What this MCB does and where it fits
The Siemens 5SL4140-8CC is a 1-pole miniature circuit breaker with a D tripping characteristic, rated 40 A with a 10 kA breaking capacity at 230/400 V.
RoHS compliant since 01 June 2013.
Siemens 5SL4140-8CC Miniature Circuit Breaker, 1-Pole D 40A
MPN5SL4140-8CC
Active
Siemens 5SL4140-8CC, 1-pole D-curve miniature circuit breaker, 40 A, 10 kA breaking capacity at 230/400 V AC.
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Group code | P310 |
| Product group | 3824 |
| Product class | B: return restricted, please contact your Siemens partner/contact |
| Series | Basic Devices |
| Export control regulations | AL : N / ECCN : N |
| Compliance with the substance restrictions according to RoHS directive | Since: 01-06-13 |
Product details
Frequently asked questions
Where can I buy the 5SL4140-8CC and get a price?
We source this active MCB to order against an RFQ. Submit a request and we'll confirm current availability and pricing at quote time.
What does the D-curve mean on this 40A breaker?
The D characteristic trips between 10x and 20x rated current (400–800 A for this 40 A unit), which handles the high inrush of motor starters, transformers, and discharge lighting without nuisance tripping.
MPN
5SL4140-8CC