Your dashboard services.
Register to access all tools.

SPD Test Device

  • For routine tests of surge protective devices
  • Compact dimensions
  • Suitable for mains and battery operation
  • Low battery indicator
  • Test leads included in delivery
  • Touch-protected test adapter for modular arresters of the XT/XTU/SP series available as an accessory


Insulated test leads are included in delivery.
lorem ipsum
Test adapter for modular arresters.
lorem ipsum
The sparkover performance of gas discharge tubes, varistors and Zener diodes can be tested.
lorem ipsum
Indication of the measured sparkover voltage.
lorem ipsum

PM 20

Combined device for testing the sparkover voltage of surge arresters (with gas discharge tubes / varistors / Zener diodes). Storage bag and measuring accessories included.

1 Product

Part No. 910511 PM 20

GTIN 4013364111424, Customs tariff No. (EU): 90308900, Gross weight: 1.47 kg, PU: 1.00 pc(s)



Additional information

PM20 arrester test device
SPD Test Unit for surge arresters based on
gas discharge tube/varistor/Zener diode technology
Allows for mains and battery supply
Low battery indication
Storage bag and accessories for measuring included
Nominal voltage: 8 – 12 V dc
Test parameters:
Test voltage: max. 1200 V dc
Test current (reference voltage): 1 mA dc, constant
Dimension of storage bag: 300 x 110 x 110 mm

Brand: DEHN
Type: PM 20
Part No.: 910511
or equivalent.



Technical data

Nominal voltage (d.c.) (UN ) 8-12 V d.c.
Test parameter: Test voltage max. 1200 V d.c.
Measured value indication alphanumeric, eight-digit LCD
Accessories included in delivery 2 test leads (each 1 m long), 2 safety tapping test clips, 1 plug-in power supply unit (230 V a.c.), 1 storage bag
Dimensions of the storage bag 300 x 110 x 110 mm

Product 910511 was added to Notepad.

Product 910511 was added to the cart.

back to top