SENTRON 5SP4 series, miniature circuit breaker, 4-pole, D-curve, 50 A, 10 kA (EN 60898) / 20 kA (IEC 60947-2), 70 mm installation depth, tunnel terminals top and bottom.
| Parameter | Value |
|---|---|
| Product designation | Miniature circuit breaker |
| Brand name | SENTRON |
| Parameter | Value |
|---|---|
| Number of poles | 4 |
| Parameter | Value |
|---|---|
| Tripping characteristic class | D |
| Parameter | Value |
|---|---|
| Installation depth | 70 mm |
| Parameter | Value |
|---|---|
| Tunnel terminals top | Yes |
| Design of the product | 5SP Miniature circuit breakers |
| Number of poles (Note) | 2P |
| Tunnel terminals bottom | Yes |
| Circuit-breaker (Design) | 5SP4 |
| Acc. to EN 60898 / rated value | 10 kA |
| Acc. to IEC 60947-2 / rated value | 20 kA |
The higher IEC figure means this part can be applied in industrial panels where fault current exceeds 10 kA, as long as the installation meets the conditions of IEC 60947-2. For a 50 A D-curve breaker, 20 kA at 400 V provides solid selectivity headroom downstream of a larger moulded-case or air breaker.
10 kA per EN 60898 and 20 kA per IEC 60947-2. The IEC rating qualifies it for industrial panels with higher prospective fault current.
Instantaneous trip between 10× and 20× rated current (500–1000 A for this 50 A unit). Designed for loads with high inrush, such as motor starters, transformers, or discharge lighting.
Sourced to order against an RFQ through our distribution channel. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.
Both have 70 mm installation depth, but the 5SP4450-8 is a 4-pole device versus the 5SL4363-7's 3-pole, so it occupies one additional modular width. The tunnel terminal layout is similar; verify DIN-rail space and conductor routing before substitution.