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Siemens 5SJ6220-7FC — 2-Pole MCB (DIN Rail)

Siemens 5SJ6220-7FC SENTRON MCB, 2-pole C 20A 6kA

MPN5SJ6220-7FC

Siemens SENTRON 5SJ6220-7FC, miniature circuit breaker, 2-pole, C-curve, 20 A, 6 kA breaking capacity, 400 V AC.

Siemens 5SJ6220-7FC datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SJ6220-7FC — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
Application environmentResidential buildings/infrastructure
5SJ6220-7FC — Electrical
ParameterValue
Number of poles2
5SJ6220-7FC — Protection
ParameterValue
Tripping characteristic classC
Overvoltage categoryIII
5SJ6220-7FC — Mechanical
ParameterValue
Modular width units2
Width36 mm
Height90 mm
Depth76 mm
Installation depth70 mm
Mounting positionany
Min.-40 °C
Max.75 °C
Protection degree (IP)IP20, with connected conductors
5SJ6220-7FC — Environmental
ParameterValue
Pollution degree2

Product details

At 20 A it'll handle a 4 kW resistive load on a 230 V leg or a 3-phase motor drawing around 7.5 kW FLA. Temperature derating is baked in: 20 A at 30 °C ambient, dropping to 18.79 A at 40 °C and 18.4 A at 45 °C. That shallow depth matters when you're squeezing breakers into a compact enclosure with limited gutter space behind the rail.

Deployment context

Snap-on DIN-rail mounting for distribution boards, sub-panels, and meter cabinets in residential buildings and infrastructure. The sealable feature (padlockable toggle) lets you lock it in the OFF position for lockout/tagout on a branch circuit.

Frequently asked questions

What is the 5SJ6220-7FC used for?

It's a 2-pole miniature circuit breaker for overcurrent and short-circuit protection of branch circuits in residential and light commercial distribution boards, rated 20 A C-curve at 400 V AC with 6 kA breaking capacity.

Where can I buy the 5SJ6220-7FC?

This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

How does the 5SJ6220-7FC compare to the 5SJ6325-7RC?

The 5SJ6325-7RC is a 3-pole, 25 A, C-curve MCB in the same SENTRON family with the same 6 kA breaking capacity and 76 mm depth. It's physically wider at 54 mm (3 MW) versus 36 mm (2 MW) for the 5SJ6220-7FC, and it's rated 415 V AC instead of 400 V. If your panel was specced around the 3-pole version, the 2-pole 5SJ6220-7FC won't drop in without rewiring — you'd need a separate neutral bar and a different phase arrangement.

MPN
5SJ6220-7FC