Fluke 377 True-rms Non-Contact Voltage AC/DC Clamp Meter with iFlex

The Fluke 377 True-rms AC/DC Clamp Meter with iFlex redefines flexibility in electrical measurement. Designed for demanding technicians and engineers, this instrument combines a traditional hinged jaw with a flexible Rogowski coil probe, enabling current measurements around conductors that are otherwise inaccessible. The non-contact voltage detection feature adds a critical safety layer, allowing users to verify live circuits without direct contact. Whether performing panel upgrades, motor diagnostics, or complex power distribution analysis, the Fluke 377 delivers the accuracy and reach required for modern electrical systems.

Fluke 377/E Key Features

This True-rms clamp meter provides precise measurements across AC and DC currents, voltage, resistance, and capacitance. The flexible current probe extends the range up to 2500 A, while the hinged jaw handles standard measurements up to 999.9 A. Non-contact voltage detection works on conductors up to 1000 V, and the included iFlex probe slips around bulky cables or through tight spaces. Additional features include a backlit LCD, Min/Max/Avg recording, and a built-in thermometer input for expanded troubleshooting capabilities.

• AC Current Jaw Range: 999.9 A
• AC Current Flexible Probe Range: 2500 A
• AC Voltage Field Sense: 1000 V
• AC Voltage Test Leads Range: 600.0 V to 1000 V
• Resolution: 0.1 A (Jaw), 1 A (Flexible)
• Accuracy: 2 % ±5 digits (Jaw AC), 3 % ±5 digits (Flexible AC)
• Crest Factor: 3 @ 500 A (Jaw), 3.0 at 1100 A (Flexible)
• Jaw Position Sensitivity: A 0.5 in, B 0.8 in, C 1.4 in
• Flexible Current Probe Cable Length: 1.8 m
• Rogowski Coil Length: 450 mm
• Operating Temperature: -10 °C to 50 °C
• Ingress Protection: IP30 (jaw closed)

Who Needs the Fluke 377/E?

Electrical maintenance technicians will appreciate the Fluke 377/E when working on energized panels where space is limited and safety is paramount. The non-contact voltage feature allows quick verification of live status before probing, reducing the risk of accidental shock. Field service engineers benefit from the flexible iFlex probe, which can wrap around large bus bars or cables without disconnecting the circuit, making it ideal for retrofit work and energized equipment troubleshooting.

Industrial engineers maintaining large motor complexes and power distribution systems will find the 2500 A flexible range indispensable. The ability to measure current without breaking the circuit saves significant downtime during preventive maintenance schedules. Additionally, procurement buyers specifying test equipment for fleet maintenance or safety compliance programs will value Fluke’s reputation for reliability and the comprehensive warranty support available through MME.

Even experienced hobbyians and DIY enthusiasts working on home electrical panels will find the user-friendly interface and safety features valuable. The clear display and intuitive controls reduce the learning curve, while the robust build quality ensures the instrument withstands daily site use. No matter the application, the Fluke 377/E provides the measurement versatility and safety features that professionals demand.

Fluke 377/E Applications

The Fluke 377 excels in panelboard troubleshooting, where electricians can use the non-contact voltage detection to identify live terminals before inserting test leads. The flexible probe is equally useful for measuring current on oversized conductors in industrial switchgear, allowing measurements around cables that would require disconnection with a standard jaw clamp. This capability is vital for energy audits and load balancing studies where accurate current profiling is required without system interruption.

In motor maintenance scenarios, the Fluke 377/E enables technicians to check motor winding currents and identify phase imbalances without removing motor leads. The True-rms accuracy ensures accurate readings on non-linear loads common in modern VFDs and electronic equipment. The frequency measurement function also aids in diagnosing harmonic distortion issues that can cause overheating and premature equipment failure. For renewable energy installations, the clamp meter’s wide measurement range supports solar inverter and battery bank diagnostics.

Why Buy Fluke 377/E from Mohammad Mahdi Electronics?

Mohammad Mahdi Electronics is your trusted source for genuine Fluke testing instruments in the UAE. We stock the complete Fluke 377/E package, including the flexible iFlex probe and all necessary test leads, ensuring you receive the complete measurement system out of the box. Our team provides product expertise to help you select the right clamp meter for your specific application, whether you need the standard jaw configuration or the extended range flexible probe.

When you purchase from Mohammad Mahdi Electronics, you benefit from authentic product sourcing, manufacturer warranty registration assistance, and local technical support. We understand the demands of the regional electrical market and can advise on Fluke 377/E suitability for your specific voltage and current requirements. Our efficient delivery service ensures your measurement tools arrive ready for immediate deployment, minimizing project downtime.

Fluke 377/E Complete Specifications

Temperature Coefficients: Add 0.1 x specified accuracy for each degree C above 28 °C or below 18 °C. Operating Humidity: Non-condensing; <10 °C: ≤90 % RH; 10 °C to 30 °C: ≤75 % RH; 30 °C to 40 °C: ≤45 % RH; 40 °C to 50 °C: ≤45 % RH.

Ready to order your Fluke 377/E Clamp Meter? Mohammad Mahdi Electronics offers fast shipping across the UAE and authentic manufacturer warranty support. Contact our team today to discuss your measurement requirements and receive expert guidance on the Fluke 377/E iFlex system.</CTA

Fluke 377/E Specifications

Electrical
AC Current: Jaw
Range	999.9 A
Resolution	0.1 A
Accuracy	2 % ±5 digits (10 Hz to 100 Hz) 2.5 % ±5 digits (100 Hz to 500 Hz)
Crest Factor (50/60 Hz)	3 @ 500 A 2.5 @ 600 A 1.42 @ 1000 A Add 2 % for C.F. >2
AC Current: Flexible Current Probe
Range	2500 A
Resolution	1 A (≤2500 A) 0.1 A (≤999.9 A)
Accuracy	3 % ±5 digits (5 Hz to 500 Hz)
Crest Factor (50/60Hz)	3.0 at 1100 A 2.5 at 1400 A 1.42 at 2500 A Add 2 % for C.F. >2
Position Sensitivity
	Distance from Optimum	i2500-10 Flex	i2500-18 Flex	Error
	A	0.5 in (12.7 mm)	1.4 in (35.6 mm)	± 0.5 %
	B	0.8 in (20.3 mm)	2.0 in (50.8 mm)	± 1.0 %
	C	1.4 in (35.6 mm)	2.5 in (63.5 mm)	± 2.0 %
Measurement uncertainty assumes centralized primary conductor at optimum position, no external electrical or magnetic field, and within operating temperature range.
DC Current
Range	999.9 A
Resolution	0.1 A
Accuracy	2 % ±5 digits1
[1]When using the ZERO function to compensate for offsets
AC Voltage: Field Sense
Range	1000 V
Resolution	1 V (≤1000V)
Accuracy	≤4/0 AWG	3 % ±5 digits (45 Hz to 66 Hz)
	≥4/0 AWG	5 % ±5 digits (45 Hz to 66 Hz)
Position wire as close as possible to jaw opening (see illustration).
AC Voltage: Test Leads
Range	600.0 V 1000 V
Resolution	0.1 V (≤600.0 V) 1 V (≤1000 V)
Accuracy	1 % ±5 digits (20 Hz to 500 Hz)
DC Voltage
Range	600.0 V 1000 V
Resolution	0.1 V (≤600.0 V) 1 V (≤1000 V)
Accuracy	1 % ±5 digits
mV dc
Range	500.0 mV
Resolution	0.1 mV
Accuracy	1 % ±5 digits
Amps Frequency: Jaw
Range	5.0 Hz to 500.0 Hz
Resolution	0.1 Hz
Accuracy	0.5 % ±5 digits
Trigger Level	5 Hz to 10 Hz, ≥10 A 10 Hz to 100 Hz, ≥ 5 A 100 Hz to 500 Hz, ≥ 10 A
Amps Frequency: Flexible Current Probe
Range	5.0 Hz to 500.0 Hz
Resolution	0.1 Hz
Accuracy	0.5 % ±5 digits
Trigger Level	5 Hz to 20 Hz, ≥25 A 20 Hz to 100 Hz, ≥20 A 100 Hz to 500 Hz,≥25 A
Resistance
Range	60.00 kΩ 6000 Ω 600.0 Ω
Resolution	0.1 Ω (≤600.0 Ω) 1 Ω (≤6000 Ω) 10 Ω (≤60.00 kΩ)
Accuracy	1 % ±5 digits
Capacitance
Range	1000 μF
Resolution	0.1 μF (≤100.0 μF) 1 μF (≤1000 μF)
Accuracy	1 % ±4 digits
Mechanical
Size (L x W x H)	274 mm x 86 mm x 47 mm
Weight (with Batteries)	463 g
Jaw Opening	34 mm
Flexible Current Probe Diameter	7.5 mm
Flexible Current Probe Cable Length (head to electronics connector)	1.8 m
Rogowski Coil Length	450 mm
Environmental
Operating Temperature	-10 °C to 50 °C
Storage Temperature	-40 °C to 60 °C
Operating Humidity (without condensation)	Non condensing (<10 °C) ≤90 % RH (10 °C to 30 °C) ≤75 % RH (30 °C to 40 °C) ≤45 % RH (40 °C to 50 °C)
Temperature Coefficients	Add 0.1 x specified accuracy for each degree C >28 °C or <18 °C
Ingress Protection	IEC 60529: IP30 (jaw closed)
Operating Altitude	2000 m
Storage Altitude	12 000 m
Electromagnetic Compatibility (EMC)
	International	IEC 61326-1: Portable Electromagnetic Environment IEC 61326-2-2, CISPR 11: Group 1, Class B
	Group 1: Equipment has intentionally generated and/or uses conductively-coupled radio frequency energy that is necessary for the internal function of the equipment itself.
	Class B: Equipment is suitable for use in domestic establishments and in establishments directly connected to a low voltage power supply network which supplies buildings used for domestic purposes. Emissions that exceed the levels required by CISPR 11 can occur when the equipment is connected to a test object.
	Korea (KCC)	Class A equipment (Industrial Broadcast & Communications Equipment)
	Class A: Equipment meets requirements for industrial electromagnetic wave equipment and the seller or user should take notice of it. This equipment is intended for use in business environments and not to be used in homes.
USA (FCC)	47 CFR 15 subpart B. This product is considered an exempt device per clause 15.103.
Safety
General	IEC 61010-1: Pollution degree 2
Measurement	IEC 61010-2-032: CAT III 1000 V / CAT IV 600 V IEC 61010-2-033: CAT III 1000 V / CAT IV 600 V
Current Clamp for Leakage Current Measurements	IEC 61557-13: Class 2, ≤30 A/m
Wireless Radio
Radio Frequency Certification	FCC ID: T68-FBLE IC:6627A-FBLE
Frequency Range	2405 MHz to 2480 MHz
Output Power	<100 mW
Radio Frequency Data	Radio Frequency Data For Class A Devices SIMPLIFIED EU DECLARATION OF CONFORMITY Hereby, Fluke declares that the radio equipment contained in this Product is in compliance with Directive 2014/53/EU. The full text of the EU declaration is available at the following internet address: https://dam-assets.fluke.com/s3fs-public/FLK_RED_1aeng0900.pdf.