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Fieldpiece

Fieldpiece SC440

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SC440 essential clamp meter kit (US)

Display:
5000 count dual display, 3.3 measurements per second
Current AC (clamp):
Ranges 50 A and 400 A; resolution 0.01 A; crest factor ≤ 3; jaw opening 1.2 in (30 mm); overload protection 400 AAC
Inrush current:
SC440 only: captures compressor motor starting current on the 50 A or 400 A range; 100-millisecond measurement period; minimum input >2 A on the 50 A range, >20 A on the 400 A range

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Package details

Model: SC440

Inrush current, dual display, 5000 count, backlight (60 s).

Condition:
Confirm new or reconditioned on the listing
Quantity:
Confirm package quantity on the listing

Important limit: Clamp measures AC current only - no DC jaw current, so it cannot measure DC amps through the clamp

Confirm condition, quantity and included accessories on the retailer’s listing.

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Specifications checked November 5, 2026. Full product details

Size and placement

Size and placement

Size and weight
233 × 79 × 45 mm; about 315 g including battery
Manufacturer specifications

Fieldpiece SC440 - 400A Dual Display Essential HVAC Clamp Meter

Fieldpiece's mid-size True RMS HVAC clamp meter with a 5000-count dual display, inrush current capture for compressor motor-start diagnosis, temperature, capacitance and microamps in one meter.

Which version should you buy?

Selected package: SC440 essential clamp meter kit (US).

Bundles and accessories

  • SC440 essential clamp meter kitModel: SC440

    Contents and availability

    Inrush current, dual display, 5000 count, backlight (60 s).

    HVACR pros who need compressor motor-start (inrush) diagnosis.

  • SC420 essential clamp meter kitModel: SC420

    Contents and availability

    Same family without the dual display; single display, no SC440 backlight, 200-hour battery life instead of 100 hours, and no inrush feature.

    Buyers who want the SC-family basics at a lower price.

Purchase links appear where the exact offer is verified. Confirm the named model, quantity and accessories before ordering.

Watch out

  • SC420 is the lower model: single display and no inrush current capture; the inrush feature is SC440 only, per the shared manual.

Why people pick it

  • Inrush capture on the 50 A or 400 A range is built for compressor motor-start diagnosis, with the 100 ms measurement period and minimum-starting-current limits stated in the manual
  • One meter covers the HVACR basics: True RMS volts, 400 A clamp current, temperature, capacitance, microamps DC for flame diode tests and duty cycle
  • Dual 5000-count display lets you read two parameters at once, and the meter takes Type K thermocouples directly with no adapter
  • Fieldpiece builds it for HVACR field service: magnetic strap, lead holder with detachable leads, alligator tips, CAT III 600V rating and 100-hour battery life
  • Full kit in the box: gold-plated silicone leads, Type K thermocouple, alligator extensions, case and battery

Know before you buy

  • Clamp measures AC current only - no DC jaw current, so it cannot measure DC amps through the clamp
  • No fuse: the meter uses a PTC instead (faster and safer per Fieldpiece's FAQ, but not field-replaceable like a traditional fuse)
  • No data logging or wireless connection: readings are display-only
  • Microamp range is limited to 500 µA, enough for flame rectifier tests but not a general microammeter

Full specifications

Display5000 count dual display, 3.3 measurements per second
Current AC (clamp)Ranges 50 A and 400 A; resolution 0.01 A; accuracy ±(2.0% + 10) 50-60 Hz; crest factor ≤ 3; jaw opening 1.2 in (30 mm); overload protection 400 AAC
Inrush currentSC440 only: captures compressor motor starting current on the 50 A or 400 A range; 100-millisecond measurement period; minimum input >2 A on the 50 A range, >20 A on the 400 A range
Voltage AC (50-500 Hz)Ranges 500 mV, 5 V, 50 V, 500 V, 600 V; resolution 0.1 mV; True RMS; accuracy ±(1.2% + 8)
Voltage DCRanges 500 mV, 5 V, 50 V, 500 V, 600 V; resolution 0.1 mV; accuracy ±(0.5% + 2); input impedance >100 MΩ on 500 mV, 10 MΩ on 5 V-600 V
Microamps DC500 µA range, 0.1 µA resolution, ±(1.0% + 2), 1 V burden - for flame rectifier diode tests
Resistance500 Ω to 50 MΩ; 0.1 Ω resolution; ±(1.0% + 5) up to 500 kΩ
Capacitance5 µF, 50 µF, 500 µF, 5 mF; accuracy ±(3% + 5) mid ranges
Frequency and duty cycle10 Hz to 1 MHz via leads and clamp; duty cycle 5%-95%
Temperature (Type K)-30°F to 932°F (-35°C to 500°C); 0.1° resolution; ±(1°F) 32-120°F after field calibration
Non-contact voltageDetects 24 VAC to 600 VAC (50-60 Hz); three-segment graph plus red LED and beeper
SafetyCAT III 600V; EN61010-1, EN61010-2-032, EN61010-2-033; overload protection 600 VDC or 600 VAC rms unless otherwise stated
PowerOne 9 V battery (NEDA 1604); 100 hours typical alkaline; auto power off after about 30 minutes
BacklightBlue, 60 seconds with auto-off
Size and weight233 × 79 × 45 mm; about 315 g including battery
IncludesSC440 meter, ADLS2 deluxe silicone lead set with gold-plated tips, ATB1 Wrap Tab Type K thermocouple, ASA2 short alligator extensions, velcro strap, 9 V battery, ANC12 padded case
FeaturesMagnetic strap, test-lead holder with detachable leads, hold, hi-voltage warning LED and beeper, continuity warning

From manufacturer documentation, checked November 5, 2026. Spotted an error? Tell us.

Alternatives to consider

Fluke 325 True-RMS Clamp Meter

Fluke 325

Max voltage
600 V
Safety rating
CAT III 600 V, CAT IV 300 V
Specifications & conditions
Max current
400 A

A true-RMS 400 A clamp meter for commercial and residential troubleshooting, with AC/DC current and voltage, resistance, capacitance, frequency and temperature.

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