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Siemens 5SJ4211-8HG42 — 2-Pole MCB (DIN Rail)

Siemens 5SJ4211-8HG42 SENTRON MCB, 2-Pole 5 A, 36 mm Wide

MPN5SJ4211-8HG42
Active

Siemens SENTRON 5SJ4 series miniature circuit breaker, 2-pole, 5 A AC rated, 36 mm width, 70 mm depth, DIN rail mount, IP20/IP40.

$105.41Ref. price · indicative, final on quote
Siemens 5SJ4211-8HG42 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

5SJ4211-8HG42 — Identification
ParameterValue
Product designationMiniature circuit breakers
Brand nameSENTRON
Application environmentMechanical engineering / industry
5SJ4211-8HG42 — Electrical
ParameterValue
Number of poles2
Supply voltage at AC rated value400 V
5SJ4211-8HG42 — Protection
ParameterValue
Tripping characteristic classD
Overvoltage category3
5SJ4211-8HG42 — Mechanical
ParameterValue
Modular width units2
Width36 mm
Height121 mm
Depth70 mm
Installation depth70 mm
Mounting positionany
Min.-40 °C
Max.75 °C
Protection degree (IP)IP20, with connected conductors, IP 40 in the handle range
5SJ4211-8HG42 — Environmental
ParameterValue
Pollution degree3
At 30 °C rated value5 A
5SJ4211-8HG42 — Specifications
ParameterValue
At AC rated value5 A
According to EN 60898 rated value10 kA

Product details

The 5SJ4211-8HG42 is a 2-pole miniature circuit breaker from the Siemens SENTRON 5SJ4 series, rated 5 A at both 30 °C and 40 °C ambient. That 5 A holds through 40 °C; above that it derates to 4.9 A at 45 °C, 4.8 A at 50 °C, 4.6 A at 55 °C, and 4.5 A at 60 °C (–). It snaps onto standard mounting rail in any position.

Deployment context

This breaker is suited for mechanical engineering and industrial panel applications. The IP20 rating on the body (IP40 in the handle area) is standard for enclosed panels; not a washdown part.

Frequently asked questions

Where can I buy 5SJ4211-8HG42 and get a price?

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

What are the key dimensions of 5SJ4211-8HG42?

Width 36 mm (2 modular units), depth 70 mm, height 121 mm. Installation depth matches the body depth at 70 mm.

Will 5SJ4211-8HG42 drop into a panel specified around 5SY4106-7CV?

Both are 2-pole, 36 mm wide DIN-rail MCBs from Siemens, so the mechanical footprint and mounting are the same. The 5SY series is a different thermal-magnetic curve family — verify the trip characteristic and interrupting rating for your specific coordination study before substituting.

What compliance documentation does Siemens provide for this breaker?

The product is designed to EN 61346-2 and IEC 81346-2 function designations. It carries the SENTRON brand and is classified as a miniature circuit breaker per the manufacturer. For specific RoHS, REACH, or UL documentation, request the current manufacturer declarations at quote time.

MPN
5SJ4211-8HG42