Railway MCB with D Characteristic
Application Fit
Designed for railway applications. The D curve holds through the magnetizing inrush of a 20 A transformer or the start-up surge of a motor-driven compressor.
Siemens 5SY4520-8CC11 Miniature Circuit Breaker, D Curve 20A Railway
MPN5SY4520-8CC11
Siemens 5SY4520-8CC11 miniature circuit breaker, 230 V 10 kA, 1+N-pole, D characteristic, 20 A, for railway applications.
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
Product details
Frequently asked questions
What is the interrupting rating of the 5SY4520-8CC11?
It is rated for 230 V with a 10 kA interrupting capacity.
What does the D characteristic mean on this breaker?
The D tripping curve allows for high inrush currents, making it suitable for inductive loads like transformers and motors in railway auxiliary circuits.
MPN
5SY4520-8CC11