Isolation Switches
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Kraus & Naimer DC Isolation Switches Kraus & Naimer AC Isolation Switches Santon Silios D DC Isolators Santon Combined AC & DC IsolatorDC & AC switches for isolating generation & loads.
DC Isolators
These are used between high voltage DC PV arrays and grid-connect inverters. They are located adjacent to the inverter and are required to provide a means of manually isolating the entire PV array during system installation or any subsequent maintenance. The switch must be rated for system voltage (1.15 x string open circuit voltage Voc) and current (1.25 x string short circuit current Isc).
AC Isolators
These are required to provide a means of manually isolating the AC supply to a grid-connect inverter. Two AC isolation switches may need to be provided between the inverter and the point of connection to the supply. One adjacent to the inverter and one adjacent to the consumer unit (Only one is needed if in the same room). The one adjacent to the consumer unit must be readily accessible and capable of being locked in the off position only. Switches must be double pole and suitably labelled.
Kraus & Naimer DC Isolation Switches
Cost effective switches with a simple easy to install design.
| Product Code | Description | Retail Price (ex VAT) |
|---|---|---|
| PV-SW20/650V | 2 pole DC isolator 20A @ 650VDC, 25A @ 450VDC | £27.65 |
| PV-SW20/1000V | 2 pole DC isolator 20A @ 1000VDC, 30A @ 660V, 50A @ 375V | £35.12 |
| PV-SW25/600V | 2 pole DC isolator 25A @ 600VDC, 12A @ 1000VDC | £31.49 |
| PV-SW25/800V | 2 pole DC isolator 25A @ 800VDC | £65.49 |
| PV-SW32/800V | 2 pole DC isolator 40A@800VDC 28A@1000VDC | £77.57 |
| PV-SW50/750V | 2 pole DC isolator 50A @ 750VDC, 40A @ 1000VDC | £68.27 |
| PV-SW-2-20/660V | 4 pole (2 string) DC isolator 20A @ 660VDC, 12A @ 800VDC | £39.74 |
| PV-SW-2-20/1000V | 4 pole (2 string) DC isolator 20A @ 1000VDC, 30A @ 750VDC | £65.86 |
Kraus & Naimer AC Isolation Switches
Three and four pole (for three phase) single throw switches lockable in the off position only, mounted in enclosure. Rated: 230/400 Vac.
| Product Code | Description | Retail Price (ex VAT) |
|---|---|---|
| AC-SWI | Single phase 25A AC isolator switch in enclosure | £23.02 |
| AC-SW2 | Single phase 32A AC isolator switch in enclosure | £26.05 |
| AC-SW3 | Three phase 25A AC isolator switch in enclosure | £26.86 |
| AC-SW4 | Single phase 40A AC isolator switch in enclosure | £36.22 |
| AC-SW5 | Three phase 40A AC isolator switch in enclosure | £41.89 |
| AC-SW7 | Three phase 80A AC isolator switch in enclosure | £77.76 |
| AC-SW8 | Three phase 4 pole 100A AC isolator switch in enclosure | £93.46 |
Santon Silios D DC Isolators
The Santon Silios D range of true DC isolators.
Switch
- Proven Santon 'Snap-action' mechanism
- Reliable X-type switch
- Switch disconnection within 3ms
- Self cleaning blade wiping contacts
- Available in 2 pole and 4 pole
- Maximum cable size 4mm and 6mm
- IEC 60947 certified
Enclosure
- UV resistant
- IP65
- Black padlockable knob
- Lid only removable in the ‘OFF’ position
- M16 knock outs
- Easy terminal access
| Product Code | Description | Retail Price (ex VAT) |
|---|---|---|
| PV-SW25/750V | Santon Silios 2 pole DC isolator 25A @ 750VDC, 16A @ 1000VDC | £27.10 |
Santon Combined AC & DC Isolator
Save space, installation time and money with this combined AC and DC isolator. 1 string and 2 string options available.
- Multi Contact Type 4 connectors (MC4) for simple, safe solar and inverter connection
- Can only be switched in the correct order for safer operation (On: DC then AC; Off: AC then DC)
- Integrated warning so no need to labels
- Lockable in the off position only
| Product Code | Description | Retail Price (ex VAT) |
|---|---|---|
| DSS-2DA | 2 pole, 25A 600V DC and 20A AC Isolator(D) | £50.00 |
| DSS-4DA | 4 pole 25A 650V DC switch (two strings) 2 pole 20A AC switch | £80.69 |
