AC and 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 ratings given 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 P.V. string input to a P.V. inverter.
DC 21B Ratings for Infrequent Switching
| 450V | 500V | 650V | 800V | 920V | 1000V | Product Code |
|---|---|---|---|---|---|---|
| 25A | 21A | 20A | 18A | 11A | KG20 T104/D-P003 KL51V | |
| 21A | 20A | KG20B T106/D-P003 KL11V | ||||
| 27A | 25A | KG32B T106/D-P003 KL11V |
£32.00
Kraus and Naimer DC Isolator - KG20 T104/D-P003 KL51V
Standard DC
Padlockable DC isolator suitable for almost all domestic PV arrays of up to 4kW.
£45
Kraus and Naimer DC Isolator - KG20B T106 D- P003 KL11V
21A 800V
DC isolator for circuits up to 21A at 800V or 20A at 1000V. Ideal for independent string switching. Can be padlocked in off position.
£56.00
Kraus and Naimer DC Isolator - KG32B T106/D-P003 KL11V
25A 1000V
Padlockable DC isolator for circuits up to 25A at 1000V. Ideal for large scale PV arrays.
2 models available
AC Isolators
£22
£15.00
Kraus and Naimer 20A AC Isolator
ABB 25A AC Isolator
20A AC
25A AC
AC isolator for circuits up to 20A. Can be padlocked in off position.
