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Siemens 5SJ6406-6 — 4-Pole MCB (DIN Rail)

Siemens SENTRON 5SJ6406-6 MCB, 4-Pole, B Curve, 6 A, 6 kA

MPN5SJ6406-6

Siemens SENTRON 5SJ6, miniature circuit breaker, 4-pole, B characteristic, 6 A rated current, 6 kA breaking capacity, 400 V AC, 70 mm depth.

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

Specifications

5SJ6406-6 — Identification
ParameterValue
Type / order code5SJ6
Brand nameSENTRON
5SJ6406-6 — Ratings
ParameterValue
Number of poles4
Pole configuration4
Rated current (In), AC6 A
Rated voltage, DC (max.)60 V
Voltage typeAC/DC
Rated frequency50 Hz
5SJ6406-6 — Protection
ParameterValue
Tripping characteristic (trip curve)B
Rated breaking capacity (Icn), per EN 608986 kA
Rated breaking capacity, per IEC 60947-26 kA
Overvoltage category3
Degree of protection (IP)IP20, with connected conductors
Touch protectionYes
5SJ6406-6 — Mechanical
ParameterValue
Width in modular units4
Installation depth70 mm
Mounting positionany
Tightening torque, max.75 °C
Tightening torque, min.-40 °C
SealableYes
5SJ6406-6 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of ambient temperature (derating)Periodically +55°C, max. 95% humidity
5SJ6406-6 — Performance
ParameterValue
Mechanical service life (switching cycles, typ.)20 000

Product details

The Siemens SENTRON 5SJ6406-6 is a 4-pole miniature circuit breaker (MCB) from the 5SJ6 series, rated at 6 A with a B tripping characteristic and a 6 kA breaking capacity per both EN 60898 and IEC 60947-2.

Occupies 4 width units (4 x 18 mm = 72 mm) on the DIN rail. The touch-protected terminals accept supply from any direction. Vibration resistance per IEC 60068-2-6: 50 m/s² at 25–150 Hz and 60 m/s² at 10–150 Hz — adequate for industrial panels near rotating machinery. Mechanical service life is 20,000 switching cycles typical. Ambient temperature influence is periodically +55 °C with max 95% humidity; storage range is -40 to +75 °C.

Frequently asked questions

What are the key ratings of the 5SJ6406-6?

It is a 4-pole B-curve MCB rated 6 A, 400 V AC, with a 6 kA breaking capacity per EN 60898 and IEC 60947-2. Insulation voltage is 440 V AC.

Can 5SJ6406-6 replace a 5SJ6463-7 without rewiring?

No — the 5SJ6463-7 is a 63 A C-curve MCB, while the 5SJ6406-6 is 6 A B-curve. Both are 4-pole, 70 mm depth, and share the same mechanical footprint, but the current rating and tripping characteristic are completely different. You cannot drop one in for the other without a full circuit redesign.

What is the storage temperature range for 5SJ6406-6?

Storage range is -40 °C to +75 °C. Operating ambient is -20 °C to +45 °C, with periodic excursions to +55 °C at 95% humidity.

Where can I buy the 5SJ6406-6?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
5SJ6406-6