WH116AK-4R-2

WH116AK-4R-2 High-Power, High-Current Contact-Type Impedance Adjustment Component

Product Overview

WH116AK-4R-2 is a contact-type impedance adjustment component specifically designed for high-power, high-current load applications. It supports both SPDT and SPST switching modes and can directly control high-power circuits without the need for complex semiconductor inverters. Featuring silver contacts, it effectively increases the switch’s current-carrying capacity. By adjusting the effective resistance, it enables current shunting or voltage division in the circuit, while offering exceptional heat resistance and surge-current protection, fully meeting the demands of industrial-grade high-power operating conditions. Additionally, the product holds multiple industrial certifications, including VDE, CB, and NEMKO. Under extreme high-temperature conditions of 100°C, it can operate continuously at full load for ≥30,000 cycles without electrical breakdown, reducing overall maintenance costs by more than 40%. It is an ideal component for industrial high-power circuit regulation scenarios.

Technical Principle

WH116AK-4R-2 operates on the principle of contact-type impedance adjustment, with a core design featuring silver contacts. Compared to conventional contact materials, silver offers superior electrical conductivity and enhanced high-temperature performance, significantly boosting the switch’s current-carrying capacity. By varying the internal effective resistance, the component achieves current shunting or voltage division, enabling precise regulation of high-power circuits. This principle eliminates the need for complex semiconductor inverter equipment; direct mechanical contact-based adjustment suffices to control high-power circuits, resulting in a simple yet reliable structure suitable for harsh industrial environments. Moreover, the silver-contact design greatly reduces switch contact resistance, enhancing the stability of power transmission.

Performance Parameters

1. Switching Modes: SPDT, SPST
2. Rated Power: 1,000W to 2,500W
3. Rated Current Capacity: 4A to 10A
4. Insulation Resistance: ≥100MΩ (DC 500V)
5. Switch Contact Resistance: ≤50mΩ
6. High-Temperature Stability: Can operate continuously at full load for ≥30,000 cycles under extreme high-temperature conditions of 100°C without electrical breakdown
7. Certifications: VDE, CB, NEMKO industrial-grade certifications

Core Advantages

1. High-Power, High-Current Compatibility: With rated power ranging from 1,000W to 2,500W and rated current up to 4A–10A, it is specially designed for high-power, high-current load scenarios, meeting the regulatory needs of industrial high-power circuits.
2. Dual Switching Options: Supports both SPDT and SPST switching modes, adapting to different circuit control logics and providing greater flexibility in application scenarios.
3. Silver Contacts Enhance Performance: The use of silver contacts effectively increases the switch’s current-carrying capacity and reduces contact resistance to ≤50mΩ, ensuring stable power transmission and minimizing energy loss.
4. Exceptional Heat Resistance and Surge Protection: With outstanding heat resistance, it can operate continuously at full load for ≥30,000 cycles under extreme high-temperature conditions of 100°C without electrical breakdown, and boasts strong surge-current protection, making it well-suited for demanding industrial environments.
5. No Need for Semiconductor Inverters: Enables direct control of high-power circuits without requiring complex semiconductor inverter equipment, simplifying circuit design and reducing equipment costs.
6. Industrial-Grade Certification Compliance: Holds multiple industrial-grade certifications, including VDE, CB, and NEMKO, ensuring compliance with electrical performance and safety standards, thus meeting requirements for industrial equipment integration and export.
7. Low Maintenance Costs: Overall maintenance costs are reduced by more than 40%, significantly cutting down long-term equipment maintenance expenses.

Core Product Value

1. Addresses the industry pain point of ordinary electronic potentiometers easily burning out under high current, ensuring the stability and durability of high-power circuit regulation.
2. Allows direct control of high-power circuits without semiconductor inverters, simplifying system design and lowering overall equipment costs.
3. Backed by industrial-grade certifications, it meets overseas market compliance requirements, supporting the expansion of industrial equipment exports.
4. With exceptional high-temperature stability and low maintenance costs, it reduces equipment downtime and maintenance efforts, thereby improving production efficiency.

Target Customer Base

Heavy machinery manufacturers, power equipment factories, traditional old-style welding equipment producers, and laboratory high-voltage power supply developers—all these enterprises engage in the design and application of high-power circuits and have a pressing need for impedance adjustment components that offer high stability and robust high-current carrying capacity. WH116AK-4R-2’s performance and qualifications perfectly align with their production and R&D requirements.

Application Scenarios

This product finds extensive use in various high-power industrial circuit regulation scenarios, primarily including coarse temperature adjustment for industrial furnaces, speed controllers for older DC motors, high-power analog power supply load testing, current regulation for electric welders, dimmer switches, and more. In industrial furnace temperature regulation, impedance adjustment allows precise control of furnace power, ensuring heating temperature stability. For older DC motor speed controllers, changing resistor voltage division adjusts motor speed, catering to the retrofitting and maintenance needs of legacy equipment. During high-power analog power supply load tests, it simulates diverse load conditions, providing reliable impedance adjustment support for power performance evaluation. In electric welder current regulation, it withstands the high-current surges during welding, stabilizing welding current and enhancing weld quality. And in dimmer applications, it directly controls the brightness of high-power lighting devices without additional inverter equipment, simplifying lighting control system design.

Solving Industry Pain Points

Ordinary electronic potentiometers often suffer from local Joule heating leading to resistor wire burnout, substrate carbonization, or brush fusion failure when used in high-current scenarios, severely impacting equipment stability and service life while increasing maintenance costs. WH116AK-4R-2 addresses this industry pain point through targeted design, employing a high-power-bearing structure and silver contact material capable of handling currents of 4A–10A and powers of 1,000W–2,500W. It also features exceptional heat resistance, allowing continuous full-load operation for ≥30,000 cycles under extreme high-temperature conditions of 100°C without electrical breakdown, completely resolving the issue of frequent failures experienced by conventional potentiometers under high current, thus providing a reliable solution for high-power circuit regulation.

Common Questions FAQ

Q1: What switching modes does WH116AK-4R-2 support?
A: This impedance adjustment component supports both SPDT and SPST switching modes, allowing selection based on specific circuit control requirements.
Q2: What are the product’s rated power and current ranges?
A: The product’s rated power spans from 1,000W to 2,500W, with a rated current capacity of 4A to 10A, fully compatible with high-power, high-current load scenarios.
Q3: How stable is the product under high-temperature conditions?
A: Under extreme high-temperature conditions of 100°C, the product can operate continuously at full load for ≥30,000 cycles without electrical breakdown, demonstrating exceptional heat resistance and suitability for harsh industrial environments.
Q4: Does the product hold industrial-grade certifications?
A: Yes, the product has obtained multiple industrial-grade certifications, including VDE, CB, and NEMKO, ensuring compliance with electrical performance and safety standards, thus meeting requirements for industrial equipment integration and export.
Q5: Compared to ordinary electronic potentiometers, what advantages does WH116AK-4R-2 offer?
A: Ordinary electronic potentiometers tend to experience resistor wire burnout, substrate carbonization, and other failures under high-current conditions, whereas WH116AK-4R-2 is specifically designed for high-power, high-current loads. Featuring a silver-contact structure, it provides exceptional heat resistance and surge protection, can directly control high-power circuits without semiconductor inverters, and reduces maintenance costs by over 40%, delivering far greater stability and durability than conventional potentiometers.