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Siemens 5SL6363-7BB — Miniature Circuit Breakers (MCB)

Siemens 5SL6363-7BB SENTRON MCB, 63A C-Curve 3P 6kA

MPN5SL6363-7BB

Siemens SENTRON 5SL6363-7BB, miniature circuit breaker, 3-pole, C-curve, 63 A rated at 30 °C, 6 kA breaking capacity per IEC 60898 / IEC 60947-2, 400 V AC.

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

Specifications

5SL6363-7BB — Ratings
ParameterValue
Overvoltage categoryIII
5SL6363-7BB — Mechanical
ParameterValue
Width54 mm
Height90 mm
Depth76 mm

Product details

Temperature derating and real-world current

At 40 °C the breaker is rated 59.67 A, at 45 °C it drops to 57.96 A, and at 55 °C it's 54.29 A. If your panel runs warm — common in enclosed DIN-rail assemblies — size the load against the derated figure, not the 30 °C number. The 6 kA breaking capacity is the same under both IEC 60898 (household) and IEC 60947-2 (industrial) standards, so it qualifies for either classification without a coordination study change.

Snaps onto standard DIN rail, 3 modular-width units (54 mm wide). Sealable, halogen-free, silicon-free. Touch protection is built in.

Frequently asked questions

What is the breaking capacity of 5SL6363-7BB?

6 kA per both IEC 60898 and IEC 60947-2, at 400 V AC.

Will 5SL6363-7BB drop into a panel specified around 5SL6550-7BB without rewiring?

Both are 3-pole SENTRON MCBs on the same DIN-rail footprint, but the 5SL6550-7BB is a 50 A B-curve breaker. The 5SL6363-7BB is 63 A C-curve — same mechanical fit, different electrical rating and trip characteristic. No rewiring needed if the busbar and conductor sizing support 63 A.

Where can I buy 5SL6363-7BB?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
5SL6363-7BB