The Siemens 5SL4140-0RC is a 40 A single-pole miniature circuit breaker with a Z characteristic and 10 kA breaking capacity. The Z curve trips between 2.5 and 5 times rated current, designed for semiconductor and control circuit protection where inrush is minimal but short-circuit discrimination matters.
Siemens 5SL4140-0RC MCB, 40A 1P Z-Characteristic 10kA
MPN5SL4140-0RC
Siemens SENTRON 5SL4 series, Miniature Circuit Breaker, 40A, 1-pole, Z characteristic, 10kA breaking capacity, order code 5SL4140-0RC.
Source DocumentedChannel stated on listing & quote
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Product details
Frequently asked questions
What does the Z characteristic mean on this MCB?
The Z characteristic trips between 2.5 and 5 times the 40 A rated current, making it suitable for protecting semiconductor devices and control circuits that have low inrush but require fast short-circuit clearing.
Where can I buy 5SL4140-0RC and get current pricing?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
MPN
5SL4140-0RC