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Waterproof isolation switch A/B TDUKFA/B Series
Product Introduction
The waterproof isolation switch serves as an indispensable electrical protection component, specifically engineered to perform in tough operating environments—including damp spaces, dusty areas, and locations prone to water exposure. It merges two essential capabilities: circuit isolation and waterproof protection. Beyond creating a visible, dependable circuit break point to achieve electrical isolation (a key safeguard for maintenance staff), its primary advantage lies in an exceptional protection rating. This rating effectively blocks the intrusion of moisture, dust, and corrosive gases, guaranteeing consistent, long-term performance in outdoor settings, humid spaces, and high-demand industrial applications.
Key Capabilities
1.Secure Electrical Isolation: When equipment requires maintenance or is shut down for extended periods, the switch offers a clearly visible "disconnection point." This fully severs the circuit from the power supply, eliminating risks and providing fundamental safety for on-site personnel.
2.Load On/Off Control: It is capable of directly connecting or disconnecting electrical currents under normal rated load conditions. This enables straightforward "start" and "stop" control for various electrical devices, such as water pumps, lighting fixtures, and motors.
3.Superior Water & Dust Resistance: Thanks to a precision-engineered sealing structure, the switch meets high protection standards like IP65 and IP66, ensuring robust defense against water and dust ingress.
Typical Application Scenarios
1.Municipal & Public Infrastructure: Used for controlling outdoor streetlights and managing landscape lighting systems.
2.Industrial Production Environments: Ideal for use in industrial spaces characterized by high humidity and heavy dust accumulation.
3.Construction & Real Estate Sectors: Applied in construction site temporary power supplies, lighting and fan control in underground parking garages, power distribution for back-of-house areas in shopping malls and hotels, and pump house operations.
4.New Energy & Critical Infrastructure: Integrated into photovoltaic (PV) power station combiner boxes and distribution cabinets, wind farm electrical systems, communication base stations, and lighting setups for railways and tunnels.
5.Agriculture & Water Treatment: Utilized in agricultural irrigation systems, aquaculture farm equipment, and water treatment pump stations.
Product Dimensions Diagram
| Model | Parameter | Dimension drawing |
| TDUKFA/B1-20 | 1P 20A 250V, Cable with a maximum outer diameter of16mm | ![]() |
| TDUKFA/B1-35 | 1P 35A 250V, Cable with a maximum outer diameter of16mm | |
| TDUKFA/B1-63 | 1P 63A 250V, Cable with a maximum outer diameter of16mm | |
| TDUKFA/B2-20 | 2P 20A 440V, Cable with a maximum outer diameter of16mm | |
| TDUKFA/B2-35 | 2P 35A 440V, Cable with a maximum outer diameter of16mm | |
| TDUKFA/B2-63 | 2P 63A 440V. Cable with a maximum outer diameter of16mm | |
| TDUKFA/B3-20 | 3P 20A 440V. Cable with a maximum outer diameter of16mm2 | |
| TDUKFA/B3-35 | 3P 35A 440V. Cable with a maximum outer diameter of16mm | |
| TDUKFA/B3-63 | 3P 63A 440V. Cable with a maximum outer diameter of16mm | |
| TDUKFA/B4-20 | 4P 20A 440V. Cable with a maximum outer diameter of16mm | |
| TDUKFA/B4-35 | 4P 35A 440V. Cable with a maximum outer diameter of16mm | |
| TDUKFA/B4-63 | 4P 63A 440V. Cable with a maximum outer diameter of16mm | |
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Modular DIN Rail Products
Smart Molded Case Circuit Breakers
PV Systems
Distribution Box


