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 RCD tests and store the results while the operator stands by the RCD, resetting it as appropriate.

Even if they are inadvertently connected to a live three-phase supply, RCD testers in Megger’s RCDT300 range remain undamaged, and present no safety hazard to the user. Introduced after extensive customer research into the requirements of electrical contractors, these innovative instruments combine rugged construction with straightforward operation, and they are offered at very competitive prices.

Available in three models RCDT300 RCD testers feature a compact design, making them easy to use, and tough with a rubber overmoulding for additional protection, plus a built-in display cover. All models in the range are water and dust resistant, with an IP54 rating.

Key Features :

• Tests standard, DC, selective and programmable RCDs
• Ramp testing (RCDT320/330)
• Auto (Remote) testing (RCDT320/330)
• Three-phase safe
• Enables testing on 110 V centre tapped supplies
• Tough rubber armoured case with built-in cover
• Weatherproof to IP54

Includes : 

• RCDT320 RCD Tester 10, 30, 100, 300, 500,1000 mA
• Mains plug test lead (BS1363)
• 2-wire test lead with prods and clips