SKU: 1002619793

Megger RCDT320 1000mA CAT III 300V Residual Current Device Tester

Sale price$246.27 Regular price$273.63
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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

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Description

Megger RCDT320 1000mA CAT III 300V Residual Current Device TesterMegger RCDT320 1000mA CAT III 300V Residual Current Device Tester RCDT320 covers a wider supply voltage range of 50 V to 280 V, allowing use with centre tapped 110 V supplies. It incorporates ramp testing, for RCD tripping current measurement, and the unique Megger auto sequence test feature, which saves time by allowing the tester to conduct all the RCD tests, and to store the results while the operator stands by the RCD, resetting it as appropriate.

Megger RCDT320 1000mA CAT III 300V Residual Current Device Tester

RCDT320 covers a wider supply voltage range of 50 V to 280 V, allowing use with centre-tapped 110 V supplies. It incorporates ramp testing, for RCD tripping current measurement, and the unique Megger auto sequence test feature, which saves time by allowing the tester to conduct all the RCD tests, and to store the results while the operator stands by the RCD, resetting it as appropriate.

RCDT320 has an extended operating current range to cover 10 mA to 1,000 mA devices, and the ability to measure AC supply voltage and frequency is added. The large liquid crystal display for test results is backlit in this model, making it easier to use in locations with low ambient light levels.

Features:

  • Tests standard, Type A, selective, and programmable RCDs
  • Ramp testing (RCDT320/330)
  • Auto (Remote) testing (RCDT320/330)
  • 3 Phase safe Enables testing on 110 V centre tapped supplies (RCDT320/330)
  • Tough rubber armoured case with built-in cover
  • Weatherproof to IP54
  • USB interface for downloading test result (RCDT330)

Specifications:

    • Supply Voltage: 50V - 280V 45 Hz to 65 Hz
Test Current Accuracy
    • No Trip Test: (1/2I) –8% to –2%
    • Trip Test: (I, 5I) +2% to +8%
    • Trip Time: ±1% ±1ms
Voltage Measurement
    • Range (AC): 0 V - 300 V 25 Hz to 450 Hz
    • Accuracy: ±2% ±2 digits
Frequency
    • Range (AC): 25 Hz to 450 Hz
    • Accuracy: 25.0 Hz to 199.9 Hz ±0.1 Hz, 200 Hz to 450 Hz ±1 Hz
Power Supply
  • Batteries: 8 x 1,5 V cells IEC LR6 type (AA alkaline)
  • Rechargeable: 8 x 1.2 V NiCd or NiMH cells
  • Battery Life: 2000 consecutive tests
  • E.M.C: In accordance with IEC61326-1

Included Items:

  • Megger RCDT320 RCD Tester
  • Mains plug test lead (BS1363)
  • 2-wire test lead with prods and clips

Data Sheet:

Click Here for Data Sheet
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 1002619793

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4.6 ★★★★★
Based on 1693 reviews
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Matthew Anderson
Houston, US
★★★★★ 5
No problems after a year and a half
Color: Dogwood & Calming, Size: Medium
Have been regularly buying these for my corgi for about a year and a half. The 2 pack lasts about a month or 2 each time. Pieces break off in small enough pieces that they safely pass through his digestive system. He gnaws each one down to about 1/4 the original size before we take it away and give him a new one. He continues to have regular bowel movements and has a healthy appetite so I can’t imagine any problems arising after so long. I have tried other alternatives and every other similar chew breaks off in larger pieces and didn’t feel comfortable letting him chew/eat them. I noticed there are a few 1 star reviews saying their dogs got sick off these but after a year and a half I have had 0 issues with this product. I guess it depends on the dog and how big of pieces they are swallowing. My dog ingests pieces about the size of a grain of rice so just pay attention and you should be fine.
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Reviewed in the United States on February 18, 2026
T
Verified Purchase
terlynn4
Grantham, US
★★★★★ 5
Long lasting and safer alternative to sticks
Color: Dogwood & Calming, Size: Medium
These are great, very durable, and have lasted a very long time. Much safer for my dogs than the random sticks they find in the yard. They do get shorter with chewing eventually, but they don't break off in little chunks like I've seen with some nylon chews, and they don't splinter like wood. Medium size works well for both my 16 lb Cavalier and my 60 lb Pyrenees/Golden mix. They're both moderate-to-aggressive chewers, though size obviously affects how much damage they can do. I wish you could buy the hemp chew separately because that one is very much a favorite in my house, so after 2 years and 2 purchases, I have barely any left of the remaining hemp chew, but still 2 of the dogwood chews that neither dog is as interested in anymore. I'd love to buy a couple more of just the hemp one.
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Reviewed in the United States on April 30, 2026
S
Verified Purchase
Shannon Brace
Alexandria, US
★★★★★ 5
Your dog will thank you.
Color: Dogwood & Fresh Breath, Size: Large
My dogs loves to chew on these. They make a small mess but not as bad as other chews. They are food for keeping teeth clean.
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Reviewed in the United States on May 31, 2026
A
Verified Purchase
Anna
Natrona Heights, US
★★★★★ 5
Nice chew toy
Color: Dogwood Mushroom, Size: Medium, Color: Dogwood Mushroom, Size: Medium
Super durable and puppy loves it. It was a bit hard for her at first but now at 5 months it’s one of her favorite things to gnaw on! It is heavy for the size but seems to be great quality and has given many hours of chew time with minimal wear.
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Reviewed in the United States on March 12, 2026
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Jennifer
Waukegan, US
★★★★★ 4
Long lasting
Color: Dogwood & Calming, Size: Medium
My dogs love these bones.
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Reviewed in the United States on March 25, 2026

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