FLUKE 355 True RMS Clamp Meter

Model # 355

2000 A AC + DC True RMS, 1400 A AC, and 2000 A DC
The large 58 mm (2.3 in) jaw capacity is suitable for large or multiple conductors
CAT IV 600 V, CAT III 1000 V rating for added user protection

BrandFLUKE
Model Number355
TypeDigital Clamp Meter

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Versatile and rugged tools for applications with high currents

Confidently take reliable readings with the True RMS, Fluke 355 digital clamp meter the tool of choice for high current clamp-on amp meter measurement up to 2000 A. The extra-wide jaw easily clamps around large conductors, typically found in high-current applications. The extra rugged design and CAT IV 600 V, CAT III 1000 V ratings add an extra element of user protection when taking high-powered measurements.

Accurate peak measurements can be taken using the in-rush current mode, ideal for motors and inductive loads. The 355 also measures voltage and resistance, making this an ideal clamp meter for utilities, electrical contractors and industrial service technicians.

Reliably handle a wide range of high-current applications with 2000 A AC + DC True RMS, 1400 A AC, and 2000 A DC
The large 58 mm (2.3 in) jaw capacity is suitable for large or multiple conductors
CAT IV 600 V, CAT III 1000 V rating for added user protection
In-rush current measurement captures ‘power-on’ surge current with accuracy and repeatability
High voltage measurement of 1000 V AC + DC True RMS, 600 V AC, and 1000 V DC allows the user to perform multiple tests with only one tool
Resistance to 400K ohms coupled with a continuity beeper provide the convenience of a multimeter in a clamp meter.
Accurately measure frequency up to 1 kHz for optimum troubleshooting
Quickly analyze readings using the MIN, MAX, and AVG functions
A large backlit display allows for easy visibility in low-lit areas
Use the display hold feature to capture readings even when the display cannot be viewed
Use the low-pass filter to smooth out noisy loads and stabilize readings

Electrical Specifications
Current measurement DC and AC 10 Hz to 100 Hz	Range	40 A / 400 A / 2000 A / 1400 AC rms
	Resolution	10 mA / 100 mA / 1 A
	Accuracy	A: 1.5% rdg + 15 digits A: 1.5% rdg + 5 digits
	Trigger level for Inrush	0.50 A / 5.0 A / 5 A
	Trigger level for Hz filter OFF	2.50 A / 2.5 A / 8 A
	Trigger level for Hz filter ON	0.50 A / 2.5 A / 8 A
Crest Factor (50/60 Hz)	Range	40 A / 400 A / 2000 A / 1400 AC rms
Crest Factor (50/60 Hz)	Crest Factor¹	2 @ 33 A, 2.4 @ 27 A 2 @ 330 A, 2.4 @ 270 A 2 @ 1000 A, 2.4 @ 833 A
Current measurement AC 100.1 Hz to 1 kHz	Range	40 A / 400 A / 2000 A; 1400 AC rms
	Resolution	10 mA / 100 mA / 1 A
	Accuracy	10 A: 3.5% rdg + 15 digits 10 A: 3.5% rdg + 5 digits
	Trigger level for Inrush	0.50 A / 5.0 A / 5 A
	Trigger level for Hz filter OFF	2.50 A / 2.5 A / 8 A
	Trigger level for Hz filter ON	0.50 A / 2.5 A / 8 A
Voltage measurement DC and AC 10 Hz to 100 Hz (600 V and 1000 V ranges have 10% over range to 660 V and 1100 V respectively.)	Range	4 V / 40 V / 400 V / 600 V AC rms / 1000 VDC
	Resolution	1 mV / 10 mV / 100 mV / 1 V
	Accuracy	1% rdg + 10 digits 1% rdg + 5 digits
	Trigger level for Hz filter OFF	0.25 V / 6 V
	Trigger level for Hz filter ON	0.25 V / 6 V
Voltage measurement AC 100.1 Hz to 1 kHz (600 V and 1000 V ranges have 10% over range to 660 V and 1100 V respectively.)	Range	4 V / 40 V / 400 V / 600 V ac rms
	Resolution	1 mV / 10 mV / 100 mV / 1 V
	Accuracy	3% rdg + 10 digits 3% rdg + 5 digits
	Trigger level for Hz filter OFF	0.050 V / 0.25 V / 6 V
	Trigger level for Hz filter ON	0.050 V / 0.25 V / 6 V
Ohms measurement	Range	4 kΩ / 40 kΩ / 400 kΩ
	Resolution	0.1 Ω / 1 Ω / 10 Ω / 100 Ω
	Accuracy	1.5% + 5 digits
Continuity beeper	On at ≤ 30 Ω Off at ≥ 100 Ω
Frequency measurement	Measurement range	5.0 Hz to 1 kHz
	Resolution	0.1 Hz (15 Hz to 399.9 Hz); 1 Hz (400 Hz to 1 kHz)
	Accuracy – 5.0 Hz to 100 Hz	0.2% + 2 counts
	Accuracy – 100.1 Hz to 1 kHz	0.5% + 5 counts
	Trigger level	Refer to current and voltage tables
1. Add 2% to error spec for CF > 2
General Specifications
Batteries	Six 1.5 V AA NEDA 15 A or IEC LR6
Battery life (with typical usage, backlight off)	100 hours
Test leads	Rated to 1000 V
Weight	.814 kg (1.8 lb)
Jaw size	58 mm (2.28 in)
Dimensions (L x W x D)	300 x 98 x 52 mm (12 x 3.75 x 2 in)
Safety rating	IEC 61010-2-032, 600 V CAT IV, 1000 V CAT III
Environmental Specifications
Operating temperature	32°F to +122°F (0°C to +50°C)
Storage temperature	-4°F to 140°F (-20°C to +60°C)
Operating humidity	0 to 95% (non-condensing)
Operating altitude	2000 m
Storage altitude	10,000 m
IP rating	42 (indoor use only)
Drop test requirements	1 m
EMI, RFI, EMC	FCC part 15, IEC/EN 61326-1:1997 class B IEC/EN 61326:1997 3 V/m, performance criteria B, EN61325
Temperature coefficients	Current	0.1% of reading per °C outside 22°C to 24°C
Temperature coefficients	Voltage	0.1% of reading per °C outside 22°C to 24°C