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Siemens 5SY4104-6 — 1-Pole MCB (DIN Rail)

5SY4104-6 SENTRON MCB, 1P B-curve, 10 kA IEC, 35 kA IEC 6094

MPN5SY4104-6
Active

Siemens SENTRON 5SY4104-6, 1-pole miniature circuit breaker, B-curve, rated 10 kA per EN 60898-1 / 35 kA per IEC 60947-2, 5 kA per UL 1077, 18 mm wide, IP20.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SY4104-6 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Number of poles1
Pole design1P
Application suitabilityMechanical engineering / industry
5SY4104-6 — Electrical & Protection
ParameterValue
Tripping characteristic classB
Energy limitation class3
Overvoltage categoryIII
5SY4104-6 — Mounting & Connection
ParameterValue
Mounting positionany
Fastening methodQuick assembly system
Combined terminal, topYes
Combined terminal, bottomYes
Width18 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Modular width units1
Torque, min.-40 °C
Torque, max.75 °C
SealableYes
5SY4104-6 — Environmental
ParameterValue
IP protection classIP20, with connected conductors
Pollution degree3
Halogen-freeYes
Silicone-freeYes

Product details

Product identity and certification scope

It carries dual-standard certification to IEC / EN 60898-1 and IEC / EN 60947-2, plus UL 1077 / CSA C22.2 No. 235 — meaning it is accepted in European, UK, and North American installations under a single order code.

Breaking capacity — the real-world headroom

The 10 kA rating per EN 60898-1 covers the standard domestic and light-commercial fault level. At 60 V DC it still holds 15 kA per IEC 60947-2. For UL 1077 listings the rating is 5 kA — adequate for North American supplementary protection applications.

B-curve tripping and application fit

It is not intended for motor-starting duty (C or D curve would be specified for that). The 1-pole form factor at 18 mm width (1 MW) fits a standard DIN-rail enclosure, and the quick-assembly system allows tool-less snap-on mounting in any orientation.

Combined terminals at both top and bottom accept supply from any direction — no need to orient the breaker for top-feed only. IP20 protection applies with connected conductors; the terminals are finger-safe only when wired.

Frequently asked questions

What breaking capacity does 5SY4104-6 have at 400 V AC?

10 kA per EN 60898-1 and 35 kA per IEC 60947-2 at 400 V AC. The higher figure is the one that governs industrial panel coordination.

What certifications does 5SY4104-6 carry?

It is certified to IEC / EN 60898-1, IEC / EN 60947-2, and UL 1077 / CSA C22.2 No. 235 — covering European, UK, and North American installations.

Will 5SY4104-6 drop into a panel specified around 5SY4116-6CC?

Both are 1-pole SENTRON MCBs with the same 18 mm width and DIN-rail mounting. The 5SY4116-6CC is a C-curve variant; the 5SY4104-6 is B-curve. If the panel was designed for a C-curve breaker to handle motor or transformer inrush, substituting a B-curve may cause nuisance tripping. Mechanical fit is identical; electrical coordination must be verified.

Where can I buy 5SY4104-6?

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

What is the width of 5SY4104-6?

18 mm, which is 1 modular width (1 MW) on a standard DIN rail.

MPN
5SY4104-6