Joslyn's 1000 Series - DC Protectors

Designed to Meet Any Need

Joslyn DC protectors come in a wide variety of shapes and sizes. They are also available with kA ratings ranging from very low to quite large. Designed to meet the needs of any application where DC power is supplied over a bus/high capacity cabling or through the wall of a facility to an exterior DC load, these protectors prevent damage to rectifiers, power storage banks, DC powered load equipment and the input side of inverters.

Several popular configurations are shown below. Contact us for other configurations.

Model 1020 Series

Low Voltage DC and AC Surge Protector

For direct connection to power busses, load centers or equipment input/outputs. May be used on grounded (+ or -) or floating power systems, for DC or low voltage ac (up to 400 Hz).

Model 1035-20 24 Vdc
Model 1045-20 48 Vdc

Three mode protector module

For use on grounded or ungrounded systems, DC or AC (up to 400 Hz).

Model 1035-31 24 Vdc
Model 1045-30 48 Vdc

Single mode protector module

In normal use, these models are applied on grounded power systems (positive or negative) to be installed close to the service conductor ground bond. When connected across a pair of ungrounded conductors, they will provide differential protection but will be ineffective against common mode lightning surges. Modules can be used on DC or AC power systems (up to 400 Hz).