Protection from Electrocution

requires reliable Earth Fault Protection


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Cable Monitor


Surge suppressor

Electrical Protection devices are available from logoJojen supplies to supplement system protection by monitoring the earthing integrity of an electrical installation.

It is Jojen's mission to cater for special requirements in the electrical protection field by providing custom designed products.

With all-static electrical relay outputs working on 110 - 550V
ojen Supplies can also cater for the rough environment underground in South Africa where also strict safety requirements apply.

 Earth Wire Monitor


Transformer Protection Relay

Earth Wire Monitor
 in a 3-phase system

Transformer protection Relay
with NERM & Earth Fault monitor without a current transformer

Earth Path Tester

last update: 28 June 2013