| Category | |
| Manufacturer Name | |
| Actuator Type | |
| Approval Agency | |
| Current Rating | |
| Current Rating (Amps) | |
| Depth | |
| Height | |
| Illumination | |
| Mounting Type | |
| Number of Poles | |
| Voltage Rating | |
| Width |
The Siemens 5SJ41187HG41 is a 1-pole miniature circuit breaker (MCB) from the 5SJ4 series. It is rated for 15A continuous current with a C-trip characteristic, making it suitable for protecting circuits with moderate inrush currents such as motor loads and lighting. The device offers a rated insulation voltage of 440V AC and a rated impulse withstand voltage of 4kV (overvoltage category 3, pollution degree 3).
Breaking capacity is 10kA per EN 60898 and 15kA per IEC 60947-2, with a UL 1077/CSA C22.2 No. 235 short-circuit breaking capacity of 14kA at AC. The MCB supports both AC and DC operation: maximum operating voltage is 240V AC (UL/CSA) and up to 125V DC for 2-channel configurations. Power loss per pole is 1.9W at rated current.
The unit mounts on a DIN rail and occupies 1 modular width (18mm). It accepts finely stranded conductors from 0.75 mm² to 25 mm² with a maximum tightening torque of 3.5 N·m. The housing provides IP20 protection (IP40 in the handle area) and is touch-protected, sealable, and silicone-free. Supplementary devices can be installed alongside.
The rated operating voltage is 400V AC. Maximum operating voltage per UL 489/CSA C22.2 No. 5-02 is 240V AC. For DC, maximum is 60V (single channel) or 125V (2-channel).
Breaking capacity is 10kA per EN 60898 and 15kA per IEC 60947-2. Under UL 1077/CSA C22.2 No. 235, the short-circuit breaking capacity is 14kA at AC.
The mechanical service life is 10,000 switching cycles (typical).
Finely stranded conductors with core end processing from 0.75 mm² to 25 mm² can be connected. Maximum tightening torque is 3.5 N·m.
Protection class is IP20 with connected conductors, and IP40 in the handle range.