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IEC60947-1、IEC60947-3
| Quantity: | |
|---|---|
Technical Data
| Model | ASKW3Z-G | ||||
Frame Current Inm(A) | 2500 | 4000 | |||
Standard | IEC/EN 60947-1、IEC/EN 60947-3 | ||||
Number of poles | 3P, 4P | ||||
| Full breaking time/closing time | ≤30ms/≤70ms | ||||
Rated working current In(A) | 630A-2500A | 1000A-4000A | |||
Rated impulse withstand voltage Uimp (KV) | 18 | ||||
| Rated working voltage Ue(V) | DC750V、DC1000V、DC1500V | ||||
Rated short-circuit breaking capacity Icm (KA)(Peak) | DC100V | 50 | 100 | ||
| DC1500V | 50 | 100 | |||
Rated short-time withstand current Icw (KA)(1s)(Effetive) | DC1000V | 50 | 100 | ||
DC1500V | 50 | 100 | |||
| Application Category | DC-22A、DC-23A、DC-PV2 | ||||
Auxiliary contact | 4-open and 4-close combination contacts 4-open and 4-close independent contacts 6-open and 6-close combination contacts | ||||
Copper busbar wiring method | 3P:A Type, B Type 4P:C Type, D Type | ||||
Installation | Fixed Type, Drowout Type | ||||
Operation performance (number of times) | Electrical life | DC1000V | 3000 | 1000 | |
| DC1500 | 2000 | 800 | |||
| Mechanical life | Maintenance | 1500 | 1000 | ||
| Maintenance-free | 2500 | 1500 | |||
Power consumption (ambient temperature +40°C)
| Model | Power consumption(W) | |
| Fixed Type | Drowout Type | |
| ASKW3Z-G(2500A) | 240 | 360 |
| ASKW3Z-G(4000A) | 600 | 800 |
Wiring Method
| A-type wiring: suitable for 3-pole series connection | B-type wiring: suitable for 3-pole series connection | C-type wiring: suitable for 4-pole series connection | D-type wiring: suitable for 4-pole series connection |
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Different power system/load wiring methods applicable to DC isolation switches
| Rated Working Voltage | Power System/Load Wiring Methods | ||
| Ungrounded system | Negative grounded system | Center point grounded system | |
| DC750V | C | A | B |
| DC1000V-DC1500V | C | D | C |
FAQ
DC Disconnect Switch (Isolator):
Used for electrical isolation during maintenance to ensure complete de-eningization.
No (or minimal) arc-extinguishing capability—only suitable for breaking no-load or negligible currents.
Vacuum Circuit Breaker (VCB):
Designed for switching and protection, capable of interrupting normal and fault currents (e.g., short circuits).
Equipped with advanced arc quenching (vacuum interrupter) and protective functions (overcurrent, short-circuit protection).
Disconnect Switch:
Typically no arc-extinguishing ability (or very limited). Never operate under load!
Vacuum Circuit Breaker:
Uses a vacuum interrupter to quickly extinguish high-current arcs, making it suitable for frequent load switching.
Disconnect Switch:
Simple design, visible contacts (clear isolation gap), mechanical interlocks to prevent misuse.
Vacuum Circuit Breaker:
More complex, with sealed vacuum interrupters and spring-operated mechanisms.
Contacts are not visible—status is indicated via position indicators.
Disconnect Switch:
Provides safe isolation in DC systems (e.g., solar PV, traction power).
Must be used after a breaker opens (never break load current alone).
Vacuum Circuit Breaker:
Used for frequent switching & protection (e.g., DC microgrids, battery storage, railways).
Can directly interrupt fault currents to protect downstream equipment.
Disconnect Switch: Installed upstream of the breaker for maintenance isolation.
Vacuum Circuit Breaker: Installed near the load as the primary protection device.
Disconnect Switch:
Never open under load—always confirm the breaker is off first!
Vacuum Circuit Breaker:
Regular maintenance (check vacuum integrity, contact wear).