Complaint
DC load Isolator Switch with IEC standard
Available from 160A-250A-630A(DC20) in 4P version, acting as a load break switches for DC current.
Especially indicated for installations for photovoltaic energy generators, which require a safe disconnection. Standard handle is supplied pad lockable in position "OFF" for maintenance. Bridging links available for series connections.
Also available under request.
Rated operational category
DC21/DC22 following IEC 60947-3
DC21: Resistive loads(moderate overloads included)
DC22:Resistive and reactive loads(inductive or capacitive)
Relevant characteristics for photovoltaic installations
Ui(V) rated insulation voltage (off load) I = 0A (equivalent to category of utilization DC20).
Uoc(V) Open circuit voltage of the photovoltaic system.
Uef(V) photovoltaic installation functioning voltage on load
Ief(A)Installation working current under load.
Icf(A) Short-circuit current of the photovoltaic installation.
In certain places of Pv Systems, reative component must be considered(cables, inverter, etc.).
The sizing of the switch must be done considering open circuit voltage as maximum operation voltage.
It necessary to comply with UI>Uoc. We recommend to set UI between 10 and 15% over Uoc. Ue≥Uef Ie≥Ief Ie≥Icf
Amps | Interruptor O-I 4P On-Off switch type | Direct handle
| Shaft Extensions |
160A | SGL-DC-160/4P | Black | handle same the direct one |
250A | SGL-DC-250/4P | Black | handle same the direct one |
630A | SGL-DC-630/4P | Black | handle same the direct one |
| ACCORDING WITH STANDARD IEC-EN-UNE 60947-1 & 60947-3 | |||||||||||
| DC load switch datas | A | 160 | 250 | 630 | |||||||
| Rated thermalcurrent | Ith | In ambient at | 40C | A | 160 | 250 | 630 | ||||
| 50C | A | 160 | 250 | 600 | |||||||
| Rated insulation voltage AC20/DC20 | Ui | 50Hz,1min | V | 1000 | 1000 | 1000 | |||||
| Rated dielectric strength | V | 4000 | 5000 | 5000 | |||||||
| Rated impulse withstand voltage | Uimp | KV | 8 | 8 | 12 | ||||||
| DC rated operational current | Ie | 48V | A | DC23A 160 | DC23A 250 | DC23A 630 | |||||
| 110V | A | DC23A 160 | DC23A 250 | DC23A 630 | |||||||
| 230V | A | DC23A 125 | DC23A 250 | DC23A 630 | |||||||
| 400V | A | DC22A 50 | DC23A 200 | DC23A 500 | |||||||
| 250V | A | DC21B 85 | DC23A 200 | DC23A 500 | |||||||
| 600V | A | DC21B 65 | DC22A 190 | DC23A 300 | |||||||
| 750V | A | DC21B 55 | DC22A 185 | DC22A 285 | |||||||
| 800V | A | DC21B 50 | DC22A 175 | DC22A 270 | |||||||
| 850V | A | DC21B 45 | DC22A 175 | DC22A 270 | |||||||
| 900V | A | DC21B 40 | DC22A 125 | DC22A 200 | |||||||
| Rated making and breaking capacity | A | DC21 900V 55 | DC22 900V 125 | DC22 900V 200 | |||||||
| Short-circuit behavior | |||||||||||
| Short-circuit making capacity(peak value) | Icm | KA(pico) | 10 | 14 | 26 | ||||||
| Short0time withstand current(1 sec.) | Icw | KA rms | 6 | 10 | 16 | ||||||
| Conditions short-circuit current(ms value) | KA rms | 100 | 100 | 100 | |||||||
| Maximum cut-off current(peak value) | KA(pico) | 20 | 33 | 39 | |||||||
| Maximum power dissipation | A2s(*103) | 198 | 1000 | 1600 | |||||||
| Min.number of mechanical operations | Ciclos | 30000 | 20000 | 10000 | |||||||
| Min.number of electrical operations | Ciclos | DC21B 750V 300 | DC22A 900V 1000 | DC22A 900V 1000 | |||||||
Other our product series:
| Manual transfer switch | 1A~1600A, 3P/4P. |
| Automatic Transfer switch | 1A~3200A, 2P/3P/4P. |
| Metal power distribution box | Metal box, size can color can be customized. |
| Plstic box | Different ways, competitive price, welcome to contact |
| Surge protector | B,C,D Class, AC, DC type you can choose. Different types and discharge current you choose. |
| Power supply | Hot used in Gepenerator system, 120W 12/24V. And other types |
| Current transformer | Different size you can choose, quality guarantee, hot used in Generator cabinets. |
| Push button | Metal or plastic, different types for power cabinet. |
