Klein Tools 400A AC/DC TRMS Digital Clamp Meter

The Klein Tools CL390 400A AC/DC TRMS Digital Clamp Meter is a compact, high-performance multimeter designed for accurate measurement of AC/DC current, voltage, resistance, temperature, capacitance, and more. Engineered for professional electricians and HVAC technicians, it offers True RMS technology and advanced features in a rugged, easy-to-use format.

Key Features:

• 400A AC/DC Current Measurement: Precisely measures alternating and direct current through the clamp, ideal for troubleshooting and installations.
• True RMS Accuracy: Ensures accurate readings on non-linear loads commonly found in modern electrical systems.
• Backlit LCD Display: High-visibility screen with dual-line readout and backlight for clear viewing in low-light environments.
• Non-Contact Voltage Detection (NCV): Quickly identify live wires without making direct contact-great for safe first-level diagnostics.
• Thermocouple Input for Temperature Readings: Includes a Type K thermocouple for measuring temperature, essential for HVAC and motor diagnostics.
• Test Lead Storage & Easy Access Battery Compartment: Integrated back panel holds leads neatly, while the battery compartment is accessible without removing the housing.
• Auto Ranging + Manual Mode: Automatically selects the best range or allows for manual override for experienced users.

Measurement Functions:

• AC/DC Current: Up to 400A (via clamp)
• AC/DC Voltage: Up to 600V
• Resistance: Up to 60MΩ
• Capacitance: Up to 4000μF
• Frequency: 10Hz to 500kHz
• Duty Cycle: 1% to 99%
• Temperature: -40°C to 1000°C (via thermocouple)
• Continuity & Diode Test: Audible indicator for continuity and diode verification

Specifications:

• Model: CL390
• Display Count: 6000
• Jaw Opening: 1.18" (30mm) - accommodates conductors up to 750 MCM
• Safety Rating: CAT III 600V
• Battery: 2 × AAA (included)
• Backlight: Yes
• Dimensions: 8.35" x 2.60" x 1.44" (212mm x 66mm x 36.5mm)
• Weight: 0.54 lbs (245g)

Included Accessories:

• Test Leads
• Type K Thermocouple
• Carrying Pouch
• 2 × AAA Batteries
• User Manual

Applications:

• Electrical Maintenance & Troubleshooting: Ideal for electricians working on panels, circuits, and motors.
• HVAC Diagnostics: Accurately measures temperature, voltage, and current in air conditioning systems.
• General Facility Maintenance: Versatile enough for residential, commercial, and industrial applications.
• Safety & Compliance Testing: Non-contact voltage and continuity testing for quick safety checks.

The Klein Tools CL390 400A TRMS Clamp Meter is a feature-rich, reliable tool designed for professionals who need accurate readings and practical functionality in the field. Whether you're working in electrical maintenance or HVAC service, it's a compact powerhouse that delivers on performance and safety.

All orders are dispatched within 1-2 days of ordering.

Delivery varies by location, please see the expected timeframe to receive your product below:

• Metro: 1-4 business days

• Regional: 3-7 business days

No delivery to PO Box addresses or Parcel Lockers.

If you are unavailable at the time of delivery re-delivery fees may apply.

Change of Mind Returns:

We want you to love your product so if you are not completely satisfied with your purchase let us know.

Most products come with a 30 day change of mind policy. If at any time within the first 30 days from purchase date you are not completely satisfied with your order, please contact us for return approval. Once received and inspected, we will facilitate an agreed resolution.

Please Note:

• Postage is paid by the customer

• The product must be returned in the original packaging, brand new in un-used condition

• We do not accept responsibility for return items until they reach our warehouse, so we strongly recommend using tracking and/or insurance for the delivery

• Fees may apply

Warranty Claims:

Most of our products are supported by a 12 month warranty. This warranty covers all manufacturer faults with the product. Some of our products may have a different warranty period, please check the product description for this. Should an issue arise with your order, please contact us to raise a warranty claim.