5SJ4125-7HG42
Siemens
The Siemens 5SJ4125-7HG42 is a 1-pole miniature circuit breaker with a 25A operational current rating and a C-trip characteristic. It offers a switching capacity of 10kA according to EN 60898.
| Category | |
| Manufacturer Name | |
| Actuator Type | |
| Approval Agency | |
| Current Rating (Amps) | |
| Depth | |
| Halogen Free | |
| Height | |
| Illumination | |
| Mounting Type | |
| Number of Poles | |
| Storage Temperature | |
| Supply Voltage | |
| Tape & Reel | |
| Voltage Rating | |
| Width |
This Siemens 5SJ4125-8HG42 is a 1-pole miniature circuit breaker from the 5SJ4 series, designed for branch circuit protection. It features a D-trip characteristic, making it suitable for high inrush loads, with a magnetic trip point typically 10 to 20 times the MCB rating.
The circuit breaker has a rated operational current of 25A at AC and a switching capacity of 10kA according to EN 60898 and 15kA according to IEC 60947-2. It operates with a supply voltage frequency of 50 Hz and has an insulation voltage of 440V AC. The device is designed for DIN rail mounting and has dimensions of 121 mm H x 18 mm W x 70 mm D.
Key electrical specifications include a maximum operating voltage of 277V AC according to UL 489 and CSA C22.2 No. 5-02, and 60V DC. It supports conductor cross-sections from 0.75 mm² to 25 mm² for finely stranded conductors with core end processing, with a maximum tightening torque of 3.5 N·m.
Environmental and compliance features include halogen-free, sealable, and silicon-free construction, with touch protection to EN50274. It is suitable for environment B regarding EMC. The mechanical service life is typically 10,000 switching cycles.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operational current rating for the Siemens 5SJ4125-8HG42 is 25A at AC.
The switching capacity is 10kA according to EN 60898 and 15kA according to IEC 60947-2.
This circuit breaker is designed for DIN rail mounting.
The tripping characteristic class is D.
The maximum AC operating voltage according to UL 489 and CSA C22.2 No. 5-02 is 277V.
The typical mechanical service life is 10,000 switching cycles.