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Siemens 5SL6263-7BB — 2-Pole MCB (DIN Rail)

Siemens SENTRON 5SL6263-7BB MCB, 2-pole C-curve 63 A 400 V

MPN5SL6263-7BB

Siemens SENTRON 5SL6 series, 2-pole miniature circuit breaker, C characteristic, 63 A rated current, 400 V AC, 6 kA breaking capacity (EN 60898), 2 modular width units, IP20.

Siemens 5SL6263-7BB datasheet (PDF)
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

5SL6263-7BB — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentResidential buildings/infrastructure
5SL6263-7BB — Electrical
ParameterValue
Number of poles2
5SL6263-7BB — Protection
ParameterValue
Tripping characteristic classC
Overvoltage category3
5SL6263-7BB — Mechanical
ParameterValue
Modular width units2
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Min.-40 °C
Max.75 °C
Protection degree (IP)IP20, with connected conductors
5SL6263-7BB — Environmental
ParameterValue
Pollution degree2
5SL6263-7BB — Specifications
ParameterValue
Energy Limitation Class3

Product details

Panel fit and protection profile

At 63 A, this breaker feeds a sub-distribution board or a high-current fixed load. The 6 kA breaking capacity under EN 60898 is the domestic/residential rating; the same 6 kA under IEC 60947-2 confirms it also meets the industrial standard for the same fault level, giving you dual-certification coverage. That 440 V ceiling allows use on 400/415 V three-phase systems where the line-to-line voltage stays under the maximum. For DC applications the breaker is rated at 72 V maximum — not a primary DC device, but usable on low-voltage DC control circuits within that limit.

Frequently asked questions

Will 5SL6263-7BB drop into a panel specified around 5SL3640-7MB without rewiring?

Both are 2-pole SENTRON 5SL6 breakers on the same DIN-rail footprint, so the mechanical fit is identical. The difference is rating: the 5SL3640-7MB is a 40 A B-curve device; the 5SL6263-7BB is a 63 A C-curve. If the panel bus and downstream conductors are sized for 63 A and the coordination study allows a C-curve, it is a direct swap. If the original design assumed B-curve selectivity, verify coordination before substituting.

Where can I buy 5SL6263-7BB and what is the lead time?

Sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm lead-time commitment.

What compliance documentation does Siemens provide for 5SL6263-7BB?

The breaker is certified to EN 60898 and IEC 60947-2, covering the essential safety and performance standards for European and international installations. The construction is halogen-free and silicon-free, which supports environmental compliance requirements in controlled environments.

MPN
5SL6263-7BB