Siemens 5SJ4118-7HG40 DIN Rail MCB
The 5SJ4118-7HG40 is a single-pole miniature circuit breaker in Siemens' 5SJ4 series, designed for branch protection in standard AC distribution boards.
Product specifications
| Parameter | Value |
|---|---|
| Poles | 1 |
| Voltage | 240 V |
| Current rating | 15 A |
| Mounting | DIN rail |
| Actuator | Lever |
| Illumination | None |
| Package | Bulk |
| RoHS compliance | Non-compliant |
| Product status | Active |
Approvals span CCC, CE, CSA, EAC, UL, and VDE. The device ships as a bulk item with no integral switching illumination.
Family position
The 5SJ4 prefix groups Siemens Q-Frame DIN rail breakers by physical format and termination type. Trailing digits encode trip characteristic (C = 5–10× In, D = 10–14× In), breaking capacity, and current rating. The suffix "-7HG40" indicates a C-curve 14 kA unit at 240 V.
Comparison with alternates
Readers must qualify the following items independently; similarity scores reflect parametric proximity, not verified interchangeability.
| MPN | Voltage | Current | Trip | Capacity | Similarity |
|---|---|---|---|---|---|
| 5SJ4118-7HG40 | 240 V | 15 A | C | 14 kA | — |
| 5SJ4118-7HG42 | 277 V | 15 A | C | 10 kA | 1.0 |
| 5SJ4118-8HG40 | 240 V | 15 A | C | 14 kA | 1.0 |
| 5SJ4118-6HG40 | 240 V | 15 A | C | 14 kA | 1.0 |
5SJ4118-7HG42 differs in voltage (277 V) and lower 10 kA breaking capacity. The 5SJ4118-8HG40 and 5SJ4118-6HG40 share the same primary rating but use different internal construction (trip digit variation) and differ in approval agency listings.
Current rating variants at 240 V / 14 kA
- 5SJ4111-7HG40 — 5 A, C-curve
- 5SJ4116-7HG40 — 16 A, C-curve
These share the same voltage and capacity class but serve lighter branch circuits.