Klein Tools CL390 AC/DC Digita...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$192.83
$142.83

Klein Tools CL390 AC/DC Digital Clamp Meter Auto-Ranging 400 Amp TRMS with Temperature Measurement

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Model: CL390
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$192.83
$142.83
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Klein Tools CL390 AC/DC Digital Clamp Meter Auto-Ranging 400 Amp TRMS with Temperature Measurement

Professional True RMS Digital Clamp Meter with Advanced Measurement Capabilities

The Klein Tools CL390 delivers professional-grade electrical measurement with auto-ranging 400 amp AC/DC current capacity and True Root Mean Squared (TRMS) technology for accurate readings. This versatile digital clamp meter features CAT III 600V safety rating with double insulation, high-visibility reverse contrast LCD display, and comprehensive measurement functions including temperature measurement with K-Type thermocouple. Built to withstand 6.6-foot drops and designed for reliable performance in residential, office, and light-industrial environments.

Professional Features & Benefits

  • 400 Amp AC/DC Current Measurement: Auto-ranging TRMS technology provides accurate current readings up to 400 amps for comprehensive electrical diagnostics and troubleshooting.
  • CAT III 600V Safety Rating: Class 2 double insulation safety rating with CE certification ensures safe operation in demanding electrical environments up to 600 volts.
  • High-Visibility Reverse Contrast LCD: 4000 count display with reverse contrast technology delivers clear readings in all ambient lighting conditions for improved visibility.
  • Temperature Measurement Capability: Integrated K-Type thermocouple probe measures temperatures from -40� to 1832�F (-40� to 1000�C) for comprehensive system diagnostics.
  • Comprehensive Measurement Functions: TRMS AC/DC current and voltage, resistance up to 40 M�, frequency, capacitance up to 4000 �F, continuity, duty cycle, and diode test capabilities.
  • Rugged Construction: Built to withstand 6.6-foot drops with ABS housing and auto power-off after 10 minutes to conserve battery life for reliable field use.
  • Non-Contact Voltage Detection: Integrated NCVT in clamp jaw provides safe voltage detection without direct contact for enhanced safety during electrical work.

Technical Specifications

  • Ac Voltage: 600 V
  • Auto Power Off: Yes
  • Batteries: 3 x AAA
  • Capacitance: 4000 �F
  • Current: 400 A AC/DC
  • Dc Micro Amp: 200 �A
  • Dc Polarity Indicator: Yes
  • Dc Voltage: 600 V
  • Department: Electrical
  • Depth: 8.4500 in
  • Display: 4000 Count Reverse Contrast LCD
  • Drop Protection: 6.6' (2 m)
  • Frequency: 10 Hz to 60 kHz for 8 V to 220 V AC RMS
  • Height: 1.5060 in
  • Jaw Size: 1.6" (4.1 cm)
  • Material: ABS/Electronics
  • Ohms Resistance : 40 M�
  • Overall Height: 1.5" (3.8 cm)
  • Overall Length: 8.45" (21.5 cm)
  • Overall Width: 3.5" (8.9 cm)
  • Product Details: AC/DC Current TRMS Clamp
  • Product Function: TRMS, AC/DC Current, NCVT, AC/DC Voltage, Resistance, DC microamp, Frequency, Capacitance, Continuity, Duty Cycle, Diode Test, and Temperature
  • Product Group: Tool Sets
  • Product Subgroup: Tool Kits
  • Product Type: AC/DC Current TRMS Clamp
  • Product Voltage: 600 V AC/DC
  • Standard: CATIII 600V, Class 2, Double Insulation Safety Rating, CE Certified
  • Temperature Range: -40� - 1832�F (-40� - 1000�C)
  • Weight: 0.5160 lbs
  • Width: 3.5120 in

Installation & Operation

  1. Mount the unit in a suitable location with appropriate clearance and access for connections and service.
  2. Connect utility and load conductors following applicable guidelines and the manufacturer's instructions.
  3. Wire generator or power input according to the provided voltage/phase specifications and compatible capacity.
  4. Configure any available load management or control features as supported by the provided specifications.
  5. Test automatic transfer or operational functionality and verify proper performance before placing into service.
  6. Complete final inspection and follow ongoing maintenance practices appropriate to the product category.

Professional Applications

  • Electrical Troubleshooting and Diagnostics
  • HVAC System Maintenance and Repair
  • Industrial Equipment Testing
  • Commercial Facility Maintenance
  • Residential Electrical Service
  • Motor and Drive System Analysis
  • Power Quality Assessment

Why Choose Klein Tools Quality?

Klein Tools delivers professional-grade reliability with CAT III 600V safety certification, Class 2 double insulation rating, and rugged construction built to withstand 6.6-foot drops. The comprehensive measurement capabilities, TRMS accuracy, and durable ABS housing ensure dependable performance for demanding electrical applications across residential, office, and light-industrial environments.

Manufacturer Resources

Product Specs

Ac Voltage:
600 V
Auto Power Off:
Yes
Batteries:
3 x AAA
Capacitance:
4000 µF
Current:
400 A AC/DC
Dc Micro Amp:
200 µA
Dc Polarity Indicator:
Yes
Dc Voltage:
600 V
Depth:
8.4500 in
Display:
4000 Count Reverse Contrast LCD
Drop Protection:
6.6' (2 m)
Frequency:
10 Hz to 60 kHz for 8 V to 220 V AC RMS
Jaw Size:
1.6" (4.1 cm)
Ohms Resistance :
40 MΩ
Overall Height:
1.5" (3.8 cm)
Overall Length:
8.45" (21.5 cm)
Overall Width:
3.5" (8.9 cm)
Standard:
CATIII 600V, Class 2, Double Insulation Safety Rating, CE Certified
Temperature Range:
-40° - 1832°F (-40° - 1000°C)
Department:
Electrical
Product Group:
Tool Sets
Product Subgroup:
Tool Kits
Product Type:
AC/DC Current TRMS Clamp
Product Voltage:
600 V AC/DC
Product Function:
TRMS, AC/DC Current, NCVT, AC/DC Voltage, Resistance, DC microamp, Frequency, Capacitance, Continuity, Duty Cycle, Diode Test, and Temperature
Product Details:
AC/DC Current TRMS Clamp
Product Height:
1.5060 in
Product Material:
ABS/Electronics
Product Weight:
0.5160 lbs
Product Width:
3.5120 in

Klein Tools CL390 – Frequently Asked Questions

How fast can I get the Klein Tools CL390 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Klein Tools CL390 come with a warranty?
Absolutely. The Klein Tools CL390 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Klein Tools CL390?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Klein Tools CL390 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.