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Siemens 5SP4450-6 — 2-Pole MCB (DIN Rail)

SENTRON 5SP4450-6 Miniature Circuit Breaker, 4-Pole B 50A 10

MPN5SP4450-6

SENTRON 5SP4450-6 miniature circuit breaker, 4-pole, B-curve, 50 A, 10 kA per EN 60898, 20 kA per IEC 60947-2, 400 V AC, 70 mm installation depth.

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

Specifications

5SP4450-6 — Identification
ParameterValue
Product designationMiniature circuit breaker
Brand nameSENTRON
5SP4450-6 — Electrical
ParameterValue
Number of poles4
5SP4450-6 — Protection
ParameterValue
Tripping characteristic classB
5SP4450-6 — Mechanical
ParameterValue
Installation depth70 mm
5SP4450-6 — Other specifications
ParameterValue
Tunnel terminals topYes
Design of the product5SP Miniature circuit breakers
Number of poles (Note)2P
Tunnel terminals bottomYes
Circuit-breaker (Design)5SP4
Acc. to EN 60898 / rated value10 kA
Acc. to IEC 60947-2 / rated value20 kA

Product details

The 70 mm installation depth is standard for the SENTRON 5SP range, so it fits existing DIN-rail enclosures without panel modification.

Integration into the panel

The 4-pole design occupies four modular width units on a standard DIN rail. Both top and bottom tunnel terminals are present, accepting solid or stranded copper conductors. The 70 mm installation depth matches the SENTRON 5SP enclosure family, so the breaker sits flush with the distribution board cover. Supply cord position is any — no restriction on line or load side orientation.

Frequently asked questions

Where can I buy 5SP4450-6 and how do I 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.

What is the breaking capacity of 5SP4450-6?

10 kA per EN 60898 and 20 kA per IEC 60947-2, both at 400 V AC.

Will 5SP4450-6 drop into a panel specified around 5SP4292-7?

Both are 70 mm deep SENTRON 5SP miniature circuit breakers on DIN rail, so the mechanical fit is identical. The 5SP4292-7 is a 2-pole C-curve unit; the 5SP4450-6 is 4-pole B-curve. The wiring and pole count differ, so a direct swap without rewiring is only possible if the panel was originally wired for 4 poles.

MPN
5SP4450-6