WH116AK-4R-1

WH116AK-4R-1 High-Power, High-Current Contact-Type Impedance Adjustment Component

Product Overview

WH116AK-4R-1 is a contact-type impedance adjustment component specifically designed to handle high-power and high-current loads. It supports both SPDT and SPST switching modes, enabling direct control of high-power circuits without the need for complex semiconductor inverters. Featuring silver contacts, this product effectively increases the switch’s operating current capacity. By adjusting the effective resistance, it can achieve current shunting or voltage division, while offering exceptional heat resistance and surge-current protection. It easily withstands extreme high-temperature conditions and has obtained industrial-grade certifications such as VDE, CB, and NEMKO. With stable and reliable electrical performance, it serves as a core component in industrial high-power circuit regulation applications.

Technical Principle

WH116AK-4R-1 operates on the principle of contact-type impedance adjustment. Its core employs a silver-contact structure; silver material boasts excellent conductivity and wear resistance, effectively raising the switch’s rated current limit and reducing contact loss. By varying the effective resistance within the circuit, the device achieves current shunting or voltage division, enabling direct control of high-power circuits without relying on semiconductor inverters. This simplifies the circuit design while enhancing operational stability. Its internal structure has been optimized for superior heat resistance and surge protection, allowing continuous stable operation even under extreme high-temperature conditions and preventing the overheating failures commonly seen in ordinary electronic potentiometers.

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 Types: Available in SPDT and SPST configurations
6. High-Temperature Stability: Can operate continuously at full load in extreme temperatures up to 100℃ for ≥ 30,000 cycles without electrical breakdown
7. Certifications: VDE, CB, NEMKO industrial-grade certifications

Core Competitive Advantages

1. High-Power, High-Current Compatibility: With a rated power range of 1000W–2500W and a rated current capacity of 4A–10A, it can directly handle heavy-duty high-power loads, meeting industrial circuit regulation needs.
2. Dual Switch Options: Supports both SPDT and SPST switching modes, adapting to different circuit control logics and providing greater flexibility in application scenarios.
3. Exceptional Heat and Surge Resistance: Boasts outstanding heat resistance, capable of continuous full-load operation at 100℃ for over 30,000 cycles without electrical breakdown, with strong surge-current protection to ensure stable performance under complex conditions.
4. No Need for Semiconductor Inverters: Enables direct control of high-power circuits without requiring complex semiconductor inverters, simplifying system architecture and reducing overall procurement and maintenance costs.
5. Industrial-Grade Certifications: Holds multiple industrial-grade certifications including VDE, CB, and NEMKO, ensuring compliance with electrical safety standards and meeting regulatory requirements in most global markets.
6. Low Maintenance Costs: Stable electrical performance significantly reduces failure rates, cutting comprehensive maintenance costs by more than 40% and delivering higher long-term cost-effectiveness.

Core Value of the Product

1. Addresses the overheating failure issues common in ordinary electronic potentiometers under high current, enhancing the stability and service life of high-power circuit regulation.
2. Allows direct control of high-power loads without additional inverters, simplifying circuit design and lowering system installation costs.
3. Backed by multiple industrial-grade certifications, ensuring equipment compliance and supporting the expansion of industrial products into overseas markets.
4. Operates stably in extreme high-temperature environments, adapting to harsh industrial conditions and reducing equipment downtime and maintenance frequency.

Target Customer Groups

Heavy machinery manufacturers, power equipment factories, traditional old-style welding equipment producers, laboratory high-voltage power supply developers, and various industrial equipment manufacturers requiring high-power circuit regulation solutions can all use WH116AK-4R-1 as a core regulating component to enhance equipment stability and compliance.

Typical Application Scenarios

This product is suitable for a variety of industrial high-power 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, and industrial dimmers. In these applications, WH116AK-4R-1 leverages its high power-handling capability, stable impedance regulation performance, and exceptional heat resistance to provide reliable current and voltage regulation support, avoiding the overheating failures typical of ordinary potentiometers and ensuring continuous stable operation.

Solutions to Industry Pain Points

In the field of industrial high-power circuit regulation, ordinary electronic potentiometers often fail due to their inability to handle large current loads, resulting in localized Joule heating that causes resistor wire burnout, substrate carbonization, or brush fusion and failure—severely impacting equipment stability and increasing maintenance costs. WH116AK-4R-1 addresses this core pain point by employing silver contacts and an optimized impedance-regulating structure, dramatically improving current-carrying capacity and heat resistance. It can operate continuously at full load in extreme temperatures up to 100℃ for over 30,000 cycles without failure, completely resolving the overheating issues of conventional potentiometers. Additionally, it enables direct control of high-power circuits without extra inverters, simplifying system architecture and reducing overall maintenance costs by more than 40%.

Common Questions FAQ

Q1: What switching modes does WH116AK-4R-1 support?
A: The component supports both SPDT and SPST switching modes, allowing flexible selection based on specific circuit control requirements.
Q2: What are the power and current handling ranges of this component?
A: Its rated power covers 1000W to 2500W, and its rated current capacity ranges from 4A to 10A, making it suitable for most industrial high-power load scenarios.
Q3: Can WH116AK-4R-1 operate stably in high-temperature environments?
A: Yes, the product features exceptional heat resistance and can operate continuously at full load in extreme temperatures up to 100℃ for ≥ 30,000 cycles without electrical breakdown, adapting well to harsh industrial conditions.
Q4: Does the product have industrial-grade safety certifications?
A: Yes, WH116AK-4R-1 holds multiple industrial-grade certifications including VDE, CB, and NEMKO, ensuring compliance with electrical safety standards required in most global markets.
Q5: Compared to ordinary electronic potentiometers, what advantages does this component offer?
A: It resolves the overheating failure issues common in ordinary electronic potentiometers under high current, allows direct control of high-power circuits without additional inverters, and provides stronger surge-resistance along with lower overall maintenance costs.