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Siemens 5SJ6320-6 — 3-Pole MCB (DIN Rail)

Siemens SENTRON 5SJ6320-6 MCB, 3-pole, B-curve, 20 A, 6 kA

MPN5SJ6320-6

Siemens SENTRON 5SJ6 series miniature circuit breaker, 3-pole, B-curve, 20 A, 6 kA breaking capacity per EN 60898, 400 V AC, 3 width units.

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

Specifications

5SJ6320-6 — Identification
ParameterValue
Design / model code5SJ6
Brand nameSENTRON
Number of poles3
5SJ6320-6 — Protection
ParameterValue
Tripping characteristic (curve)B
Breaking capacity per EN 608986 kA
Breaking capacity per IEC 60947-26 kA
Overvoltage category3
IP protection classIP20, with connected conductors
5SJ6320-6 — Electrical
ParameterValue
Rated frequency50 Hz
5SJ6320-6 — Mechanical
ParameterValue
Mounting positionany
Installation depth70 mm
SealableYes
5SJ6320-6 — Environmental
ParameterValue
Halogen-freeYes
Silicone-freeYes
Influence of surrounding temperaturePeriodically +55°C, max. 95% humidity

Product details

The 6 kA breaking capacity per EN 60898 (also rated 6 kA per IEC 60947-2) tells you it can safely interrupt a fault current up to 6,000 A at 400 V without welding contacts or cascading damage upstream. The 3-pole design (3 width units, 70 mm installation depth) fits standard DIN-rail enclosures.

Deployment context

The 70 mm installation depth fits flush in most 100 mm deep enclosures. Rated for ambient temperatures from -20 to +45 °C, with periodic excursions to +55 °C at up to 95% humidity — suitable for unconditioned electrical rooms and outdoor-rated cabinets within that range. Vibration resistance tested to 50 m/s² at 25 to 150 Hz and 60 m/s² at 10 to 150 Hz per IEC 60068-2-6, so it holds up on machine-mounted panels near rotating equipment.

Frequently asked questions

Where can I buy 5SJ6320-6 and how do I get a price?

The 5SJ6320-6 is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time, not listed here.

What is 5SJ6320-6's listed solid conductor range?

The solid conductor range is 0.75 to 25 mm². Stranded conductors also accept 0.75 to 25 mm².

MPN
5SJ6320-6