Fieldpiece is one of the most trusted names in the HVAC industry, known for designing clamp meters tailored specifically to the needs of technicians. Two models that often get compared are the SC260 and the SC440.
Both are True-RMS clamp meters with HVAC-focused features, but they serve slightly different types of users. The SC260 is a compact mid-range tool, while the SC440 offers extra capacity and more diagnostic features.
📋 Overview of the Fieldpiece SC260
The Fieldpiece SC260 is a popular mid-level clamp meter designed for everyday HVAC troubleshooting. It provides the essential measurements most technicians need without being overly complex.
Key Features:
- True-RMS for accurate readings
- AC/DC voltage up to 600V
- AC current up to 400A
- Temperature measurement (K-type thermocouple included)
- Capacitance measurement for motor start/run capacitors
- Resistance, continuity, diode test
- Auto-ranging with data hold
- Backlit display
- Safety rating: CAT III 600V
The SC260 is ideal for HVAC technicians who need a reliable, affordable meter for day-to-day service calls.
📋 Overview of the Fieldpiece SC440
The Fieldpiece SC440 is a step up from the SC260, offering higher current measurement, additional diagnostic features, and expanded functionality for more demanding environments.
Key Features:
- True-RMS for accurate readings
- AC/DC voltage up to 600V
- AC current up to 400A (600A surge capacity)
- Temperature measurement (K-type thermocouple included)
- Capacitance, resistance, continuity, and diode test
- Inrush current measurement for troubleshooting motors
- Frequency measurement
- Duty cycle measurement
- Backlit dual display
- Safety rating: CAT III 600V
The SC440 is better suited for technicians who want extra features like inrush and frequency measurements for more advanced troubleshooting.
⚖️ Side-by-Side Comparison
| Feature | Fieldpiece SC260 | Fieldpiece SC440 |
|---|---|---|
| True-RMS | ✅ Yes | ✅ Yes |
| Max Voltage | 600V AC/DC | 600V AC/DC |
| Max Current | 400A AC | 400A AC (600A inrush) |
| Temperature Measurement | ✅ Yes | ✅ Yes |
| Capacitance | ✅ Yes | ✅ Yes |
| Resistance/Continuity/Diode | ✅ Yes | ✅ Yes |
| Inrush Current | ❌ No | ✅ Yes |
| Frequency Measurement | ❌ No | ✅ Yes |
| Duty Cycle | ❌ No | ✅ Yes |
| Display | Backlit | Backlit dual display |
| Safety Rating | CAT III 600V | CAT III 600V |
| Price Range (approx.) | $$ (mid-range) | $$$ (higher) |
👍 Pros and Cons
Fieldpiece SC260
✅ Affordable and reliable
✅ Covers HVAC essentials (temp, capacitance, continuity)
✅ Compact and easy to carry
❌ No inrush or frequency measurement
❌ Lower diagnostic capability compared to SC440
Fieldpiece SC440
✅ Adds inrush current and frequency measurement
✅ Duty cycle function for advanced troubleshooting
✅ Dual display for convenience
✅ Great for more complex HVACR systems
❌ More expensive
❌ Slightly bulkier than SC260
🛠️ Which One Should You Choose?
- Choose the Fieldpiece SC260 if you’re a residential HVAC technician or apprentice who needs a cost-effective, reliable clamp meter for everyday service tasks.
- Choose the Fieldpiece SC440 if you work with larger or more complex HVAC systems, where inrush current, frequency, and duty cycle measurements are necessary.
💡 Final Thoughts
Both the SC260 and SC440 are excellent HVAC clamp meters, but they serve slightly different roles. The SC260 is the practical choice for standard service work, while the SC440 is the better option for advanced technicians who want more diagnostic tools in the field.