benlong 
Línea de producción automática de interruptores automáticos neumáticos (ACB).
This system is dedicated to high-current Air Circuit Breakers (ACB) and complies with IEC and industrial distribution standards. The line achieves precise assembly of the contact system and arc chute and includes automated linkage testing of smart trip units and microprocessors, ensuring ACB’s high breaking capacity and superior digital performance.
Air-operated Circuit Breaker (ACB) Automatic Production Line
The ACB Automated Production Line is totally automated, complete with an assembly machine for Arc Chute, Laser Marking machine, Pad Printing machine, Taping machine and High Voltage Test Areas to manufacture Air Circuit Breakers (A.C.B.s) rated greater than or equal to 6300 A. The line includes an automatic test system for both the A.C.B. and high voltage tests as well as an automated mechanical operation test and bench test for calibration of Electronic Trip Unit (ETU). All stations are coordinated by a central PLC (Programmable Logic Controller) with MES (Manufacturing Execution System) connectivity.
Modular design enables rapid frame size changes for ACBs. Accurate quality tracking throughout the manufacturing process, from component build-up to completion. Optional hermetic welding to attach silver point contact and use of packaging system to create boxed product. Major manufacturers of assembly machines (like CHINT, Delixi, etc.) and major global OEMs (e.g., C&S Electric) are among our customers.
Standard line delivery: 30-45 days | Custom engineering: 90-120 days | Turnkey solution
What is an ACB Automatic Production Line?
An ACB automatic production line is a fully integrated system for assembling and testing air circuit breakers up to 6300A, compliant with IEC 60947-2 for high breaking capacity and digital performance.
Manual workstations plus automatic testing stations will be used to validate complex mechanical assemblies and to perform testing on electronic components.
Long delay, short delay, Instantaneous, Ground Fault, Loop Resistance (200A DC) and Hi-Pot (up to 5000V) Test.
100% automated pass/fail criteria with auditable data per unit.
Real-time data acquisition, OPC UA / Modbus TCP for ERP integration.
Factory & Process Showcase
Technical Specifications and Production Capacity
| Frame size and current rating | 1600A to 6300A (1P, 2P, 3P, 4P ACB) |
|---|---|
| Production cycle time | ≤ 25 seconds per pole | Daily output: 800-1200 poles per 8 hours |
| Testing capabilities | High voltage tester (dielectric strength up to 5kV), bench test for ETU (L-S-I-G curves), contact resistance, insulation resistance, mechanical endurance |
| ETU calibration accuracy | ±3% for overload, short-delay, instantaneous, and ground-fault protection |
| Marking and coding | Máquina de marcado láser (fiber/UV) for permanent marking; pad printing machine (1-2 colors) for logos and ratings |
| Assembly modules | Arc chute assembly machine, tape machine for insulation wrapping, automatic spring mechanism assembly, welding machine for contact tips |
| Sistema de control | PLC (Siemens or Mitsubishi) with HMI, recipe management, remote diagnostic access |
| Optional equipment | Packing machine (cartoning and palletizing), conveyors, automatic tray stacker |
| Power and air supply | 380V ±10% 50Hz | 0.5-0.7MPa compressed air |
Key Technologies and Smart Features
Arc chute assembly machine
Automatic high-speed placement of arc plates and arc chute assembly is made possible through the use of a vision-guided alignment system, which guarantees that the extinquishing performance of the ACB is consistent.
Laser marking and pad printing
Laser marking machine for permanent serial numbers; pad printing machine for logos. Full traceability integration.
High voltage testing and bench test
High voltage tester (dielectric strength). Bench test for ETU protection curves and long-term stability.
PLC-controlled automatic testing
Central PLC manages automatic testing, data acquisition, and pass/fail decisions.
Delixi Electric
C&S Electric
HUYU
Sensemi
CNC Electric
Schneider Electric
TEJIDO
and 20+ global OEMs
Caso de éxito de un cliente
A Europe-based manufacturer of switchgear implemented an ACB automatic production line for their 1600A-4000A frame series. Operating for six months:
La línea alcanzó su plena capacidad IEC 60947-2 compliance and reduced labor cost by 70%.
Aplicaciones y flexibilidad de producción
Entrega y puesta en marcha estándar
Request a Custom ACB Production Line Proposal
Please send us your drawings for ACB products, intended quantity, or any current layout you may have. Our engineers specialize in providing automated line solutions to assemble low voltage circuit breakers.
WhatsApp: +86 150 5837 0007 | Correo electrónico: xsb@benlongkj.cn | Soporte en inglés y chino
Why Choose Benlong as Your Assembly Machine Manufacturer?
- 15+ years as assembly machine manufacturers for circuit breaker automation
- In-house arc chute assembly machine and tape machine design
- Proven laser marking machine and pad printing machine with MES
- PLC-based control with remote diagnostics
- Global service network: Europe, SE Asia, Americas, Middle East
Inclusiones de la línea estándar
Arc chute assembly machine, laser marker machine and pad printing machine (2 total), tape Machine (for insulation wrap), High voltage tester and bench (testing station), Central PLC (with HMI and data logging), welding machine (optional), packing machine (optional)
Preguntas frecuentes
800 to 1200 poles per 8-hour shift. Cycle time ≤25 seconds per pole.
High voltage tester, bench test for ETU curves, contact resistance, insulation resistance, mechanical operation.
With the use of interchangeable fixtures and recipe-based PLC controls, a changeover takes less than 30 min.
Yes. Fully integrated laser marking machine and pad printing machine for traceability and branding.
Welding machine, additional tape machine, packing machine, and conveyors.
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