
Modular Contactor Manufacturer
At VIOX Electric, we’ve established ourselves as a leading manufacturer and supplier of high-quality modular contactors designed for reliability and performance in various electrical applications. Our BCH8 and BMC7 series modular contactors represent the pinnacle of engineering excellence, combining innovative design with robust construction to meet the demanding needs of modern electrical systems.
Certified By





AC/DC Modular Contactor - BMC7 Series
AC/DC Modular Contactor - BCH8 Series
BCH8 Manual Modular Contactor
A Brief Self-Nomination: Why Choose VIOX Electric?
With over a decade of experience, VIOX Electric has established itself as a trusted partner in the electrical components industry. The company’s modular contactors adhere to global standards IEC/EN61095 and IEC 60947-4-1, ensuring compatibility and reliability across diverse applications1. VIOX offers customizable solutions, including DC coil configurations and specialized pole arrangements, to meet specific customer needs. Their products feature UL94 V-0 flame-retardant materials and IP40 protection, demonstrating a commitment to safety and sustainability
Custom Solutions: We focus on providing solutions that solve your unique electrical challenges. Whether you need specific configurations, sizes, or capabilities for your modular contactors, we can create a custom solution just for you.
Expert Guidance: Our customer support team comprises industry experts. They will work closely with you to understand your requirements and provide informed, practical solutions to meet your needs.
Advanced Production Techniques: To ensure you receive superior modular contactors, we employ state-of-the-art equipment, materials, and production processes. This guarantees that our solutions are both efficient and durable.

VIOX Excellent material selection, standard Design

Super Energy-Saving
In the working state, the contactor needs to be powered for a long time to keep the coil energized. During this process, a large amount of electrical energy is consumed. The B series contactor, with its optimized electromagnetic system, greatly reduces the holding power of the contactor.

Reduced size by 20%
The width of the B series contactor is much smaller than that of traditional contactors, saving installation space for users, and it can be conveniently installed in standard distribution boxes.

Premium Material Selection
The foundation of product quality lies in the choice of raw materials. The B series contactors are made from carefully selected raw material suppliers, both domestic and international, to achieve reliable quality through premium materials.
MODULAR CONTACTOR DIMENSIONS AND SIZE CHART


1-POLE CONFIGURATIONS (1P, 1 MODULE)
MODEL | IE RATING AC-1 | IE RATING AC-3 | IE RATING AC-7A | IE RATING AC-7B | AVAILABLE COIL VOLTAGES |
---|---|---|---|---|---|
BMC7-16/10 | 16A | 6A | 16A | 7A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-20/10 | 20A | 7A | 20A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-25/10 | 25A | 9A | 25A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-32/10 | 32A | 12A | 32A | 12A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-16/01 | 16A | 6A | 16A | 7A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-20/01 | 20A | 7A | 20A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-25/01 | 25A | 9A | 25A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-32/01 | 32A | 12A | 32A | 12A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
1-POLE CONFIGURATIONS (1P, 2 MODULES)
MODEL | IE RATING AC-1 | IE RATING AC-3 | IE RATING AC-7A | IE RATING AC-7B | AVAILABLE COIL VOLTAGES |
---|---|---|---|---|---|
BMC7-40/10 | 40A | 18A | 40A | 18A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-63/10 | 63A | 25A | 63A | 25A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-40/01 | 40A | 18A | 40A | 18A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-63/01 | 63A | 25A | 63A | 25A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
2-POLE CONFIGURATIONS (2P, 1 MODULE)
MODEL | IE RATING AC-1 | IE RATING AC-3 | IE RATING AC-7A | IE RATING AC-7B | AVAILABLE COIL VOLTAGES |
---|---|---|---|---|---|
BMC7-16/20 | 16A | 6A | 16A | 7A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-20/20 | 20A | 7A | 20A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-25/20 | 25A | 9A | 25A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-32/20 | 32A | 12A | 32A | 12A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-16/11 | 16A | 6A | 16A | 7A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-20/11 | 20A | 7A | 20A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-25/11 | 25A | 9A | 25A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-32/11 | 32A | 12A | 32A | 12A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-16/02 | 16A | 6A | 16A | 7A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-20/02 | 20A | 7A | 20A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-25/02 | 25A | 9A | 25A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-32/02 | 32A | 12A | 32A | 12A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
2-POLE CONFIGURATIONS (2P, 2 MODULES)
MODEL | IE RATING AC-1 | IE RATING AC-3 | IE RATING AC-7A | IE RATING AC-7B | AVAILABLE COIL VOLTAGES |
---|---|---|---|---|---|
BMC7-40/20 | 40A | 18A | 40A | 18A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-63/20 | 63A | 25A | 63A | 25A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-40/11 | 40A | 18A | 40A | 18A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-63/11 | 63A | 25A | 63A | 25A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-40/02 | 40A | 18A | 40A | 18A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-63/02 | 63A | 25A | 63A | 25A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
3-POLE CONFIGURATIONS (3P, 2 MODULES)
MODEL | IE RATING AC-1 | IE RATING AC-3 | IE RATING AC-7A | IE RATING AC-7B | AVAILABLE COIL VOLTAGES |
---|---|---|---|---|---|
BMC7-16/30 | 16A | 6A | 16A | 7A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-20/30 | 20A | 7A | 20A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-25/30 | 25A | 9A | 25A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-32/30 | 32A | 12A | 32A | 12A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-16/03 | 16A | 6A | 16A | 7A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-20/03 | 20A | 7A | 20A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-25/03 | 25A | 9A | 25A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-32/03 | 32A | 12A | 32A | 12A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
3-POLE CONFIGURATIONS (3P, 3 MODULES)
MODEL | IE RATING AC-1 | IE RATING AC-3 | IE RATING AC-7A | IE RATING AC-7B | AVAILABLE COIL VOLTAGES |
---|---|---|---|---|---|
BMC7-40/30 | 40A | 18A | 40A | 18A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-63/30 | 63A | 25A | 63A | 25A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-40/03 | 40A | 18A | 40A | 18A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-63/03 | 63A | 25A | 63A | 25A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
4-POLE CONFIGURATIONS (4P, 2 MODULES)
MODEL | IE RATING AC-1 | IE RATING AC-3 | IE RATING AC-7A | IE RATING AC-7B | AVAILABLE COIL VOLTAGES |
---|---|---|---|---|---|
BMC7-16/40 | 16A | 6A | 16A | 7A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-20/40 | 20A | 7A | 20A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-25/40 | 25A | 9A | 25A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-32/40 | 32A | 12A | 32A | 12A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-16/04 | 16A | 6A | 16A | 7A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-20/04 | 20A | 7A | 20A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-25/04 | 25A | 9A | 25A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-32/04 | 32A | 12A | 32A | 12A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-16/22 | 16A | 6A | 16A | 7A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-20/22 | 20A | 7A | 20A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-25/22 | 25A | 9A | 25A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-32/22 | 32A | 12A | 32A | 12A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-16/31 | 16A | 6A | 16A | 7A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-20/31 | 20A | 7A | 20A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-25/31 | 25A | 9A | 25A | 9A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-32/31 | 32A | 12A | 32A | 12A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
4-POLE CONFIGURATIONS (4P, 3 MODULES)
MODEL | IE RATING AC-1 | IE RATING AC-3 | IE RATING AC-7A | IE RATING AC-7B | AVAILABLE COIL VOLTAGES |
---|---|---|---|---|---|
BMC7-40/40 | 40A | 18A | 40A | 18A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-63/40 | 63A | 25A | 63A | 25A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-40/04 | 40A | 18A | 40A | 18A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-63/04 | 63A | 25A | 63A | 25A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-40/22 | 40A | 18A | 40A | 18A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-63/22 | 63A | 25A | 63A | 25A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-40/31 | 40A | 18A | 40A | 18A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
BMC7-63/31 | 63A | 25A | 63A | 25A | 12V, 24V AC/DC, 48V AC/DC, 110V AC/DC, 230V AC/DC |
VIOX Modular Contactor Installation Guide
Installation of VIOX modular contactors is straightforward, requiring only a DIN rail (35mm), screwdriver, and appropriate copper cables. The process involves three key steps:
01
02
03
For optimal performance, ensure proper torque application and use the recommended cable sizes. This simple installation process, combined with VIOX's precision engineering, guarantees reliable operation in various electrical control applications.
Get Your Free Sample!
We provide samples for free, you just need to tell us what you need
More Than Just a modular contactor Manufacturer
At VIOX, we go beyond manufacturing modular contactors by offering a suite of value-added services tailored to meet your project needs. Our commitment to excellence ensures that every customer receives personalized attention, expert guidance, and seamless support throughout their journey with us.

Service Consultation
Whether your modular contactor requirements are straightforward or complex, our team provides expert advice and technical consultation. For more intricate projects, we offer in-depth engineering support to ensure optimal product selection and application.

Product Recommendations
Unsure which modular contactor suits your system? Our specialists provide free, customized recommendations based on your specific operational and environmental requirements, ensuring you get the perfect fit.

Logistics Support
If you lack a reliable freight forwarder, we can arrange transportation from our factory to your project site at no extra cost. Our logistics team ensures timely and secure delivery to keep your project on schedule.

Installation Support
Need help with installation? Our technical team is available to answer your questions or provide hands-on support. For larger projects, we can even dispatch an engineer to your site for on-the-ground assistance.
Frequently Asked Questions
We have compiled some common questions from our clients. If your question isn’t included here, our customer service is always available to help. We’d love to talk with you.
How Can I Get a Quote for the Modular Contactor?
To get a quote for our Modular Contactor, contact our customer service team. We are available 24/7. Just provide the specifics of your order like the type, size, and quantity. We’ll guide you through the entire ordering process.
What is Your MOQ for the Order?
We have a low MOQ or minimum order quantity. You can order as little as one unit, and we will deliver according to your specifications.
What Is the Turnaround Time for My Order?
The standard turnaround time for our Modular Contactor is 7 to 10 business days. Delivery time may extend by up to 15 business days due to transit. For custom or bulk orders, we can discuss the turnaround time before finalizing your order.
Can I Get a Sample Before Placing the Order?
Yes, we provide samples for evaluation and approval. Creating samples typically takes 3 to 7 business days.
Can You Make Customized Modular Contactor?
Yes, we offer customized Modular Contactor. Let us know your requirements, and our expert customer service team will work with you through the design process.
What is Your Warranty for the Modular Contactor?
We offer a 3-year warranty on all Modular Contactor we produce. This ensures we deliver high-quality products. Every product is thoroughly tested before delivery.
KNOWLEDGE About BUSBAR
What is Modular Contactor?
A modular contactor is an electromechanical switching device designed for DIN rail mounting in distribution boards. It’s used for remote control of lighting, heating, ventilation, and other electrical loads in residential, commercial, and industrial applications.
Modular Contactor Operation Principles
Modular contactors operate through a straightforward electromagnetic mechanism designed for efficient and reliable circuit control. At their core, they consist of three main components: a coil, contacts, and an enclosure. When the coil is energized by a control voltage, it generates a magnetic field that pulls the movable contacts toward fixed contacts, completing the circuit and allowing current to flow to the connected load. Upon de-energizing the coil, the magnetic field collapses, and a spring mechanism pushes the contacts apart, breaking the circuit.
This mechanism enables modular contactors to handle high-power circuits using low-power control signals. They are available in Normally Open (NO) or Normally Closed (NC) configurations, providing flexibility for different applications. Their rapid open-and-close action ensures precise switching, making them ideal for managing lighting systems, HVAC units, and motor loads in residential, commercial, and industrial settings.
Compact and Modular Design of Modular Contactor
Modular contactors are characterized by their compact, standardized design optimized for efficient installation and space utilization. Typically measuring 18-54mm in width for 2-4 pole configurations, these devices are significantly smaller than traditional contactors, allowing for higher density in electrical panels. Their construction features a durable plastic or metal enclosure with integrated DIN rail mounting clips for easy installation.
Key physical attributes include:
Standardized dimensions compatible with DIN rail systems
Modular expansion capabilities for auxiliary contacts and timer modules
Touch-safe terminal designs to reduce accidental contact risks
Advanced terminal configurations like cage clamp technology for secure wire retention
Integrated arc suppression chambers to extend operational lifespan
Optional manual override switches for direct control
These physical characteristics enable modular contactors to offer superior flexibility and safety in a wide range of electrical control applications, from residential lighting systems to industrial motor controls.
What’s the difference between a modular contactor and a regular contactor?
Modular contactors are specifically designed for DIN rail mounting with standardized dimensions to fit in distribution boards. They typically have lower power ratings than industrial contactors and are optimized for building automation applications.
How do I select the right modular contactor for my application?
Consider these factors:
- Current rating (based on connected load)
- Number of poles required (1P, 2P, 3P, or 4P)
- Contact configuration (NO/NC requirements)
- Control voltage availability
- Frequency of switching operations
- Operating environment conditions
Can VIOX modular contactors be used with different types of lighting loads?
Yes! Our selection tables provide detailed information on maximum lamp quantities for various lighting types, including:
- Incandescent and halogen lamps
- Fluorescent tubes with ferromagnetic or electronic ballasts
- Compact fluorescent lamps
- LED lighting
- Sodium vapor lamps
What control voltages are available for VIOX modular contactors?
Standard options include:
- 12V AC/DC
- 24V AC/DC
- 48V AC/DC
- 110V AC/DC
- 230V AC/DC (220-240V)
Custom coil voltages are available upon request.
What is the electrical endurance of VIOX modular contactors?
Our modular contactors are designed for a minimum of 100,000 electrical switching operations under rated load conditions, with mechanical endurance exceeding 1,000,000 operations.
Can VIOX modular contactors be used for motor control?
Yes, our contactors are rated for AC-3 applications (squirrel-cage motors). Refer to the AC-3 column in our technical specifications for appropriate sizing based on motor power requirements.
Modular contactors Applications and Evolution
Modular contactors have a rich history dating back to 1973 when the world’s first modular contactor was introduced. Since then, they have become essential components in various electrical systems, particularly in building automation and industrial applications.
Key applications of modular contactors include:
Lighting control in residential and commercial buildings
HVAC system management
Electric motor control in industrial machinery
E-mobility and electric vehicle charging systems
Solar panel control in residential installations
Pool and jacuzzi control systems
The evolution of modular contactors has led to significant improvements in energy efficiency, with modern designs consuming as little as 0.5-2W of holding power compared to 5-10W for traditional contactors. This advancement, coupled with their compact size and versatility, has made modular contactors increasingly popular in both residential and industrial settings, offering a balance of performance, safety, and cost-effectiveness.
Modular contactors Installation Pitfalls to Avoid
When installing modular contactors, several common mistakes can lead to performance issues or safety hazards:
Incorrect voltage selection: Using a contactor with a coil voltage that doesn’t match the control circuit can cause failure to energize or coil burnout.
Improper wire sizing: Selecting wires with inadequate cross-sectional area for the contactor’s current rating can lead to overheating and connection failures.
Insufficient torque: Failing to tighten wire connections to the specified torque values can result in loose connections and potential arcing.
Neglecting ventilation: Installing contactors in poorly ventilated areas can cause overheating, reducing their lifespan and reliability.
Ignoring environmental factors: Failing to consider factors like humidity, dust, and temperature can lead to premature contactor failure.
To avoid these issues, always verify compatibility, follow manufacturer guidelines for wire sizing and torque specifications, ensure proper ventilation, and consider the installation environment carefully.
Industrial Modular Contactor Benefits
Modular contactors offer significant advantages in industrial systems, making them increasingly popular for electrical control applications:
Energy Efficiency: Modular contactors consume up to 70% less energy than traditional models, reducing operational costs and heat generation in electrical panels.
Compact Design: Their space-saving construction allows for easier integration into switchboards, crucial in modern installations where space is limited.
Flexibility: Modular contactors can be customized with various pole counts and current ratings, adapting to specific application requirements.
Enhanced Safety: Advanced features like overload protection, short circuit protection, and voltage surge suppression ensure system and personnel safety.
Easy Installation and Maintenance: The modular design simplifies installation and allows for quick replacement of individual units without affecting the entire system.
Reliability: Designed to meet strict industry standards, modular contactors offer long-term performance with minimal maintenance, ideal for critical industrial applications.
These advantages make modular contactors an essential component for improving efficiency, safety, and reliability in industrial automation and control systems.
Chinese modular contactor Manufacturer
China has emerged as a leading hub for modular contactor manufacturing, offering a wide range of high-quality products at competitive prices. Among the prominent manufacturers is VIOX Electric, a global supplier of low-voltage electrical equipment, including modular contactors, with ISO-certified manufacturing facilities. Leveraging advanced production techniques and modern machinery, VIOX ensures compliance with international standards such as IEC and RoHS
Request an OEM Modular Contactor Quote
VIOX Electric is ready to assist you with your OEM Modular Contactor needs. We offer high-quality and cost-effective solutions.