WH116AK-3

WH116AK-3 High-Power, High-Current Contact-Type Impedance Adjustment Component

Product Overview

The WH116AK-3 is a contact-type impedance adjustment component specifically designed to handle high-power and high-current loads. It supports both SPDT and SPST switching configurations and can directly control high-power circuits without the need for complex semiconductor inverters. Featuring silver contacts, this product effectively increases the switch’s current-carrying capacity. By adjusting the effective resistance, it enables current shunting or voltage division, while offering exceptional heat resistance and strong surge-current protection. It operates stably even in extreme high-temperature environments, addressing the industry’s longstanding issue of conventional electronic potentiometers failing under high-current conditions. Suitable for various industrial-grade high-power adjustment applications, it has also passed VDE, CB, and NEMKO industrial certifications, meeting stringent industry standards for performance and safety.

Technical Principle

The WH116AK-3 operates on the principle of contact-type impedance adjustment, with a core design featuring silver contacts. The high conductivity and wear resistance of silver significantly enhance the switch’s ability to handle high currents, preventing contact welding or oxidation failures under heavy load. By adjusting the contact position between the brush and the resistive element, the device alters the effective resistance length in the circuit, thereby achieving current shunting or voltage division to regulate circuit parameters. Compared to semiconductor-based frequency modulation solutions, this component requires no complicated auxiliary circuits and can be directly connected to high-power circuits for adjustment, simplifying system architecture and reducing overall costs and failure risks.

Performance Parameters

1. Switch Configuration: Available in SPDT and SPST options
2. Rated Power: 1000W to 2500W
3. Rated Current: 4A to 10A
4. Insulation Resistance: ≥ 100MΩ (DC 500V)
5. Switch Contact Resistance: ≤ 50mΩ
6. High-Temperature Performance: Can operate continuously at full load in extreme temperatures up to 100℃ for over 30,000 cycles without electrical breakdown
7. Certification: VDE, CB, and NEMKO industrial certifications

Core Advantages

1. High-Power, High-Current Capacity: Supports rated powers of 1000W–2500W and currents of 4A–10A, directly compatible with high-load industrial circuits without requiring additional power conversion equipment.
2. Exceptional Heat Resistance and Surge Protection: With strong surge-current tolerance, it can operate continuously at full load in extreme temperatures up to 100℃ for over 30,000 cycles without electrical breakdown, adapting well to harsh industrial conditions.
3. Stable and Durable Silver Contacts: The silver-contact design raises the upper limit of switch current capacity, reduces contact resistance, prevents contact welding and oxidation failures, and extends component lifespan.
4. No Need for Complex Auxiliary Circuits: Can directly control high-power circuits without pairing with semiconductor inverters, simplifying system structure and lowering installation and maintenance costs.
5. Industrial Certification Compliance: Certified by authoritative industrial bodies such as VDE, CB, and NEMKO, ensuring compliance with electrical safety standards and meeting regulatory requirements for industrial equipment.
6. Low Maintenance Costs: Compared to conventional potentiometers, its overall maintenance costs are reduced by more than 40%, decreasing equipment downtime and the frequency of component replacements.

Core Value of the Product

1. Addresses the common failure issues of ordinary potentiometers—burnout, carbonization, and contact welding under high current—ensuring stable and reliable regulation of high-power circuits.
2. Directly adapts to high-power load scenarios without requiring additional frequency-modulation devices, simplifying system design and reducing overall procurement and operational costs.
3. Provides stable performance under extreme conditions, minimizing downtime losses caused by regulator failures and boosting production efficiency.
4. With authoritative industrial certifications, helps downstream equipment meet overseas market compliance requirements, expanding business opportunities.

Target Customer Groups

Heavy machinery manufacturers, power equipment producers, traditional old-style welding equipment makers, and developers of laboratory high-voltage power supplies—all these enterprises have core needs for high-power circuit regulation and require stable, reliable impedance adjustment components capable of handling high currents to ensure normal operation and optimal performance.

Application Scenarios

The WH116AK-3 is suitable for various industrial-grade high-power adjustment applications, including coarse temperature control in industrial furnaces, speed regulation for older DC motors, high-power analog power supply load testing, current adjustment for arc welders, dimmer controls, and more. In industrial furnace settings, it can achieve rough-range temperature regulation by adjusting resistance; in older DC motor speed controllers, it allows changing input current to adjust rotational speed; during high-power analog power supply load tests, it simulates different load conditions to evaluate power supply performance; in welding equipment, it precisely regulates welding current to ensure quality results; and in dimmer applications, it controls the brightness of high-power lighting fixtures, meeting industrial lighting adjustment needs.

Solving Industry Pain Points

Conventional electronic potentiometers often suffer from excessive local Joule heating when handling high-current loads, leading to resistor wire burnout, substrate carbonization, or brush welding failures. This not only affects normal equipment operation but also increases maintenance costs and downtime. Addressing this industry pain point, the WH116AK-3 employs a high-power-capacity design and silver-contact structure, boasting exceptional heat resistance and surge-protection capabilities. It operates stably under high-current conditions, effectively avoiding the failure issues of ordinary potentiometers, while reducing overall maintenance costs by more than 40%, providing industrial equipment with a more reliable impedance adjustment solution.

Common Questions FAQ

Q1: What switch configurations does the WH116AK-3 support?
A: This contact-type impedance adjustment component supports both SPDT and SPST switching configurations, allowing selection based on specific circuit requirements.
Q2: What are the product’s rated power and current ranges?
A: The WH116AK-3 has a rated power range of 1000W to 2500W and a rated current range of 4A to 10A, making it adaptable to various high-power load scenarios.
Q3: Does this component need to be used with a semiconductor inverter?
A: No, the WH116AK-3 can directly control high-power circuits without requiring complex semiconductor inverters, simplifying system architecture and costs.
Q4: How does the product perform in high-temperature environments?
A: In extreme high-temperature conditions up to 100℃, the WH116AK-3 can operate continuously at full load for over 30,000 cycles without electrical breakdown, demonstrating exceptional thermal stability.
Q5: Does the product have relevant certification?
A: Yes, the WH116AK-3 has passed VDE, CB, and NEMKO industrial certifications, with electrical safety performance meeting stringent industry standards.