Megger RCDT330 RCD (Residual Current Device) Tester 50 – 280 V single phase plus backlight, auto-sequence & 2 wire leadset plus Prod- RCD testing and storage/download – BS1363 mains plug test lead – English
Original price was: £508.00.£480.00Current price is: £480.00. / £576.00 incl VAT
⚡ The RCDT330 is a downloadable RCD tester with built-in memory
⚡ Supplied in a tough, rubber-armoured case with protective cover
⚡ 1/2I, I and 5I RCD trip time testing
⚡ Selective breaker and DC breaker compatible
⚡ Compatible with 30, 100, 300 and 500mA, 10mA/1A and programmable RCDs
Only 1 left in stock
Description
Megger’s most advanced RCD tester, the RCDT330 improves upon the functionality of the RCDT320.
The RCDT330 is a downloadable RCD tester with built-in memory. This means that testing results can be stored directly on the instrument, viewed back as needed or sent directly to a PC for further analysis using Megger’s software (sold separately).
Suitable for use with 30, 100, 300 and 500mA RCDs, 10mA/1A RCDs, programmable RCDs plus DC and selective breakers, the RCDT330 can perform 1/2I, I and 5I tests, an RCD trip current ramp test, auto sequence test and also includes a frequency measurement function.
This tester is supplied in a tough, rubber-armoured case with protective cover for use in demanding conditions.
Megger RCDT330 RCD Tester Key Features
- 1/2I, I and 5I RCD trip time testing
- Selective breaker and DC breaker compatible
- Compatible with 30, 100, 300 and 500mA, 10mA/1A and programmable RCDs
- Performs ramping RCD trip current test
- Auto sequence testing
- 0 and 180° polarity selection
- Touch voltage display inhibit (selectable)
- Max/touch voltage at 25V or 50V
- Frequency measurement function
- 3 phase safe
- Large size clear display with backlight
- Battery status indication
- Auto power down
- Fuse blown indicator
- IP54 weatherproof
- Built-in memory with download
What’s Included?
- Megger RCDT330 RCD Tester
- Mains Plug Test Lead
- 2-Wire Test Lead with Prods and Clips
Megger RCDT300 Series Technical Specifications
| RCD Test Ranges (to EN61557-6) | |
| Supply Voltage | RCDT310: 100V to 280V (45Hz to 65Hz) RCDT320: 50V to 280V (45Hz to 65Hz) RCDT330: 50V to 280V (45Hz to 65Hz) Minimum voltage 71V for 300mA RCDs, 100V for 500mA RCDs and 205V for 1000mA RCDs |
| Test Current Accuracy | |
| No Trip Test | (1/2I): -8 to -2% |
| Trip Test | (I, 5I): +2% to +8% |
| Trip Time | ±1% ± 1ms |
| Voltage Measurement | |
| AC Range | 0 to 300V (25 to 450Hz) |
| Accuracy | ±2% ± 2 digits |
| Frequency Measurements (RCDT320/330 Only) | |
| Range | 25 to 450Hz |
| Accuracy | 25 to 199.9Hz ± 0.1Hz 200Hz to 450Hz ± 1Hz |
| Fault (Touch) Voltage | |
| Displayed Range | 0 to 50V |
| Error | +5%/+15% ± 0.5V |
| Programmable RCD Step Increments | |
| 10mA to 50mA | 1mA steps |
| 50mA to 500mA | 5mA steps |
| 500mA to 1000mA | 10mA steps |
| Test Result Storage (1000 Results) – RCDT330 Only | |
| Job Number | 256 locations |
| Distribution Board Number | 99 locations |
| Circuits | 99 locations |
| Phases | P1, P2, P3 |
| Temperature and Humidity | |
| Operating Range | -5 to 40°C |
| Operating Humidity | 93% RH at +40°C max |
| Storage Range | -25 to 70°C |
| Maximum Altitude | 2000m |
| Environmental Protection | IP54 |
| Safety | |
| Rating | IEC 61010-1 CAT III 300V phase to earth |
| Power Supply | |
| Batteries | 8 x 1.5V cells IEC LR6 type (AA alkaline) |
| Rechargeable | 8 x 1.2V NiCd or NiMH cells |
| Battery Life | 2000 consecutive tests |
| General Specs | |
| Weight | 980g |
| Dimensions | 203 x 148 x 78mm |
| E.M.C | In accordance with IEC61326-1 |
- Megger RCDT330 RCD Tester
- Mains Plug Test Lead
- 2-Wire Test Lead with Prods and Clips
🚚 Testersmans Shipping Policy
Free Mainland GB Delivery Over £150
We offer free delivery on most mainland Great Britain orders over £150 (ex VAT).
This applies across England, Wales, and most of Scotland, excluding certain remote or offshore postcodes.
If your order total falls just short of £150, or you’re a returning customer, feel free to contact us — we may be able to offer a discount code or delivery workaround.
📞 01945 738112 | ✉️ [email protected]
📦 UK Delivery Options
We work with both Royal Mail and DHL to offer reliable and flexible delivery across the UK:
- Royal Mail – Best suited for lighter parcels and for customers in remote regions, including the Highlands, Islands, and Northern Ireland.
- DHL – Ideal for most mainland UK orders, providing fast, tracked delivery and excellent reliability for time-sensitive shipments.
Our checkout system automatically displays the available delivery services for your postcode and order weight, ensuring you always see the most suitable options.
Note: Heavy, bulky, or freight-only orders will be charged separately.
Our website is designed for quick, transactional purchases rather than bulk or palletised orders.
Please contact us in advance for a tailored freight quotation if your order falls into this category.
⏱ Dispatch & Delivery Timing
We aim to dispatch all in-stock orders promptly, but delivery depends on both when you order and which service you select.
- UK orders: placed by 2:00 PM Monday–Friday are usually dispatched the same day.
- International orders: placed by 2:00 PM Monday–Thursday are usually dispatched the same day.
Orders placed after these times are processed the next working day. This means delivery may occur the following day or later, depending on the courier and service selected.
Once dispatched, your chosen delivery service determines how quickly your parcel arrives:
- Standard services We use Royal Mail Tracked 24 or DHL Parcel as our ‘Standard’ services. They are not guaranteed to arrive next working day.
- Premium services (e.g. Royal Mail Special Delivery or DHL by Noon) offer guaranteed delivery windows.
If your order is time-sensitive, we strongly recommend choosing a guaranteed service or contacting us before ordering to confirm availability.
Please note: For logistical reasons, we may occasionally adjust the delivery method selected at checkout. For example, smaller items may be better suited to letterbox-friendly packaging or may be at greater risk of delay or loss via certain services. We actively monitor courier and postal service disruptions—including strikes and delays—and may modify shipping arrangements to help ensure timely and secure delivery.
📅 Busy Periods & Delays
We always aim to dispatch promptly, but delivery times may be affected by:
- Seasonal demand (e.g. Christmas, bank holidays, or industry shutdowns)
- Courier network delays outside our control
- Supplier lead times or calibration requirements for certain equipment
If your delivery is time-critical, please contact us before ordering so we can confirm stock and courier availability.
🌍 International Shipping
We ship worldwide using UPS Express Saver® and other trusted global courier partners. All international shipments are tracked and generally dispatched Monday to Thursday to ensure smooth customs clearance and transit.
Estimated delivery times:
- Europe: 1–2 working days
- North America: 2–3 working days
- Asia-Pacific & Rest of World: 3–5 working days
Delivery times vary depending on location, customs clearance, and local courier performance.
💰 Taxes, Customs & Import Duties
International customers are responsible for any applicable taxes, customs charges, or import duties.
These are not included in our product or shipping prices.
Your courier will typically provide a secure payment link for any import charges once your parcel reaches customs.
If import fees are refused and the parcel is returned, we will issue a refund minus all incurred shipping and return costs.
📍 Using Your Own Courier
If you would prefer to arrange collection via your own courier (UK or international), please contact us before placing your order to coordinate collection from our Wisbech warehouse.
📝 Important Notes
- Please ensure your delivery address and contact number are correct at checkout.
- Undelivered parcels may be returned to us after a short holding period.
- Redelivery or return fees may apply, even if your order originally qualified for free delivery.
- By placing an order, you confirm your understanding and acceptance of this policy.