacement applications, provide the original breaker model, control power voltage, trip unit type, operating mechanism type, mounting dimension drawing, and quantity. Nameplate information and existing technical documents can also be used to check the required configuration.
The control power supply should be checked together with the shunt trip, undervoltage release, closing solenoid, motor operating mechanism, and intelligent controller. For the Universal Intelligent Air Circuit Breaker ACB, selecting the frame current alone is not sufficient for confirming the complete control configuration.
The available auxiliary power capacity should also be checked when multiple control components share the same auxiliary power system.
Dongfa Intelligent develops and manufactures high-voltage electrical products and electromagnetic coils, including vacuum circuit breakers, vacuum load switches, disconnect switches, and CD17, CD10, FN25, FN12, ZN7, ZK1, and CKG4 coil series. OEM/ODM services are available for customers requiring product customization based on drawings, technical specifications, and project requirements.
The company operates under ISO 9001, ISO 14001, and ISO 45001 management systems. Relevant products have undergone type testing by the National High-Voltage Electrical Apparatus Quality Supervision and Inspection Center and Xi'an High-Voltage Apparatus Research Institute, with products manufactured according to applicable GB and IEC requirements.
Dongfa Intelligent has provided OEM/ODM services since 2022 and supports customization, batch production, customs clearance, and export arrangements. Its overseas business covers Southeast Asia, the Middle East, Africa, and other markets.
The 1600A configuration of the Universal Intelligent Air Circuit Breaker ACB can be used for low-voltage power distribution applications where the required frame current, control circuit, trip unit, and operating mechanism match the project requirements.
First confirm whether the existing control system uses AC or DC auxiliary power, then check the required voltage for the shunt trip, undervoltage release, closing solenoid, motor operating mechanism, and intelligent controller.
Please provide the original breaker model, control power voltage, trip unit type, operating mechanism type, mounting dimension drawing, and quantity. Existing nameplate information can also help confirm the replacement configuration.
Time-delay options include 1s, 3s, and 5s and can be selected according to the required control response. Instantaneous operation can be selected when no time delay is required.
The intelligent controller supports AC220V, AC380V, DC110V, DC220V, and DC24V. The selected power supply should match the available auxiliary control system.
Yes. The operating mechanism supports both motor operation and manual operation. The specified operating performance includes 1,500 motor operating cycles and 1,500 manual operating cycles.
Standard products generally require 7-15 working days, while customized products generally require 15-30 working days. The final lead time is confirmed according to the selected configuration and order requirements.
For quotation and technical configuration, please provide the frame rated current, control power voltage, trip unit type, operating mechanism type, intelligent controller power requirement, and quantity.
For replacement projects, please also provide the original product model and mounting dimension drawing so the required configuration can be checked before quotation.
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No. 281, Wei 18th Road, Yueqing Economic Development Zone, Yueqing, Wenzhou, Zhejiang, China
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