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ABB S803C-K10 — 3-Pole MCB (DIN Rail)

S803C-K10 MCB 3P K 10A, 15 kA AC / 10 kA DC

MPNS803C-K10

ABB S800C series, S803C-K10, 3-pole miniature circuit breaker, trip curve K, 10 A, 230 VAC, 15 kA interrupting rating AC, 10 kA DC, DIN rail mount.

ABB S803C-K10 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

S803C-K10 — Identification
ParameterValue
Number of poles3
S803C-K10 — Electrical
ParameterValue
Voltage (AC)230
Current (A)10
S803C-K10 — Protection
ParameterValue
Interrupting rating (AC)15 kA
S803C-K10 — Mechanical
ParameterValue
Mounting typeDIN Rail
S803C-K10 — Other specifications
ParameterValue
TypeTrip Curve K
Interrupt rating DC10 kA

Product details

S803C-K10 — 3-pole K-curve MCB for inductive and motor loads

The 15 kA interrupting rating at 230 VAC and 10 kA DC give it headroom for industrial panel fault levels; the 10 kA DC rating is notably useful for DC link or battery-backed circuits where standard AC-only MCBs derate sharply. Mounts on standard DIN rail, occupying three module widths. The S800C family uses a compact, high-breaking-capacity design that coordinates well with upstream S800C or S800U selectives in a distribution board. For a sourcing decision: the 10 A K-curve is a common BOM line for motor control panels feeding contactor coils or small drives — confirm the load's inrush profile against the K-curve magnetic trip threshold (typically 8–12× In) before specifying.

Frequently asked questions

What is S803C-K10's interrupting rating?

The S803C-K10 is rated 15 kA interrupting capacity at 230 VAC and 10 kA at DC. These figures are the maximum fault current the breaker can safely interrupt without welding or arc flash-through.

What does trip curve K mean on this breaker?

Curve K on the S803C-K10 means the magnetic trip operates at 8 to 12 times the rated current (80–120 A for this 10 A unit). This is higher than a B-curve (3–5× In) and lower than a D-curve (10–20× In), making it suitable for loads with moderate inrush such as small motors, transformers, and solenoid banks.

Where can I buy S803C-K10 and how is it quoted?

The S803C-K10 is sourced to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead-time commitment.

MPN
S803C-K10