The Siemens 5SY4450-6CC11 is a miniature circuit breaker rated for 400 V with a 10 kA breaking capacity, 4-pole configuration, B-curve trip characteristic, and 50 A current rating, specifically designated for railway applications.
Siemens 5SY4450-6CC11 MCB 400V 10kA 4P B 50A Railway
MPN5SY4450-6CC11
Siemens 5SY4450-6CC11, miniature circuit breaker, 400 V 10 kA, 4-pole, B-curve, 50 A, 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 5SY4450-6CC11 used for?
It is a miniature circuit breaker for railway applications, rated 400 V 10 kA, 4-pole, B-curve, 50 A — used to protect auxiliary power circuits in rolling stock and wayside equipment.
Where can I buy 5SY4450-6CC11?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
MPN
5SY4450-6CC11