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Siemens 5SL6404-7RC — 4-Pole MCB (DIN Rail)

Siemens 5SL6404-7RC SENTRON MCB, 4A 4-Pole C-Curve 7.5kA

MPN5SL6404-7RC
Active

Siemens SENTRON 5SL6404-7RC, 4A 4-pole miniature circuit breaker, C characteristic, 7.5 kA breaking capacity per EN 60898, 4 MW units.

Siemens 5SL6404-7RC datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL6404-7RC — Identification
ParameterValue
Brand nameSENTRON
Application suitabilityResidential buildings/infrastructure
5SL6404-7RC — Ratings
ParameterValue
Number of poles4
Pole configuration4P
Rated current (In), AC4 A
Rated voltage, AC (multi-phase)440 V
Rated voltage, AC (single-phase)250 V
Rated voltage, DC (max.)72 V
5SL6404-7RC — Protection
ParameterValue
Tripping characteristic (trip curve)C
Rated breaking capacity (Icn), per EN 608987.5 kA
Energy limitation classNo
Overvoltage categoryIII
Pollution degree2
Degree of protection (IP)IP20, with connected conductors
Touch protectionYes
5SL6404-7RC — Mechanical
ParameterValue
Width in modular units4
Width72 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Tightening torque, max.75 °C
Tightening torque, min.-40 °C
SealableYes
5SL6404-7RC — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
5SL6404-7RC — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)10 000

Product details

Siemens 5SL6404-7RC — 4A 4-Pole C-Curve MCB for Panel Protection

The Siemens 5SL6404-7RC is a SENTRON miniature circuit breaker rated 4 A at 415 V AC, 4-pole, with a C tripping characteristic and a breaking capacity of 7.5 kA.

The 4 A rating at 30 °C is the continuous current it carries without tripping; derate for higher ambient temperatures (the spec table shows ratings at 40, 45, 50, 55 °C on the single-pole sibling, and this 4-pole unit follows a similar thermal curve).

At 4 MW (72 mm wide), it takes up four 18 mm slots — plan your enclosure fill accordingly. Mounting position is unrestricted, which helps in tight enclosures where vertical or horizontal rail orientation is forced.

Frequently asked questions

Will 5SL6404-7RC drop into a panel specified around 5SL4120-7CC without rewiring?

No — the 5SL6404-7RC is a 4-pole unit (72 mm wide, 4 MW), while the 5SL4120-7CC is a single-pole unit (18 mm wide, 1 MW). The footprint is four times wider, so it will not fit the same DIN-rail position without re-spacing the entire row. The wiring also differs: the 4-pole needs, L2, L3, and neutral connections; the single-pole only needs one phase. A panel built around the single-pole unit would require significant rework to accommodate this 4-pole breaker.

MPN
5SL6404-7RC