WH116AK-4A

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

Product Overview

The WH116AK-4A 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 diverse circuit control requirements. Featuring silver contacts, it effectively increases the switch’s current-carrying capacity. By adjusting the effective resistance, it enables current shunting or voltage division control, allowing direct control of high-power circuits without the need for complex semiconductor inverters. With exceptional heat resistance and surge-current protection, it is widely suited for industrial-grade high-power applications and has passed VDE, CB, and NEMKO industrial certifications, ensuring stable and reliable performance in compliance with stringent industrial safety standards.

Technical Principle

The WH116AK-4A operates on the principle of impedance adjustment, employing a core structure of silver contacts. The high conductivity and wear resistance of silver significantly enhance the switch’s current-carrying capacity, preventing contact issues caused by oxidation or wear. By varying the effective resistance within the circuit, it achieves current shunting or voltage division, precisely controlling the operating state of high-power loads. Compared to control schemes relying on semiconductor inverters, this impedance adjustment component requires no additional inverter, enabling direct connection to high-power circuits for seamless regulation, simplifying circuit design while reducing failure risks.

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. Switch Configurations: SPDT and SPST options available
6. High-Temperature Stability: Can operate continuously at full load for ≥ 30,000 cycles under extreme temperatures of 100℃ without electrical breakdown
7. Certifications: VDE, CB, and NEMKO industrial certifications

Core Advantages

1. High-Power, High-Current Capability: With a rated power range of 1000W–2500W and a rated current capacity of 4A–10A, it stably handles high-power, high-current loads, meeting the circuit control needs of heavy-duty industrial equipment.
2. Durable Silver Contact Design: The silver-contact structure not only boosts the switch’s current-carrying limit but also enhances its wear and oxidation resistance, extending component life and reducing maintenance frequency.
3. Superior Heat Resistance and Surge Protection: Exceptional heat resistance allows continuous full-load operation at 100℃ for over 30,000 cycles without electrical breakdown; outstanding surge-current protection ensures safe operation even during sudden current spikes.
4. No Need for Additional Inverters: Enables direct control of high-power circuits without requiring complex semiconductor inverters, simplifying circuit design and lowering overall equipment costs and potential failure points.
5. Authoritative Industrial Certifications: Certified by VDE, CB, and NEMKO, compliant with international industrial safety standards, meeting global requirements for industrial equipment compatibility and export compliance.
6. Low Maintenance Costs: Stable performance reduces overall maintenance expenses by more than 40%, cutting long-term repair and replacement costs.

Core Product Value

1. Addresses the common issue of ordinary electronic potentiometers failing under high current, providing a stable and reliable impedance adjustment solution for high-power circuits.
2. Eliminates the need for additional inverters, simplifying high-power circuit control designs and reducing overall equipment costs.
3. With superior heat resistance and surge protection, it ensures the continuous, stable operation of industrial equipment under extreme conditions.
4. Backed by authoritative industrial certifications, it facilitates smooth global exports of industrial equipment while minimizing compliance risks.
5. Significantly lowers comprehensive maintenance costs, reducing long-term operational expenses for businesses.

Target Customer Groups

Heavy machinery manufacturers, power equipment producers, traditional welding equipment makers, laboratory high-voltage power supply developers, and various industrial equipment manufacturers requiring high-power, high-current circuit adjustment solutions can all adopt the WH116AK-4A as a core circuit adjustment component to meet their products’ high-power control needs.

Application Scenarios

This component finds wide application across numerous high-power industrial settings, particularly suitable for coarse temperature control in industrial furnaces, speed regulation of older DC motors, high-power analog power supply load testing, current adjustment in arc welders, and high-power dimmer controls. In industrial furnace applications, impedance adjustment enables coarse temperature control; in older DC motor speed regulators, changing circuit resistance adjusts motor speed; during high-power analog power supply load tests, precise load impedance adjustments simulate various power supply operating conditions; in welding equipment, output current can be adjusted to suit different welding requirements; and in high-power dimmers, current control regulates light brightness.

Solving Industry Pain Points

In the field of high-power circuit regulation, conventional electronic potentiometers suffer from clear performance limitations: when subjected to high currents, localized Joule heating can cause resistor wire burnout, substrate carbonization, or brush fusion failures, disrupting normal equipment operation and increasing maintenance costs and downtime. The WH116AK-4A addresses this core pain point with a high-power-bearing structure and silver-contact design, stably handling high currents and heavy loads while effectively avoiding the damage issues common to standard potentiometers. Its exceptional heat resistance meets the demands of sustained operation under high-temperature conditions, eliminating frequent component replacements and reducing overall maintenance costs by more than 40%, thoroughly resolving the problem of component vulnerability in high-power circuit regulation scenarios.

Frequently Asked Questions (FAQ)

Q1: What switch configurations does the WH116AK-4A support?
A: This contact-type impedance adjustment component offers both SPDT and SPST switch configurations, allowing selection based on specific circuit control needs.
Q2: What are the product’s rated power and current ranges?
A: The component’s rated power spans 1000W to 2500W, with a rated current capacity ranging from 4A to 10A, making it well-suited for high-power, high-current load scenarios.
Q3: Does the product have industrial safety certifications?
A: The WH116AK-4A has obtained VDE, CB, and NEMKO industrial certifications, complying with rigorous international industrial safety standards and meeting the compliance requirements for industrial equipment.
Q4: How does this component perform in high-temperature environments?
A: With exceptional heat resistance, it can operate continuously at full load for over 30,000 cycles under extreme temperatures of 100℃ without electrical breakdown, reliably handling high-temperature conditions in industrial settings.
Q5: What advantages does this component offer compared to ordinary electronic potentiometers?
A: Ordinary electronic potentiometers often experience resistor wire burnout or substrate carbonization under high current, whereas the WH116AK-4A is specifically engineered for high-power, high-current loads, effectively enduring such conditions while avoiding these failures. Additionally, it eliminates the need for extra semiconductor inverters, simplifying circuit design and reducing maintenance costs.