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Martindale MARPD440SX | PD440SX 440V AC Proving Unit | 4 Ranges with CALCHECK
Part Number : MARPD440SX
The PD440SX (MARPD440SX) proves voltage indicators, multimeters and test lamps up to 440V and adds Martindale's CALCHECK function. CALCHECK lets electricians verify the insulation and low-resistance ranges of 18th Edition multifunction instruments and insulation testers on site, highlighting possible calibration issues before certifying an installation. Individual LEDs are matched to voltage indicator thresholds, and it works with both high and low impedance testers.
Key features
- Proves indicators and test lamps up to 440V
- CALCHECK for multifunction installation tester verification
- Individual LEDs matched to indicator thresholds
- Low battery indicator, colour coded output
- Over-moulded case and MAG3 magnetic hanger
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