• CAT IV 600 V
• Charge current: 5 mA
• 4 mA noise rejection and software filtering
• Mains or battery powered
• Digital/analogue backlit display
• Variable test voltage from 50 to 5000V
• Automatic IR, PI, DAR, SV and DD tests
• Measures to 15 TΩ 
• RS232 and USB download of results to Megger Download Manager
• On board memory for results storage

Now CAT IV, the S1-554/2 was designed specifically to assist you with the testing and maintenance of high voltage electrical equipment. The case is incredibly rugged and easy to carry, being made of tough polypropylene and achieving an ingress protection rating of IP65. In addition, the model number is marked on both the top and side of the case for ease of identification in stores or vehicles.

As well as measuring insulation resitance to 15 TΩ, the S1-554/2 also offers various diagnostic tests such as Polarisation index, Dielectric Absorption Ratio, Step Voltage and Dielectric discharge.

The instrument has a large easy to read backlit LCD display making it equally suitable for use in both bright unlight and poorly lit environments. Information displayed includes resistance, voltage, leakage current, capacitance, battery status and time constant. In addition, the elapsed time of the test is displayed constantly removing the need for separate timer. 

MIT400: basic CATIV 600 V with 250 V/500 V/1000 V insulation MIT400-EN

MIT410: as MIT400 + 50 V, 100 V, PI and DAR

MIT410-EN NSN:6625-99-354-2757

MIT415: 10 V, 25 V, 50 V, 100 V, 250 V, 500 V, PI and DAR 1000-351

MIT420: as MIT410 + result storage and recall + 200 GΩ

MIT420-EN NSN 6625-99-169-4728

MIT420-MIN: (NATO version - no batteries) 1000-309 NSN 6625-99-169-5675 MIT430: as MIT420 with Bluetooth download

MIT430-EN MIT40X: Special applications - selectable IT voltage 10-100 V MIT40X-EN

Included accessories

Hard case 5410-420

2 wire lead set to CAT IV 600 V, consisting of: Red and black leads, probes and clips with 1 x red long probe

Calibration certificate

SP5 Switched probe (not MIT400 or MIT40X) 1002-774

Owners information user guide CD

Optional accessories

Replacement 2 wire test lead set 1002-001

2 wire 500 mA fused test lead set 1002-015

Rubber boot with stand 6231-802

Pouch - test and carry case 2001-322