Rated for 40 A continuous, the D-curve means the magnetic trip is set to 10–20 times In, so it handles the inrush from motor starters, transformers, or discharge lamps without nuisance tripping. Three poles give you simultaneous switching of all phases in a 3-phase circuit.

S203M-D40 ABB S200M DIN Rail MCB, 40A D-Curve 3-Pole
MPNS203M-D40
ABB S200M series, S203M-D40, 3-pole DIN rail miniature circuit breaker, 40 A D-curve, current lifecycle stage.
$86.36Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Weight | 0.17 kgs |
Product details
Frequently asked questions
Where can I buy the S203M-D40 and how is it priced?
This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote.
What is the S203M-D40's weight?
The listed weight is 0.17 kgs.
MPN
S203M-D40