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ABB S283-K8W — Miniature Circuit Breakers (MCB)

ABB S283-K8W MCB 3P K8A 480VAC, current lifecycle

MPNS283-K8W

ABB S280 series MCB, 3-pole, K-curve, 8 A, 480 VAC, DIN-rail mount, order code S283-K8W.

StockContact for availability
Lead timeCall for availability wk
MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jul 2026

Product details

MCB for branch-circuit protection

The ABB S283-K8W is a 3-pole miniature circuit breaker from the S280 series, rated 8 A with a K-curve trip characteristic at 480 VAC. The K-curve (8–12× In magnetic trip) is specified for inductive loads such as motor and transformer circuits where high inrush currents are expected, avoiding nuisance trips on start-up while still providing short-circuit protection. This unit snaps onto a standard DIN rail in a distribution panel or control cabinet.

Frequently asked questions

Where can I buy the S283-K8W?

The S283-K8W is sourced and quoted to order against an RFQ through independent distribution; availability and pricing are confirmed at quote time.

What does the K-curve on the S283-K8W mean?

The K-curve trips magnetically at 8 to 12 times the rated current (8 A), making it suitable for circuits with inductive loads like motors and transformers that draw high inrush current on start-up.

MPN
S283-K8W