WH116AK-2

WH116AK-2 High-Power, High-Current Contact-Type Impedance Adjustment Component

Product Overview

The WH116AK-2 is a contact-type impedance adjustment component specifically designed to handle high-power and high-current loads, offering both SPDT and SPST switching options. Featuring silver contacts, it effectively increases the switch’s operating current capacity. By adjusting the effective resistance, it enables current shunting or voltage division operations, allowing direct control of high-power circuits without the need for complex semiconductor inverters. With exceptional heat resistance and surge-current protection, it delivers stable and reliable performance. Certified to industrial standards such as VDE, CB, and NEMKO, it fully meets the circuit adjustment requirements of various high-power industrial applications.

Technical Principle

The WH116AK-2 operates on the principle of contact-type impedance adjustment, utilizing silver contacts at its core. Compared to conventional contact materials, silver offers superior electrical conductivity and enhanced high-temperature resistance, significantly boosting the switch’s maximum allowable operating current. By varying the effective resistance within the circuit, it achieves current shunting or voltage division, precisely regulating the load’s power output. This purely resistive adjustment method eliminates the need for complex semiconductor inverters, enabling direct connection to high-power circuits for control, thereby avoiding the risk of semiconductor component failure under high-power conditions while simplifying circuit design.

Key Performance Parameters

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

Core Advantages

1. High-Power, High-Current Capability: Supports rated powers from 1000W to 2500W and currents from 4A to 10A, directly adapting to diverse high-power industrial load scenarios without requiring additional expansion devices.
2. Exceptional Heat and Surge Resistance: Boasts outstanding thermal stability, capable of continuous full-load operation for over 30,000 cycles in extreme temperatures up to 100°C without electrical breakdown, with strong surge-current protection and excellent performance under demanding conditions.
3. Simplified Circuit Design: Enables direct control of high-power circuits without complex semiconductor inverters, reducing circuit design complexity and costs while minimizing potential failure points.
4. Low-Loss, Stable Contact: With switch contact resistance ≤ 50mΩ and minimal energy loss, the silver-contact design ensures stable connections, preventing equipment malfunctions caused by current fluctuations.
5. Superior Insulation Safety: Insulation resistance ≥ 100MΩ (DC 500V), providing excellent electrical insulation and effectively mitigating risks of leakage and short circuits.
6. Authoritative Industrial Certification: Certified to VDE, CB, NEMKO, and other industrial standards, meeting safety requirements across most global industrial markets and facilitating international market access.

Core Product Value

1. Ideal for high-power, high-current applications, addressing the limitations of conventional electronic potentiometers that cannot handle large currents, ensuring stable equipment operation.
2. Long-term stable performance in high-temperature environments, reducing maintenance frequency and cutting overall maintenance costs by more than 40%.
3. Simplifies high-power circuit control design, lowering circuit construction costs and reducing the likelihood of failures.
4. Backed by authoritative certifications, meeting compliance requirements of global industrial markets and supporting overseas product deployment.

Target Customer Base

Heavy machinery manufacturers, power equipment producers, traditional welding equipment makers, and developers of high-voltage laboratory power supplies—these industries frequently involve high-power, high-current circuit control and have stringent requirements for component load capacity and stability. The WH116AK-2’s performance and certifications perfectly align with their production and R&D needs.

Application Scenarios

This product finds wide application in various industrial settings requiring high-power, high-current regulation, including coarse temperature control in industrial furnaces, speed regulators for older DC motors, high-power analog power supply load testing, current adjustment in arc welders, and dimmer controls. In industrial furnace applications, resistance adjustments enable coarse temperature regulation; in older DC motor speed controllers, changing current output adjusts motor speed; during high-power analog power supply load tests, it simulates different power load conditions; in welding equipment, it precisely regulates output current to ensure consistent welding quality; and in dimmer applications, it accommodates brightness adjustments for high-power lighting fixtures.

Solving Industry Pain Points

In the field of high-power circuit regulation, conventional electronic potentiometers suffer from clear performance shortcomings: when handling large currents, excessive local Joule heating can cause resistor wire burnout, substrate carbonization, or brush fusion failures, severely compromising equipment stability and even leading to safety incidents. The WH116AK-2 addresses these pain points by employing high-heat-resistant materials and a silver-contact structure, dramatically enhancing current-carrying capacity and thermal resilience. It can operate stably under high-power, high-current conditions for extended periods, completely resolving the failure issues of ordinary potentiometers while reducing maintenance costs and improving overall operational efficiency. Additionally, conventional potentiometers often require pairing with semiconductor inverters to manage high-power circuits, increasing circuit complexity and expenses. In contrast, the WH116AK-2 can connect directly to high-power circuits for control, streamlining the design process and lowering development and production costs.

Common Questions FAQ

Q1: What switching options does the WH116AK-2 offer?
A: The component provides both SPDT and SPST switching options, allowing selection based on specific circuit design requirements.
Q2: What are the WH116AK-2’s power and current capacity ranges?
A: The product’s rated power spans 1000W to 2500W, with a rated current range of 4A to 10A, making it suitable for most industrial high-power load scenarios.
Q3: How stable is the WH116AK-2 under high-temperature conditions?
A: In extreme temperatures up to 100°C, the component can operate continuously at full load for ≥ 30,000 cycles without electrical breakdown, demonstrating excellent thermal stability and suitability for high-temperature industrial environments.
Q4: Does the product meet international export compliance standards?
A: The WH116AK-2 has obtained VDE, CB, NEMKO, and other industrial-grade certifications, complying with safety regulations in most global industrial markets and satisfying export compliance requirements.
Q5: What are the key advantages of the WH116AK-2 compared to conventional electronic potentiometers?
A: Conventional electronic potentiometers cannot handle large currents and are prone to resistor wire burnout, brush fusion, and other failures. In contrast, the WH116AK-2 is specifically engineered for high-power, high-current loads, featuring exceptional heat resistance and surge protection. It can directly control high-power circuits without additional semiconductor devices, delivering far greater stability and durability than ordinary potentiometers, while reducing overall maintenance costs by more than 40%.