HIOKI AC LEAKAGE CLAMP METER CM4001, Leakage Current Meter with Remarkable Ease of Use. Double Your Work Speed with Innovative Jaw Design, Wireless support
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Product Description
Use the CM4001 to easily clamp within crowded cables in order to reduce work time and improve safety. With guaranteed accuracy from 0.60 mA to 600.0 A, the CM4001 provides a one-stop solution for a variety of applications. A built-in comparator function also helps you find issues much faster.
- Easily transfer measurement data to your smartphone or tablet by using our free app GENNECT Cross or to an Excel® file. (Wireless Adapter Z3210 is necessary)
- Slim jaws let you work with ease
- Measure everything from leakage to load
- Identify intermittent GFCI and RCD trips to prevent unplanned equipment downtime by testing for earth leakage current

Basic specifications
- AC Current range : 60.00 mA/ 600.0 mA/ 6.000 A/ 60.00 A/ 600.0 A, 5 ranges (40 Hz to 1 kHz, True RMS) / Basic accuracy (45-66 Hz): ±1.5% rdg ±5 dgt (60.00 mA to 6.000 A), ±2.5% rdg ±5 dgt (60.00 A to 600.0 A) / Guaranteed accuracy: from 0.60 mA to 600.0A
- AC Voltage range: N/A
- Frequency range: 40.0 Hz to 999.9 Hz
- Crest factor: 4.5 (4000 counts or less) / 3 (more than 4000 counts, 6000 counts or less)
- Filter function: Cut off frequency: 180 Hz ±30 Hz at filter ON (-3 dB)
- Output function: N/A
- Harmonic levels: [With Z3210 installed] Current harmonic levels up to 30th, Content factor, Total harmonic distortion ratio *Harmonics can be displayed with our free app GENNECT Cross.
- Other functions: Comparator function, record Max/Min/Avg value, backlight, data hold, auto power off, AC inrush function
- Display: Display refresh rate: 5 times/s
- Power supply: LR03 alkaline battery × 1; Continuous operating time: 32 hr. (without Z3210 installed), 16 hr. (with Z3210 installed and using wireless communications)
- Core jaw diameter: φ 24 mm (0.94 in)
- Dimensions and mass: 37 mm (1.46 in) W × 160 mm (6.30 in) H × 27 mm (1.06 in) D, 115 g (4.1 oz.)
- Included accessories: Carrying case × 1, Strap × 1, Instruction manual × 1, Operating Precautions × 1, LR03 alkaline battery × 1
Global Shipping
ROAExpo provides Global Shipping to over 130+ Countries worldwide.
All orders are shipped from our Central Logistics Hub, currently operated in South Korea, where ROAExpo directly performs free pre-shipment QQ Inspection (Quality & Quantity Inspection). Additional regional logistics hubs will be expanded globally in the future.
Available Shipping Methods
- Sea Parcel – Most economical option for heavy or bulk orders
- Air Parcel – Balanced option between cost and delivery speed
- EMS – International postal delivery service
- FedEx – Fast express courier service
- UPS – Premium international courier service
Shipping availability and transit time may vary depending on destination country and local regulations.
Shipping Cost Calculation
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Products from different brands or stores can be combined into one shipment when shipped from the same origin country.
You can combine products from multiple brands or stores in one cart to reach the USD $150 purchase threshold and receive shipping discounts, as long as the products are shipped from the same origin country.
The Final Shipping Cost Before Payment is clearly displayed at checkout. There are No Hidden Fees after payment confirmation.
Shipping Discount Benefits – Global Free Shipping (GFS)
- Orders over USD $150 with total shipping weight under 3kg may qualify for Free Shipping
- If total shipping weight exceeds 3kg, customers may receive up to USD $30 Shipping Discount
- The GFS Coupon (Code: ENJOYGFS-KOR) is automatically issued to eligible members and can be found in the member’s account after login. There is no limit on the number of uses.
- The GFS coupon may be combined with other promotions or coupons
- Eligibility may vary depending on product category, shipping method, and stock availability
Final discounted shipping cost is shown before payment confirmation.
Seasonal shipping promotions are announced on our homepage banners and member emails.
Order Processing & Tracking
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Once shipped, a Tracking Number will be provided to the customer.
Delivery time may vary due to customs clearance, local carrier operations, weather conditions, or public holidays.
Customs & Import Duties
Import duties, taxes, and customs fees may be charged by the destination country and are the responsibility of the customer unless otherwise stated.
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All products sold on ROAExpo are Authentic Products sourced directly from Official Suppliers or manufacturers.
Returns Due to Defect or Shipping Error
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Returns for Change of Mind
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Refund Processing
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Non-Returnable Items
Certain products may not be eligible for return due to hygiene, safety, or manufacturer restrictions.
Customer Support
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☎️ +82-2-6951-0318 (Available Monday–Friday, 10:00–17:00 KST)


