Overload & Short Circuit
Excessive current from faults or overloads damages cables and equipment risking fire and system failure.
FIX · MCB / MCCB / ACB
Industries We Power
Six sectors, one catalog. Match contactors, breakers, ATS and SPD to the way each installation is actually built.
Typical Electrical Protection Challenges
Each card maps a field problem to the WTAIDQ device family used to stop it.
Earth Leakage & Shock
Insulation failure creates leakage current to ground endangering personnel and tripping circuits.
FIX · RCCB / RCBO / TYPE B RCD
Surge & Lightning
Transient overvoltages destroy sensitive electronics in microseconds PLCs, drives, communication gear.
FIX · SPD TYPE 1+2 / TYPE 2
Motor Start Inrush
6–8× rated current at startup stresses contactors and cables causing wear, dips, and stoppages.
FIX · MPCB / CONTACTOR / THERMAL RELAY
Three-Phase Imbalance
Uneven loading overheats neutrals, reduces motor efficiency, and wastes transformer capacity.
FIX · RCCB / RCBO / TYPE B RCD
Arc Flash Hazard
Uncontrolled arcs release explosive energy causing injury, equipment loss, and extended downtime.
FIX · SELECTIVE MCCB / ACB COORDINATION
Solutions for Your Sector
Open a sector to see how the products are used, which ratings apply, and what failure they prevent.
Commercial Buildings
- High-density panel boards, mixed loads
- Seamless ATS generator transfer
- Earth leakage protection for life safety
EV Charging
- Type B RCD for smooth DC residual current
- Durable DC switching for fast chargers
- Outdoor surge & weather protection
Industrial Automation
- Motor start inrush & frequent switching
- PLC and sensor surge vulnerability
- Remote control and status monitoring
Power Distribution
- kA-level fault management at substations
- Selective coordination across tiers
- SCADA-ready monitoring & control
Smart Grid & IoT
- Bidirectional power from distributed generation
- Real-time monitoring & fault localization
- Communication-enabled breaker management
Solar Energy
- WTM7-63 for 250V DC combiners (6kA, 3-63A)
- WTM1-250 DC MCCB for 1500V arrays (250A)
- WTDS-32 string fuse and WTSP-D40 DC SPD
Real Results
Cases
Proven performance. Real deployments across the globe.
Industrial Development in North Sumatra Province
This industrial project is located in North Sumatra Province, Indonesia, and began implementation in September 2017. The project aims to harness the region's hydroelectric potential to generate sustainable energy.
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Tehran Power Generation Control Solution
As one of the largest cities in the Middle East, automobile manufacturing, electronic and electrical equipment, military industry, textile, sugar refining, cement and chemical industries are the main modern industries in
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Russian Factory Electrical Infrastructure Project
Electrical engineering occupies an important position in the Russian industry. The Russian government actively supports the development of the electrical engineering industry by formulating relevant policies.
Read Full CaseCOMMON QUESTIONS
Discover More Frequently Asked Questions
Use WTM1-250 DC MCCB (250A, DC 1500V or less, 4P, IEC 60947-2). WTM7-63 DC MCB is a 63A frame device rated 250V DC with 6kA Icu — not a 1500V string breaker.
Yes. AC boards use DZ47 MCBs, WTH8 modular contactors and WTSP-A40. DC chargers and PV use CJX2-Z DC contactors, WTM7-63 / WTM1-250 DC breakers and WTSP-D40.
Yes. Custom coil voltage, contact layout, branding and packaging are available. Share ratings and quantity for a sample plan.
Standard catalog items typically ship in 7-15 working days. Custom or bulk orders are usually 20-35 working days.
CONTACT US
Start Your Electrical Project Today
Send your application, voltage, certifications and quantity to this electrical protection manufacturer. We reply with a quotation within 24 hours.
- Engineering review by an electrical protection manufacturer before quoting
- Plant pricing with no intermediaries
- Export packing and shipping handled in one place
- One order owner from quotation to delivery