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Siemens 5SL6340-7 — 3-Pole MCB (DIN Rail)

Siemens 5SL6340-7 SENTRON MCB, 3P C 40A 6kA

MPN5SL6340-7
Active

Siemens SENTRON 5SL6340-7 miniature circuit breaker, 3-pole, C-curve, 40 A rated current, 6 kA breaking capacity per IEC/EN 60898, 400 V AC, 3 modular width units.

Siemens 5SL6340-7 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SL6340-7 — Identification
ParameterValue
Brand nameSENTRON
Number of poles3
Pole configuration3P
Suitability for operationResidential buildings/infrastructure
5SL6340-7 — Protection
ParameterValue
Tripping characteristic (curve)C
Breaking capacity per EN 608986 kA
Breaking capacity per IEC 60947-26 kA
Overvoltage categoryIII
IP protection classIP20, with connected conductors
Energy limitation class3
Pollution degree2
5SL6340-7 — Electrical
ParameterValue
Rated voltage (AC, multi-phase)440 V
Voltage type (AC/DC)AC
Supply frequency range50/60 Hz
Power loss per pole at rated current (AC, hot)3.3 W
Mechanical service life (operating cycles, typ.)10 000
5SL6340-7 — 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
Accepts supplementary devicesYes
5SL6340-7 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes

Product details

The Siemens 5SL6340-7 is a SENTRON miniature circuit breaker (MCB) rated 40 A, C-curve, 3-pole, with a 6 kA breaking capacity per both EN 60898 and IEC 60947-2. It operates on 400 V AC at 50/60 Hz and occupies 3 modular width units (54 mm) on a DIN rail.

Breaking capacity and voltage rating

Rated 6 kA under both EN 60898 and IEC 60947-2, this MCB safely interrupts fault currents up to 6 kA at 400 V AC. The multi-phase maximum operating voltage is 440 V AC, giving headroom for nominal 400 V three-phase systems. For DC applications, the maximum rated voltage is 72 V — suitable for control circuits but not for high-voltage DC bus protection.

Snap-on DIN rail mounting, any position. Dimensions: 90 mm height, 54 mm width (3 x 18 mm modular units), 76 mm depth, with 70 mm installation depth. Sealable (padlockable) handle for lockout/tagout compliance.

Halogen-free and silicon-free construction. Mechanical service life 10,000 operating cycles typical.

Frequently asked questions

Where can I buy 5SL6340-7?

The 5SL6340-7 is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time.

What is the closest functional alternative to 5SL6340-7?

The 5SL4363-7 is the closest functional peer — same 3-pole, C-curve, 40 A rating, same physical footprint (90 x 54 x 76 mm), same DIN-rail mounting. The key difference: 5SL4363-7 carries a 10 kA breaking capacity (vs. 6 kA on the 5SL6340-7) and dissipates 5 W per pole (vs. 3.3 W). If your panel requires 10 kA SCCR, the 5SL4363-7 is the direct upgrade; otherwise the 5SL6340-7 drops into the same panel without rewiring.

Will 5SL6340-7 drop into a panel specified around 5SL4363-7?

Yes, identical dimensions (90 x 54 x 76 mm), same 3-pole DIN-rail footprint, same 70 mm installation depth. No rewiring or panel modification needed. The only trade-off is the lower 6 kA breaking capacity — verify your available fault current before substituting.

What is the depth of 5SL6340-7?

76 mm overall depth, with 70 mm installation depth behind the panel face.

What compliance documentation is available for 5SL6340-7?

The MCB carries IEC/EN 60898 and IEC 60947-2 ratings. It is halogen-free and silicon-free. Standard documentation includes the manufacturer's declaration of conformity; specific RoHS/REACH/UL declarations should be requested at quote time as they are not listed in the base specification.

MPN
5SL6340-7