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Siemens 5SL3304-7 — 3-Pole MCB (DIN Rail)

Siemens 5SL3304-7 SENTRON MCB, 3P C-4A 4.5kA, 400V AC

MPN5SL3304-7

Siemens SENTRON 5SL3304-7 miniature circuit breaker, 3-pole, C-curve, 4 A rated, 4.5 kA breaking capacity per IEC 60898, 400 V AC, 3 modular units (54 mm).

Siemens 5SL3304-7 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL3304-7 — Identification
ParameterValue
Brand nameSENTRON
Number of poles3
Suitability for operationResidential buildings/infrastructure
5SL3304-7 — Protection
ParameterValue
Tripping characteristic (curve)C
Breaking capacity per EN 608984.5 kA
Breaking capacity per IEC 60947-24.5 kA
Overvoltage categoryIII
IP protection classIP20, with connected conductors
Energy limitation class3
Pollution degree2
5SL3304-7 — Electrical
ParameterValue
Rated current (AC)4 A
Rated voltage (AC, multi-phase)440 V
5SL3304-7 — Mechanical
ParameterValue
Modular width units3
Mounting positionany
Width54 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Terminal tightening torque, max.75 °C
Terminal tightening torque, min.-40 °C
SealableYes
5SL3304-7 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of surrounding temperaturePeriodically +55°C, max. 95% humidity

Product details

Panel-builder commissioning notes

Rated breaking capacity is 4.5 kA per both IEC 60898 and IEC 60947-2, which covers most low-fault-level distribution boards.

At 40 °C the continuous current derates to 3.81 A, at 45 °C to 3.68 A, and at 55 °C to 3.5 A.

It is sealable and features touch protection. The product is classified per IEC 81346-2 and DIN EN 61346-2 as function code F. The neutral conductor is not switched (3P, no switched neutral). Energy limitation class is 3, indicating a moderate let-through energy level for coordination with downstream devices.

Frequently asked questions

What is the breaking capacity of 5SL3304-7?

The breaking capacity is 4.5 kA per both IEC 60898 and IEC 60947-2 at 400 V AC.

Will 5SL3304-7 drop into a panel specified for 5SL3340-7CC without rewiring?

Both are 3-pole SENTRON MCBs in the same 3-module-width (54 mm) footprint with identical mounting dimensions (depth 76 mm, installation depth 70 mm), so physical swap is possible. However, 5SL3340-7CC is a 40 A C-curve — verify the load current and cable sizing before substitution; the 4 A rating of 5SL3304-7 is for a different branch circuit.

Where can I buy 5SL3304-7 and how is it quoted?

This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer.

MPN
5SL3304-7