A FREE bundle (1000 PASS + 200 FAIL labels) is now available with this item. Just select it from the drop-down menu.
The Megger PAT420 is a dual voltage downloading PAT tester, suitable for all types of PAT testing.
Featuring an earth bond test at 200mA (IT safe), 10A & 25A, along with a full range of 240V & 110V PAT tests, the Megger PAT420 features robust design, combined with reliability. A full QWERTY keypad ensures asset data and descriptions can be easily added, and that test settings can be manually adjusted and the large 5.7" colour LCD display allows for a clear, menu driven test process.
With a memory capacity of 10,000 assets, and USB data transfer, the Megger PAT420 is a great tester for small to medium contractors.
The Megger PAT420 features:
Large 5.7" colour LCD display
10,000 asset memory capacity
110V & 240V PAT Tests
RCD Tests
Instant restart for faster testing across rooms
Can be used with optional barcode scanner or printer
Substitute leakage test: 40 V AC ±10% (nominal mains frequency)
Leakage current accuracy: ±5% ±5 digits
Leakage current resolution: 0.01 mA
Display range: 0 – 19.99 mA
Differential leakage & Touch current tests: available under nominal mains supply (per standard PAT420 capabilities). :contentReference[oaicite:2]{index=2}
Tests performed: Earth bond, insulation & polarity.
Polarity test voltage: 12 V.
Polarity checks: Lead OK, Live/Neutral short‑circuit, Live/Neutral reversed, Live/Neutral open‑circuit. :contentReference[oaicite:4]{index=4}
Portable RCD Test
Supply: nominal mains voltage
Test current accuracy: –8% to –2% (½×I), +2% to +8% (1×I & 5×I)
Trip‑time accuracy: ±1% ±5 digits
Trip‑time resolution: 0.1 ms
Display range: 0–1999 ms (½×I), 0–300 ms (1×I), 0–40 ms (5×I) :contentReference[oaicite:5]{index=5}
Fuse Test
Test voltage: 3.3 V DC
Result: audible beep if fuse is OK. :contentReference[oaicite:6]{index=6}
General / Environmental / Mechanical
Operating temperature: –10 °C to +50 °C
Storage temperature: –20 °C to +60 °C
Humidity: 90% RH @ –10 to +30 °C, 75% RH @ +30 to +50 °C
Maximum altitude: up to 2000 m
Ingress protection: IP40
Safety / EMC compliance: IEC 61010‑1 (CAT II 300 V), IEC 61326‑1 / IEC 61326‑2‑2 :contentReference[oaicite:7]{index=7}
Dimensions: 180 mm (H) × 255 mm (W) × 320 mm (L)
Weight: 4.4 kg :contentReference[oaicite:8]{index=8}
Why choose Instrotech for your electrical test equipment?
With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:
Free UK shipping on all orders
Access to our knowledgeable technical support team
Available calibration services to maintain safety compliance
A 90-day money-back guarantee for complete peace of mind
We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.
