The 'D' curve means it tolerates the inrush of motor and transformer loads, tripping magnetically between 10x and 20x rated current, so it's a natural fit for a panel feeding a pump or a compressor bank.
5SY4450-8CV MCB, 15 kA 400V 4P D50, Siemens 5SY4
MPN5SY4450-8CV
Siemens 5SY4 series MCB, 5SY4450-8CV, 4-pole D50, Icu=15 kA at 400 V, current lifecycle.
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
Where can I buy 5SY4450-8CV and how do I get a price?
The 5SY4450-8CV is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.
What is 5SY4450-8CV's breaking capacity?
The 5SY4450-8CV has a rated breaking capacity (Icu) of 15 kA at 400 V AC, making it suitable for high-fault-current industrial panels.
MPN
5SY4450-8CV