The Siemens 5SY5240-6CC12 is a 2-pole miniature circuit breaker (MCB) from the 5SY5 series, rated for 440 V DC with a 10 kA breaking capacity and a B40 tripping characteristic. That B40 curve means it trips instantaneously between 3 and 5 times rated current — 120 to 200 A — making it a standard choice for protecting DC circuits against short circuits and overloads in control panels and distribution boards.
Siemens 5SY5240-6CC12 MCB, 440V DC, 10kA, 2P B40
MPN5SY5240-6CC12
Siemens 5SY5 series, MCB, 440V DC, 10kA, 2-pole, B40 characteristic, order code 5SY5240-6CC12.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Product details
Frequently asked questions
Where can I buy 5SY5240-6CC12 and get a price?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
What does the description MCB 5SY5 CRH 440V DC 10KA 2P B40 mean?
It is a 2-pole miniature circuit breaker from the 5SY5 series, rated for 440 V DC, with a 10 kA breaking capacity and a B40 tripping characteristic.
MPN
5SY5240-6CC12