AC and DC isolators

DC Isolators
These DC isolators from Kraus and Naimer are designed specifically for PV installations. With interlocked lids (the lid cannot be removed if the switch is in the 'on' position), padlockable switches, and IP66/67 rated enclosures, they are an excellent, safe choice - and for a quality switch from a European manufacturer, remarkably well priced.
The KGD40 can cope with up to 50A at 1000V and new permanent magnet technology in the contact body greatly reduce arcing time, improving safety standards. They are also non-polarity sensitive.
The ratings provided in the table below are in accordance with the requirements of IEC/EN 60947-3, utilization category DC-21B. Ratings in accordance with DC-21B are suitable for use in the selection of an isolator to isolate a PV string input to a PV inverter.
DC 21B Ratings
450V | 500V | 650V | 800V | 920V | 1000V | Product Code |
---|---|---|---|---|---|---|
25A | 21A | 20A | 18A | 11A | KG20 T104/D-P003 KL51V | |
25A | 23A | 15A | 12A | KG32 T104/D-P003 KL11V | ||
30A | 30A | KGD40 TD102/D-P003 KL11V | ||||
40A | 40A | 30A | 20A | 20A | KGD40 TD103/D-P003 KL11V | |
50A | 50A | 40A | 40A | 30A | 30A | KGD40 TD104/D-P003 KL11V |
50A | 40A | 40A | KGD40B TD106/D-P003 KL11V | |||
50A | 50A | 50A | KGD40B TD108/D-P003 KL11V |
AC Isolators
Traditional rotary-switch isolators also from Kraus and Naimer offer excellent value.
We also have larger isolators for the higher current three-phase installations.
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Projoy AC Iso
VIEWProjoy 20A 4Pole AC Isolator
€18.01
Small size saves installation space - IP66 rated -
AC Isolators
VIEWKraus and Naimer AC Isolator 20A 4 Pole NEW204P
€21.45
Kraus & Naimer Rotary AC isolator 20A, 4 Pole, IP66, can be padlocked in off position. -
Projoy DC Iso
VIEWProjoy 32A 4Pole DC Isolator
€32.31
IP66 box design, switch rotation operator with three lockable positions, to prevent misoperation -
DC Isolators
VIEWKraus and Naimer DC Isolator - KG32 T104 - 32A 2 Pole
€38.58
Padlockable DC isolator for circuits up to 12A at 1000V.