The HK4432C Insulation Resistance Tester is a high-precision portable megohmmeter designed for electrical contractors, industrial maintenance teams, panel builders, utility technicians, EPC projects, and professional tool distributors. Featuring a 6000-count LCD display, selectable test voltages up to 2500V, and a wide insulation resistance range of 0.01MΩ to 200GΩ, this tester delivers dependable performance for insulation diagnostics across a wide range of electrical systems.
Built for field service, and industrial inspection, the HK4432C is ideal for testing the insulation integrity of motors, transformers, cables, switchgear, power distribution systems, control cabinets, solar installations, and other electrical assets. Its CAT III 600V safety rating, auto-discharge protection, and rugged portable design make it a reliable choice for both on-site and workshop use.
For distributors, wholesalers, and OEM buyers looking for a professional insulation tester supplier, the HK4432C offers an excellent balance of performance, safety, portability, and private-label flexibility.
Key Features
6000-count digital LCD display for clear, stable, high-resolution readings
Wide insulation resistance range: 0.01MΩ to 200GΩ
Selectable test voltages: 100V / 250V / 500V / 1000V / 2500V
Suitable for low-voltage and high-voltage insulation testing applications
High measurement accuracy for professional electrical diagnostics
CAT III 600V safety rating for industrial and field environments
Auto-discharge function enhances operator safety after testing
Compact and lightweight design for easy carrying and field use
Auto and manual ranging for flexible operation
Ideal for OEM branding, distribution, wholesale supply, and project purchasing
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HK4432C |
| Display | 3.5/6-digit LCD, 6000 counts |
| Insulation Resistance Range | 0.01MΩ – 200GΩ |
| Test Voltages | 100V, 250V, 500V, 1000V, 2500V (±10%) |
| Accuracy | ±(3% to 8% + digits), depending on range |
| Operating Temperature | 0°C to 40°C |
| Relative Humidity | ≤85% RH |
| Safety Rating | CAT III 600V |
| Power Supply | 1.5V AA batteries × 8 |
| Dimensions | 165 × 110 × 73 mm |
| Weight | Approx. 520 g |
| Standard Accessories | Test leads, user manual, carrying case |
Applications
1. Electrical Maintenance
Used for insulation testing in motors, generators, transformers, and electrical wiring systems to identify deterioration and prevent failures.
2. Industrial Equipment Inspection
Suitable for control panels, production lines, switch cabinets, and factory machinery where insulation reliability is critical for safe operation.
3. Power Distribution & Utilities
Helps inspect cables, switchgear, breakers, and distribution equipment for preventive maintenance and fault detection.
4. Solar & Renewable Energy
A practical solution for testing PV cables, combiner boxes, inverters, and renewable energy systems during installation and maintenance.
5. Building & HVAC Systems
Ideal for checking insulation condition in commercial electrical installations, HVAC systems, and building service equipment.
6. EV & High-Voltage Service
Can support insulation diagnostics in electric vehicle maintenance and other high-voltage electrical systems where safe resistance testing is required.
Why Choose HK4432C?
Covers a broad range of insulation testing requirements with up to 2500V test voltage
Designed for professional electricians, industrial technicians, and service teams
Easy to carry for field testing, maintenance calls, and jobsite inspections
Reliable safety design with CAT III 600V protection
Suitable for bulk purchasing, reseller channels, and industrial projects
Excellent option for buyers seeking a cost-effective alternative to expensive branded megohmmeters
Why Choose Us?
B2B Decision-Making Advantages
Certifications
CE, RoHS, and ISO9001 certified for quality assurance and export compliance.
OEM & Customization Support
Support for logo printing, private label service, and custom packaging for distributors, wholesalers, and brand owners.
Flexible Order Quantities
Suitable for sample evaluation, small trial orders, and bulk procurement.
Lead Time
Ready to ship for small batches; approximately 15 days for bulk orders.
Warranty & After-Sales Support
Includes 2-year warranty and lifetime technical support for long-term cooperation.
Factory-Direct Supply
Competitive factory pricing with stable supply capability for importers, tool brands, project contractors, and industrial buyers.
