DC Isolator for Solar Photovoltaic (PV) Power System

Product discontinued


This DC switch disconnector (KFD25B) for solar photovoltaic (PV) power supply systems was specifically designed for the demands of the Australian market.

Available in totally insulated enclosures with red/yellow padlockable handle and with a degree of protection to IP 67, they can be installed in the most arduous of environments. The switch can be mounted vertically, horizontally, or sideways and will retain its IP67 protection rating.

The 25 Amp DC Isolator consists of 2 x 3 pole switches, each one capable of switching a maximum of 1200V DC.

General Data
According to EN 60947-3 respectively VDE 0660 Part 1, IEC60364-7-712:2002, AS NZS 5033
Touch protected terminals
Utilisation Category: DC-21B
Ambient Temperature: 50° C
Terminal Lugs finger-proof according to VDE 0660-514 and BGV A3, IP 20
Made in Germany
UV Resistant
Non Polarised, switchable under load

Maximum permissable conductor size
Flexible 4mm²
Flexible 6mm² with ferrule
Single core: 6mm²
Standard (Class 2): 6mm²

Plastic Enclosure, Protection IP67, totally insulated
Red handle and contrasting yellow escutcheon plate, OFF position lockable with padlocks

Ratings (view more)
Max current: 25A
1.2 Voc 2 pol: 1000V @ 25A
1.2 Voc on each side: 510V @ 25A
Insulation Voltage: 1500V

Weight: 0.45 Kilograms


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We install solar systems in Northern NSW and Southern QLD.

Gold Coast (from Coolangatta to Southport), Nerang and Hinterland (Beaudesert) and out West (Warwick, Stanthorpe, Killarney)

Northern NSW (Tweed Heads to Yamba, including Evans Head, Byron Bay and Ballina); the Far North Coast Hinterland (Grafton via Lismore to Murwillumbah) and out West (Casino to Tenterfield, including Drake and Tabulam, as well as Woodenbong and Bonalbo)

For larger system we also go up to Brisbane or down to Coffs Harbour and even Glen Innes. Other places by arrangement.