ABB S803S-K20, S803S series, miniature circuit breaker, 20 A, 3-pole, trip curve K, 50 kA interrupting capacity, DIN rail mount.
| Parameter | Value |
|---|---|
| Number of poles | 3 |
| Parameter | Value |
|---|---|
| Voltage (AC) | 230 |
| Current (A) | 20 |
| Parameter | Value |
|---|---|
| Interrupting rating (AC) | 50 kA |
| Parameter | Value |
|---|---|
| Mounting type | DIN Rail |
| Parameter | Value |
|---|---|
| Type | Trip Curve K |
The K curve provides a magnetic trip threshold of 10–14× In, making it suited for motor and transformer circuits where inrush current must pass without nuisance tripping. The interrupting rating of 50 kA at 400/690 VAC gives headroom for high-fault installations.
Rated operational voltage is 400/690 VAC at 50/60 Hz and 375 VDC. The thermal-magnetic trip mechanism handles overload protection via the thermal element and short-circuit protection via the electromechanical element.
The S803S-K20 has a 50 kA interrupting rating at 400/690 VAC, which provides high fault-current capacity for industrial panel coordination studies.
Trip curve K means the magnetic trip operates at 10–14 times the rated current (200–280 A for this 20 A breaker), designed to handle motor and transformer inrush without nuisance tripping.
The S803S-K20 is available to order through independent distribution. Submit an RFQ for current pricing and availability.