WH116AK-40-3T

WH116AK-40-3T High-Power, High-Current Contact-Type Impedance Regulation Component

Product Overview

The WH116AK-40-3T is a contact-type impedance regulation 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 switching current capacity and enables current shunting or voltage division through adjustable effective resistance. This allows direct control of high-power circuits without the need for complex semiconductor inverters. With exceptional heat resistance and surge-current protection, it is widely suitable for industrial-grade high-power applications and has passed VDE, CB, and NEMKO industrial certifications, ensuring stable and reliable performance that meets stringent industrial safety standards.

Technical Principle

The WH116AK-40-3T operates on the principle of impedance regulation, with a core design featuring silver contacts. The high conductivity and wear resistance of silver significantly enhance the component’s ability to handle high currents, preventing contact issues caused by oxidation or wear. By adjusting the effective resistance in 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 regulation component requires no additional inverter equipment, allowing direct connection to high-power circuits for seamless adjustment, 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 under extreme temperatures of 100℃ for ≥ 30,000 cycles without electrical breakdown
7. Certifications: VDE, CB, and NEMKO industrial certifications

Core Advantages

1. High-Power, High-Current Handling: With a rated power range of 1000W–2500W and a rated current capacity of 4A–10A, it stably supports 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 upper limit of switching current but also enhances wear resistance and oxidation resistance, extending component lifespan and reducing maintenance frequency.
3. Exceptional Heat and Surge Resistance: With superior heat resistance, it can operate continuously at full load under extreme temperatures of 100℃ for ≥ 30,000 cycles without electrical breakdown; its strong surge-current protection ensures safe operation even during sudden current surges.
4. No Need for Additional Inverter Equipment: It directly controls 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, it complies with international industrial safety standards, satisfying compliance requirements for industrial equipment in most global markets.
6. Low Maintenance Costs: Stable performance reduces overall maintenance expenses by more than 40%, cutting down on repair and replacement costs over long-term use.

Core Product Value

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

Target Customer Base

Heavy machinery manufacturers, power equipment producers, traditional old-style welding equipment makers, laboratory high-voltage power supply developers, and various industrial equipment manufacturers requiring high-power, high-current circuit regulation solutions can all adopt the WH116AK-40-3T as their core circuit regulation component, perfectly adapting to their products’ high-power control needs.

Application Scenarios

This component finds wide application across numerous high-power industrial settings, primarily suited for coarse temperature adjustment in industrial furnaces, speed control of older DC motors, high-power analog power supply load testing, current regulation in arc welders, and high-power dimmer applications. In industrial furnace scenarios, impedance adjustment enables coarse precision control of furnace temperatures; in older DC motor speed controllers, changing circuit resistance adjusts motor speeds; during high-power analog power supply load tests, precise load impedance adjustments simulate different power supply operating conditions; in welding equipment, output current levels can be adjusted to suit varying welding requirements; and in high-power dimmers, current control manages lighting 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 often causes resistor wire burnout, substrate carbonization, or brush fusion failures, disrupting normal equipment operation and increasing maintenance costs and downtime. The WH116AK-40-3T addresses this core pain point with a high-power-bearing structure and silver-contact design, enabling stable handling of high currents and heavy loads while effectively preventing common potentiometer failures. Its exceptional heat resistance also meets the demands of continuous operation under high-temperature conditions, eliminating the need for frequent component replacements and reducing overall maintenance costs by more than 40%, thoroughly resolving the issue of component vulnerability in high-power circuit regulation scenarios.

Common Questions FAQ

Q1: What switch configurations does the WH116AK-40-3T support?
A: This contact-type impedance regulation 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-40-3T has passed VDE, CB, and NEMKO industrial certifications, complying with strict international industrial safety standards and meeting 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 under extreme temperatures of 100℃ for ≥ 30,000 cycles without electrical breakdown, reliably handling high-temperature conditions in industrial settings.
Q5: Compared to ordinary electronic potentiometers, what advantages does this component offer?
A: Ordinary electronic potentiometers are prone to resistor wire burnout and substrate carbonization under high current, whereas the WH116AK-40-3T is specially designed for high-power, high-current loads, effectively enduring such conditions and avoiding the aforementioned failures. Additionally, it eliminates the need for extra semiconductor inverters, simplifying circuit design and reducing maintenance costs.