Siemens 5SJ4132-8HG42 — 1-Pole DIN Rail MCB
Similar catalog parts
The table below presents the primary part alongside two in-catalog comparison rows at the highest similarity scores. These are parametric peers for screening only; none constitute OEM-approved interchange.
| Parameter | 5SJ4132-8HG42 (seed) | 5SJ41328HG41 | 5SJ4132-8HG40 |
|---|---|---|---|
| Current Rating | 32 A | 32 A | 32 A |
| Number of Poles | 1 | 1 | 1 |
| Mounting Type | DIN Rail | DIN Rail | DIN Rail |
| Actuator Type | Lever | Lever | Lever |
| Illumination | None | None | None |
| Approval Agency | CCC, CE, EAC, UL489 | CCC, CE, EAC, UL489 | CCC, CE, EAC, UL489 |
| Encapsulation | Box | Box | Box |
| Package | Box | Box | Box |
| RoHS | Non-compliant | Non-compliant | Non-compliant |
| Product Status | Active | Active | Active |
| Similarity | — | 1.0 | 1.0 |
5SJ41328HG41 shares the same 11-character MPN prefix and the full set of recorded electrical and mechanical parameters. The sole difference lies in the suffix digit, which affects voltage class designation in Siemens ordering logic.
5SJ4132-8HG40 matches the seed on all supplied catalog fields including the same D-trip characteristic and 10 kA interrupting rating implied by the suffix. The 240 V voltage class distinguishes it from the seed's 277 V designation.
A third peer at similarity 0.88 — 5SJ4132-7HG42 — carries the C-trip magnetic release profile instead of the D-trip in the seed. This changes the instantaneous trip band; selection depends on the downstream load inrush profile.
Key parameters
| Parameter | Value |
|---|---|
| Brand | Siemens |
| Series | 5SJ4 |
| Current Rating | 32 A |
| Number of Poles | 1 |
| Mounting | DIN Rail |
| Actuator | Lever (no illumination) |
| Approvals | CCC, CE, EAC, UL489 |
| Encapsulation / Package | Box |
| RoHS Status | Non-compliant |
| Product Status | Active |
The 5SJ4 series uses a modular DIN rail housing with lever-type manual actuation. Single-pole construction is typical for branch circuit protection in 230/277 V systems where UL489 listing is required. The lever actuator provides local manual isolation; no auxiliary contacts or shunt trip modules are cataloged in the records.
Catalog position notes
The 5SJ4 family covers IEC 60898 and UL489 applications across residential, commercial, and light-industrial branch circuits. The D-trip (4–8× Ir) is suited to mixed resistive-inductive loads such as motor feeders with moderate starting currents; the C-trip variant (5–10× Ir) targets higher inrush circuits like lighting banks. Both profiles fall within the same physical package, allowing panel designers to stock a single DIN rail pitch for multiple trip settings by current rating.
FAQ
What does the D-trip designation mean for 5SJ4132-8HG42? The D-trip curve corresponds to a magnetic release set at approximately 4–8× the 32 A thermal rating. This targets circuits with moderate inrush currents, such as small motor loads or transformer-fed branches, where a standard C-curve would risk nuisance tripping on startup.
Can 5SJ41328HG41 replace 5SJ4132-8HG42 in a UL489 installation? Both parts share identical approval agencies (CCC, CE, EAC, UL489), current rating, pole count, and mounting type. Voltage class differs (240 V vs 277 V), so replacement requires confirming that the 240 V rating meets the system's maximum operating voltage before substitution.
What mounting preparation is needed for 5SJ4132-8HG42? The part mounts directly on a standard 35 mm DIN rail. No additional enclosure or IP rating is specified in the catalog record; suitability for the intended environment should be verified against the panel's design requirements.