Martindale PD440SRDX Proving Unit 200mA 440 V

View all Proving Units

Subtotal (1 unit)*

£124.84

(exc. VAT)

£149.81

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • 8 unit(s) ready to ship
  • Plus 7 unit(s) shipping from 06 March 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 +£124.84

*price indicative

Calibration Options:

presentation
Martindale PD440SRDX Proving Unit 200mA 440 V
Calibration Type:
RSCAL
RS Stock No.
288-1157

Each

£166.84

(exc. VAT)

£200.21

(inc. VAT)

RS Stock No.:
288-1138
Mfr. Part No.:
PD440SRDX
Brand:
Martindale
Find similar products by selecting one or more attributes.
Select all

Brand

Martindale

Product Type

Proving Unit

Output Voltage

440 V

Battery Type

AA Alkaline

Power Source

Battery

Minimum Operating Temperature

-10°C

Maximum Operating Temperature

40°C

Width

80 mm

Length

150mm

Height

35mm

Weight

355g

Standards/Approvals

No

Test Current

200mA

RoHS Status: Exempt

COO (Country of Origin):
PH
The PD440SRDX is fast and easy to use, instantly supplying the full test voltage for both high and low-impedance voltage indicators, test lamps and meters. It comes complete with an over-moulded low-profile case and a magnetic hanger. The PD440SRDX has a unique CALCHECK feature, making it easy to verify the insulation and low resistance ranges on 18th Edition multifunction testers Ideal for proving indicators and measurement devices up to 440V AC or DC and to check the operation of 18th Edition installation testers.

Switchable AC / DC output mode via push button

CALCHECK for verification of resistance ranges on 18th Edition testers

Stepped voltage output matched to two-pole tester thresholds

Tough overmoulded low profile design

Long battery life with low battery indicator and auto power off

Red Lockout in use on machinery, stating "Do Not Remove, Locked Out"
On the lookout for a Lockout?
Ensure safety during testing—pair your Proving Unit with a Lockout device to prevent accidental energisation, protect personnel, and stay compliant with safety standards.
Shop Lockouts

Related links