ZH04 Integrated Combination Switch | Motor Control Switch Box with Safety Protection
Engineered for machine safety. Built for reliable control.
Six core advantages that make the ZH04 the preferred combination switch for industrial machinery OEMs and replacement markets worldwide.
The ZH04 Combination Switch integrates motor control, electromagnetic switching, and safety protection functions into a compact enclosure.
Featuring no-voltage release protection, external protection terminals, and IP55-rated housing, ZH04 is designed for professional machinery requiring reliable operation and enhanced electrical safety.
Power-Loss & Undervoltage Protection
Automatically disconnects the main circuit during power failure or unstable voltage. Machine stays off until manually restarted — prevents abnormal starting.
Comprehensive Protection Circuit
External terminals support integration with overload protection switches, travel switches, temperature control switches and Hall switches for full machine safety.
No Unexpected Restart
After power interruption, the machine stays off until the power-on button is manually re-pressed. Eliminates dangerous automatic restart scenarios.
Long Service Life
Rated for 50,000 mechanical operations. Superior sealing performance and larger rated current compared to similar products on the market.
Global Compliance
Dual-certified with TÜV/CE (EN61058, EN60947) and cRUus (UL61058) — ready for European, North American and international markets.
Multiple Patents
This series has obtained multiple national utility model and design patents, offering proven advantages in service life, current rating and sealing performance.
ZH04 Technical Data
Two certification lines of the same combination switch platform. Both share the DZ-6 electromagnetic switch core with IP55-rated enclosure.
Engineered for Industrial Performance
Every detail of the ZH04 is designed for long-term reliability in demanding industrial environments.
Dimensions & Electrical Circuit Diagram
Official engineering drawing from the DKLD catalog. The ZH04 combination switch is built on the DZ-6 electromagnetic core — contact us for detailed CAD files and 3D models for your design team.
Where Used
The ZH04 combination switch is applied to start up and control motors across a wide range of industrial machinery and equipment.
Woodworking Machinery
Bench Drills
Tile Saws
Small Machine Tools
Electric-Driven Equipment
OEM Machinery Integration
Built for Global OEM Standards
DKLD combination switches are manufactured in our ISO 9001:2015 facility with UL- and TÜV-certified in-house laboratories. Every unit passes four quality gates before it ships.
Four Quality Gates, One Reliable Product
Each stage is backed by documented procedures, trained personnel and calibrated instruments.
Looking for a Reliable Motor Control Combination Switch?
Request a quote, samples, or technical datasheets. Our team responds within 24 hours.
Contact US →FAQ
What is the ZH04 integrated combination switch?
The ZH04 is an integrated combination switch that combines motor control, electromagnetic switching and safety protection functions in one compact enclosure. It is built on the DZ-6 electromagnetic switch core double-pole, with power-loss and undervoltage protection and uses an IP55-rated sealed enclosure.
What is the ZH04 used for?
It starts and controls motors on woodworking machinery, bench drills, tile saws, small machine tools, electric-driven equipment and OEM machinery integration. It is applied wherever a machine must stop safely on power failure and stay stopped until an operator restarts it.
Which certifications does the ZH04 hold?
It is dual-certified with T�V/CE (EN61058, EN60947) and cRUus (UL61058), i.e. TUV/CE (EN61058 EN60947) UL (UL61058), so it is ready for European, North American and international markets. It has obtained multiple national utility model and design patents.
What are the electrical and mechanical ratings of the ZH04?
Rated voltage is 250V~/110V~ 127V~ with rated currents of 16(15)A and 18(18)A, and utilization category data are AC-3:16A/AC-15:8A/14(14)A and AC-3:12A/AC-15:6A/10(10)A. Protection level is IP55, the maximum ambient temperature class is T85/T55 and mechanical life is 50,000 (5�10t) cycles.
How do restart protection and the external protection loop work on the ZH04?
After a power interruption the machine stays off until the power-on button is manually pressed again, and the main circuit is disconnected automatically on power failure or unstable voltage. External terminals accept overload protection switches, travel switches, temperature control switches and Hall switches so they form one comprehensive protection circuit.
What is the difference between the T�V/CE line and the cRUus line of the ZH04?
Both lines share the DZ-6 electromagnetic switch core and the IP55-rated sealed enclosure; the T�V/CE line (EN61058, EN60947) covers 250V~ / 110V~, while the cRUus line (UL61058) covers 127V~. Both are rated T85 / T55 and are produced in an ISO 9001:2015 facility where every unit passes four quality gates before it ships.
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