Fieldpiece SC420 Dual Display True RMS Clamp Meter | HVAC/R | 400A
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Fieldpiece SC420 Dual Display True RMS Clamp Meter — HVAC/R | 400A AC
The Fieldpiece SC420 is an auto and manual ranging True RMS clamp meter designed for HVAC/R professionals who need comprehensive electrical and thermal testing in a single instrument. True RMS measurement gives accurate readings on variable frequency drives (VFDs) and non-sinusoidal waveforms. The dual display shows two measurements simultaneously, and the full feature set covers the electrical ranges students and technicians use for most HVAC/R work.
Safety features include a high-voltage LED and beeper, continuity warning, push-button non-contact voltage (NCV), a lead holder on the clamp, and MAX hold for hands-free testing.
Electrical testing on live systems requires appropriate trade qualifications and licensing. Confirm licensing and compliance requirements with the relevant authority in your state or territory. Confirm all specifications against the Fieldpiece SC420 datasheet.
Key Features
- True RMS measurement — accurate on VFDs and non-sinusoidal waveforms
- Auto and manual ranging
- Dual display — view two measurements simultaneously
- 400A AC clamp measurement
- AC and DC voltage
- Microamps DC for flame rectification testing
- Temperature — °F and °C via included Type K thermocouple
- Capacitance — ranges: 5µF, 50µF, 500µF, 5mF
- Duty cycle %
- Frequency measurement via leads and clamp
- Non-contact voltage (NCV) indicator
- 50 megaohm resistance with 0.1 resolution
- Continuity beeper
- Diode test
- Hold and MAX hold
- Test-lead holder on clamp
- High-voltage LED and beeper safety warning
- Low battery indicator
What’s Included
- Fieldpiece SC420 Clamp Meter
- ADLS2 Deluxe Silicone Lead Set with gold-plated tips and removable sheath
- ATB1 Wrap Tab Type K Thermocouple
- Velcro strap
- 9V battery
- ANC12 Padded Case
Best For
- HVAC/R technicians who need True RMS measurement for VFD-driven equipment
- Technicians who want dual display for simultaneous current and temperature monitoring
- Flame rectification diode testing via microamps DC
- Comprehensive HVAC/R electrical and thermal testing in a single instrument
Check Before Ordering
- Electrical testing on live systems requires appropriate trade qualifications — confirm licensing requirements in your state or territory
- Confirm all specifications against the Fieldpiece SC420 datasheet for your application
- Confirm warranty terms with HVAC Trade Supply at time of purchase
Frequently Asked Questions
What is the warranty?
Confirm current warranty terms with HVAC Trade Supply at time of purchase.
Browse our full Fieldpiece test and measurement range or contact our team for advice.