The S804C-K20 is a 4-pole miniature circuit breaker from ABB's S800C series, rated 20 A with a Trip Curve K characteristic. The 15 kA interrupting rating at 230 VAC (10 kA at 500 VDC) tells you it can safely clear a fault up to that level without welding contacts or cascading upstream — critical for panel coordination studies. DIN rail mounting means it clips directly onto standard 35 mm rail inside the enclosure.
S804C-K20 MCB S800C 4P K 20A, Trip Curve K, 15 kA
MPNS804C-K20
ABB S800C series, MCB, 4-pole, 20 A, Trip Curve K, 230 VAC / 500 VDC, 15 kA interrupting rating AC, DIN rail mount.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Amps | 20 |
| Type | Trip Curve K |
| Poles | 4 |
| Mounting | DIN Rail |
| Volts AC | 230 |
| Volts DC | 500 |
| Breaking capacity | 15 kA |
| Interrupt rating DC | 10 kA |
Product details
Frequently asked questions
Where can I buy S804C-K20 and how do I get a price?
S804C-K20 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
What is S804C-K20's listed amps (20) on this component line?
The rated current is 20 A, which governs the continuous load it can carry without tripping on thermal overload.
What is S804C-K20's listed type (Trip Curve K) on this component line?
Trip Curve K means the magnetic trip threshold is 8–12× rated current, suited for loads with moderate inrush like motors and transformers.
Will S804C-K20 drop into a panel that was specified around S804S-C16 without rewiring?
Both mount on DIN rail and share the same 4-pole form factor, so physical fit is identical. However, the S804S-C16 is rated 16 A with Trip Curve C and a 50 kA interrupting rating — the S804C-K20 is 20 A with Curve K and 15 kA. Verify the load current and fault level before substitution; the breaker's protection characteristic differs.
MPN
S804C-K20