WH116AK-4F

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

Product Overview

The WH116AK-4F is a contact-type impedance adjustment component specifically designed to handle high-power and high-current loads. It offers two switch configurations—SPDT and SPST—to meet the control requirements of various industrial circuits. Featuring silver contacts, it effectively increases the switching current capacity and enables current shunting or voltage division by adjusting the effective resistance, allowing direct control of high-power circuits without the need for complex semiconductor inverters. With exceptional heat resistance and surge-current protection, it can operate continuously at full load in extreme temperatures up to 100°C for ≥30,000 cycles without electrical breakdown, reducing overall maintenance costs by more than 40%. Additionally, it holds multiple industrial-grade certifications, including VDE, CB, and NEMKO, ensuring stable and reliable electrical performance, making it an ideal component for industrial high-power circuit regulation applications.

Technical Principle

The WH116AK-4F operates on the principle of contact-type impedance adjustment, with a core structure featuring silver contacts. Silver boasts excellent conductivity and superior high-temperature resistance, significantly enhancing the component’s ability to handle high currents and preventing contact welding under heavy loads. By varying the length of the internal effective resistance connected, the device achieves current shunting or voltage division, precisely controlling the operating state of high-power loads. Compared to traditional electronic potentiometers, this component eliminates the need for semiconductor inverters, enabling direct mechanical adjustment of high-power circuits. Its simple yet reliable design meets the demands of complex industrial environments requiring stable operation.

Performance Parameters

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

Core Advantages

1. High-Power, High-Current Capacity: Stably supports rated powers of 1,000–2,500W and currents of 4–10A, meeting the high-power load requirements of heavy industrial equipment and enabling direct control of high-power circuits without additional expansion.
2. Exceptional Heat Resistance and Surge Protection: With outstanding thermal stability, it can operate continuously at full load in extreme temperatures up to 100°C for ≥30,000 cycles without electrical breakdown, while also exhibiting strong surge-current resistance to withstand sudden current surges in industrial settings.
3. Silver Contacts Enhance Reliability: The silver-contact design ensures excellent conductivity, effectively preventing contact welding and poor connections under high currents, thereby extending component lifespan and reducing maintenance frequency.
4. No Need for Semiconductor Inverters: Direct impedance adjustment allows control of high-power circuits without complex semiconductor inverters, simplifying circuitry and lowering overall equipment costs and failure rates.
5. Authoritative Industrial Certifications: Certified by VDE, CB, NEMKO, and other major standards, its electrical performance meets international industrial benchmarks, satisfying overseas market access requirements and ensuring safe use in export equipment.
6. Low Maintenance Costs: Overall maintenance expenses are reduced by more than 40%, significantly cutting long-term operational costs and boosting enterprise profitability.

Core Value of the Product

1. Addresses industry pain points where conventional electronic potentiometers cannot handle high currents and frequently fail due to burnout, providing a stable and reliable solution for high-power industrial circuits.
2. Enables direct control of high-power circuits without additional inverters, simplifying equipment design and reducing overall costs.
3. Offers superior heat resistance and surge protection, adapting to extreme industrial conditions, minimizing equipment downtime and improving production efficiency.
4. Backed by authoritative industrial certifications, facilitating compliant exports and expanding into overseas markets.

Target Customer Groups

Heavy machinery manufacturers, power equipment producers, traditional old-style welding equipment makers, laboratory high-voltage power supply developers, industrial electric furnace producers, DC motor speed controller manufacturers, and high-power testing equipment suppliers.

Application Scenarios

The WH116AK-4F finds wide application across various industrial high-power circuit regulation scenarios, including coarse temperature adjustment in industrial electric furnaces, old-style DC motor speed controllers, high-power analog power supply load testing, arc welder current regulation, and industrial dimmer controls. In industrial electric furnace applications, it precisely regulates furnace power for coarse temperature control; in old-style DC motor speed controllers, it adjusts input current via impedance modulation to regulate rotational speed; during high-power analog power supply load tests, it simulates power output stability under different load conditions; in arc welder current regulation, it accurately controls welding current to ensure weld quality; and in industrial dimmers, it adjusts brightness of high-power lighting fixtures to suit diverse workplace lighting needs.

Solutions to Industry Pain Points

1. Addresses limitations of conventional electronic potentiometers: Conventional potentiometers often suffer from local Joule heating that causes resistor wire burnout, substrate carbonization, or brush welding failures when handling high currents. The WH116AK-4F features a high-power design and silver-contact structure, stably supporting 4–10A currents and preventing overheating-related failures, greatly extending component lifespan and reliability.
2. Simplifies high-power circuit design: Traditional high-power circuit control relies on complex semiconductor inverters, which are costly and prone to failure. This component eliminates the need for inverters, directly controlling high-power circuits and streamlining the design process, reducing equipment costs and maintenance complexity.
3. Adapts to extreme high-temperature conditions: In some industrial settings, ordinary adjustment components may experience electrical breakdown or performance degradation under high heat. The WH116AK-4F can operate continuously at full load in extreme temperatures up to 100°C for ≥30,000 cycles without electrical breakdown, meeting the demanding requirements of high-temperature industrial environments.

Common Questions FAQ

Q1: What switch configurations does the WH116AK-4F support?
A: The component offers both SPDT and SPST switch types, allowing users to select the appropriate configuration based on specific circuit control needs.
Q2: What are the power and current ratings of this component?
A: The WH116AK-4F has a rated power range of 1,000W to 2,500W and a rated current range of 4A to 10A, making it suitable for various high-power industrial loads.
Q3: Does the product have industrial-grade certifications?
A: Yes, the WH116AK-4F holds multiple industrial certifications, including VDE, CB, and NEMKO, with electrical performance meeting international industrial standards and satisfying overseas market access requirements.
Q4: How does it perform in high-temperature environments?
A: The component exhibits exceptional heat resistance, capable of continuous full-load operation in extreme temperatures up to 100°C for ≥30,000 cycles without electrical breakdown, perfectly suited to stable operation in high-temperature industrial scenarios.
Q5: Compared to conventional electronic potentiometers, what advantages does the WH116AK-4F offer?
A: Conventional potentiometers struggle to handle high currents and are prone to resistor wire burnout, brush welding, and other failures. In contrast, the WH116AK-4F is specially designed for high-power, high-current loads, featuring a silver-contact structure with superior surge resistance and heat tolerance. It eliminates the need for semiconductor inverters, enabling direct control of high-power circuits with enhanced reliability and adaptability.